./Ultimate.py --spec /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/properties/unreach-call.prp --file /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/mine-tutorial-ex4.6.i --full-output --architecture 64bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/mnt/thread-witnesses/replication/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /mnt/thread-witnesses/replication/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /mnt/thread-witnesses/replication/UAutomizer-linux/data -tc /mnt/thread-witnesses/replication/UAutomizer-linux/config/AutomizerReach.xml -i /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/mine-tutorial-ex4.6.i -s /mnt/thread-witnesses/replication/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /mnt/thread-witnesses/replication/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-2329fc7
[2023-01-31 08:39:11,374 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-01-31 08:39:11,376 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-01-31 08:39:11,414 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-01-31 08:39:11,416 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-01-31 08:39:11,422 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-01-31 08:39:11,439 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-01-31 08:39:11,442 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-01-31 08:39:11,444 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-01-31 08:39:11,448 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-01-31 08:39:11,449 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-01-31 08:39:11,451 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-01-31 08:39:11,451 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-01-31 08:39:11,454 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-01-31 08:39:11,456 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-01-31 08:39:11,457 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-01-31 08:39:11,458 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-01-31 08:39:11,459 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-01-31 08:39:11,460 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-01-31 08:39:11,464 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-01-31 08:39:11,465 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-01-31 08:39:11,466 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-01-31 08:39:11,467 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-01-31 08:39:11,468 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-01-31 08:39:11,469 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-01-31 08:39:11,470 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-01-31 08:39:11,470 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-01-31 08:39:11,476 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-01-31 08:39:11,476 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-01-31 08:39:11,479 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-01-31 08:39:11,479 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-01-31 08:39:11,480 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-01-31 08:39:11,481 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-01-31 08:39:11,481 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-01-31 08:39:11,482 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-01-31 08:39:11,482 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-01-31 08:39:11,483 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-01-31 08:39:11,483 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-01-31 08:39:11,483 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-01-31 08:39:11,484 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-01-31 08:39:11,495 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-01-31 08:39:11,496 INFO  L101        SettingsManager]: Beginning loading settings from /mnt/thread-witnesses/replication/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-01-31 08:39:11,538 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-01-31 08:39:11,538 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-01-31 08:39:11,539 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-01-31 08:39:11,539 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-01-31 08:39:11,540 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-01-31 08:39:11,540 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-01-31 08:39:11,540 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-01-31 08:39:11,541 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-01-31 08:39:11,541 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-01-31 08:39:11,541 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-01-31 08:39:11,542 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-01-31 08:39:11,542 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-01-31 08:39:11,542 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-01-31 08:39:11,542 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-01-31 08:39:11,542 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-01-31 08:39:11,543 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-01-31 08:39:11,543 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-01-31 08:39:11,543 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-01-31 08:39:11,543 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-01-31 08:39:11,543 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-01-31 08:39:11,544 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-01-31 08:39:11,544 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-31 08:39:11,544 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-01-31 08:39:11,544 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-01-31 08:39:11,545 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-01-31 08:39:11,545 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-01-31 08:39:11,545 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-01-31 08:39:11,545 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-01-31 08:39:11,545 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-01-31 08:39:11,546 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-01-31 08:39:11,546 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-01-31 08:39:11,546 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-01-31 08:39:11,547 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/mnt/thread-witnesses/replication/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /mnt/thread-witnesses/replication/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76
[2023-01-31 08:39:11,903 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-01-31 08:39:11,946 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-01-31 08:39:11,948 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-01-31 08:39:11,949 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-01-31 08:39:11,949 INFO  L275        PluginConnector]: CDTParser initialized
[2023-01-31 08:39:11,950 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/mine-tutorial-ex4.6.i
[2023-01-31 08:39:13,591 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-01-31 08:39:13,839 INFO  L351              CDTParser]: Found 1 translation units.
[2023-01-31 08:39:13,839 INFO  L172              CDTParser]: Scanning /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/mine-tutorial-ex4.6.i
[2023-01-31 08:39:13,846 INFO  L394              CDTParser]: About to delete temporary CDT project at /mnt/thread-witnesses/replication/UAutomizer-linux/data/45d0eb803/c9d9bc78337241e79ff93261be5308ff/FLAG935d9a413
[2023-01-31 08:39:13,859 INFO  L402              CDTParser]: Successfully deleted /mnt/thread-witnesses/replication/UAutomizer-linux/data/45d0eb803/c9d9bc78337241e79ff93261be5308ff
[2023-01-31 08:39:13,862 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-01-31 08:39:13,871 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-01-31 08:39:13,872 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-01-31 08:39:13,872 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-01-31 08:39:13,874 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-01-31 08:39:13,875 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:39:13" (1/1) ...
[2023-01-31 08:39:13,876 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748429be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:13, skipping insertion in model container
[2023-01-31 08:39:13,876 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:39:13" (1/1) ...
[2023-01-31 08:39:13,881 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-01-31 08:39:13,895 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-01-31 08:39:14,095 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/mine-tutorial-ex4.6.i[812,825]
[2023-01-31 08:39:14,130 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-01-31 08:39:14,152 INFO  L203         MainTranslator]: Completed pre-run
[2023-01-31 08:39:14,160 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/mine-tutorial-ex4.6.i[812,825]
[2023-01-31 08:39:14,162 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-01-31 08:39:14,171 INFO  L208         MainTranslator]: Completed translation
[2023-01-31 08:39:14,184 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14 WrapperNode
[2023-01-31 08:39:14,184 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-01-31 08:39:14,185 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-01-31 08:39:14,185 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-01-31 08:39:14,185 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2023-01-31 08:39:14,190 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,201 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,214 INFO  L138                Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22
[2023-01-31 08:39:14,214 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-01-31 08:39:14,223 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-01-31 08:39:14,224 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-01-31 08:39:14,224 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-01-31 08:39:14,230 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,231 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,232 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,232 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,242 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,250 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,253 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,254 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,255 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-01-31 08:39:14,256 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-01-31 08:39:14,256 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-01-31 08:39:14,257 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-01-31 08:39:14,259 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (1/1) ...
[2023-01-31 08:39:14,267 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-31 08:39:14,284 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:39:14,297 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-01-31 08:39:14,316 INFO  L327       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-01-31 08:39:14,351 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-01-31 08:39:14,351 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-01-31 08:39:14,352 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-01-31 08:39:14,352 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-01-31 08:39:14,352 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-01-31 08:39:14,352 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-01-31 08:39:14,420 INFO  L235             CfgBuilder]: Building ICFG
[2023-01-31 08:39:14,421 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-01-31 08:39:14,545 INFO  L276             CfgBuilder]: Performing block encoding
[2023-01-31 08:39:14,553 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-01-31 08:39:14,555 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2023-01-31 08:39:14,556 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:39:14 BoogieIcfgContainer
[2023-01-31 08:39:14,557 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-01-31 08:39:14,574 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-01-31 08:39:14,575 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-01-31 08:39:14,577 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-01-31 08:39:14,577 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:39:13" (1/3) ...
[2023-01-31 08:39:14,580 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439846f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:39:14, skipping insertion in model container
[2023-01-31 08:39:14,580 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:14" (2/3) ...
[2023-01-31 08:39:14,595 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439846f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:39:14, skipping insertion in model container
[2023-01-31 08:39:14,596 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:39:14" (3/3) ...
[2023-01-31 08:39:14,597 INFO  L112   eAbstractionObserver]: Analyzing ICFG mine-tutorial-ex4.6.i
[2023-01-31 08:39:14,611 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-01-31 08:39:14,615 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-01-31 08:39:14,676 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-01-31 08:39:14,703 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b177c17, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-01-31 08:39:14,704 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-01-31 08:39:14,707 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-01-31 08:39:14,721 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-01-31 08:39:14,721 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:14,722 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:14,722 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:14,728 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:14,728 INFO  L85        PathProgramCache]: Analyzing trace with hash 1815999968, now seen corresponding path program 1 times
[2023-01-31 08:39:14,741 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:14,742 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317025333]
[2023-01-31 08:39:14,746 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:14,746 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:14,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:14,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-31 08:39:14,978 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:14,979 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317025333]
[2023-01-31 08:39:14,979 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317025333] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:39:14,986 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:39:14,986 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-01-31 08:39:14,987 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39827811]
[2023-01-31 08:39:14,988 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:39:15,006 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-01-31 08:39:15,008 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:15,053 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-01-31 08:39:15,068 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-01-31 08:39:15,070 INFO  L87              Difference]: Start difference. First operand  has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:39:15,089 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:15,102 INFO  L93              Difference]: Finished difference Result 32 states and 43 transitions.
[2023-01-31 08:39:15,103 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-01-31 08:39:15,105 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2023-01-31 08:39:15,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:15,110 INFO  L225             Difference]: With dead ends: 32
[2023-01-31 08:39:15,110 INFO  L226             Difference]: Without dead ends: 13
[2023-01-31 08:39:15,128 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-01-31 08:39:15,132 INFO  L413           NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:15,134 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:39:15,146 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2023-01-31 08:39:15,167 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2023-01-31 08:39:15,169 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 8 states have (on average 1.25) internal successors, (10), 10 states have internal predecessors, (10), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-01-31 08:39:15,170 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions.
[2023-01-31 08:39:15,171 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7
[2023-01-31 08:39:15,172 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:15,172 INFO  L495      AbstractCegarLoop]: Abstraction has 13 states and 15 transitions.
[2023-01-31 08:39:15,172 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:39:15,173 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions.
[2023-01-31 08:39:15,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-01-31 08:39:15,174 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:15,174 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:15,175 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-01-31 08:39:15,175 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:15,177 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:15,178 INFO  L85        PathProgramCache]: Analyzing trace with hash 1809535321, now seen corresponding path program 1 times
[2023-01-31 08:39:15,178 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:15,179 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911788486]
[2023-01-31 08:39:15,179 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:15,179 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:15,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:15,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-31 08:39:15,274 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:15,275 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911788486]
[2023-01-31 08:39:15,275 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911788486] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:39:15,276 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:39:15,276 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-01-31 08:39:15,281 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353421688]
[2023-01-31 08:39:15,282 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:39:15,285 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-01-31 08:39:15,285 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:15,286 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-01-31 08:39:15,286 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-31 08:39:15,287 INFO  L87              Difference]: Start difference. First operand 13 states and 15 transitions. Second operand  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:39:15,350 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:15,351 INFO  L93              Difference]: Finished difference Result 23 states and 26 transitions.
[2023-01-31 08:39:15,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-01-31 08:39:15,352 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2023-01-31 08:39:15,352 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:15,352 INFO  L225             Difference]: With dead ends: 23
[2023-01-31 08:39:15,353 INFO  L226             Difference]: Without dead ends: 16
[2023-01-31 08:39:15,353 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-31 08:39:15,354 INFO  L413           NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:15,355 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:39:15,356 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2023-01-31 08:39:15,362 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14.
[2023-01-31 08:39:15,363 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-01-31 08:39:15,375 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2023-01-31 08:39:15,376 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7
[2023-01-31 08:39:15,376 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:15,376 INFO  L495      AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2023-01-31 08:39:15,376 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:39:15,377 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2023-01-31 08:39:15,377 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-01-31 08:39:15,377 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:15,377 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:15,377 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-01-31 08:39:15,378 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:15,378 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:15,378 INFO  L85        PathProgramCache]: Analyzing trace with hash 1811263199, now seen corresponding path program 1 times
[2023-01-31 08:39:15,379 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:15,379 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954940012]
[2023-01-31 08:39:15,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:15,379 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:15,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:15,585 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-31 08:39:15,586 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:15,586 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954940012]
[2023-01-31 08:39:15,586 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954940012] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:39:15,586 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:39:15,587 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-01-31 08:39:15,587 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698357990]
[2023-01-31 08:39:15,587 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:39:15,588 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-01-31 08:39:15,588 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:15,588 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-01-31 08:39:15,590 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-01-31 08:39:15,590 INFO  L87              Difference]: Start difference. First operand 14 states and 16 transitions. Second operand  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:39:15,665 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:15,666 INFO  L93              Difference]: Finished difference Result 20 states and 21 transitions.
[2023-01-31 08:39:15,666 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:39:15,666 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2023-01-31 08:39:15,667 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:15,668 INFO  L225             Difference]: With dead ends: 20
[2023-01-31 08:39:15,668 INFO  L226             Difference]: Without dead ends: 18
[2023-01-31 08:39:15,668 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:39:15,670 INFO  L413           NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:15,672 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:39:15,673 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2023-01-31 08:39:15,677 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2023-01-31 08:39:15,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-01-31 08:39:15,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2023-01-31 08:39:15,680 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7
[2023-01-31 08:39:15,680 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:15,680 INFO  L495      AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2023-01-31 08:39:15,681 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:39:15,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2023-01-31 08:39:15,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-01-31 08:39:15,682 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:15,682 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:15,682 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-01-31 08:39:15,682 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:15,683 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:15,685 INFO  L85        PathProgramCache]: Analyzing trace with hash -1116775810, now seen corresponding path program 1 times
[2023-01-31 08:39:15,685 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:15,686 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102619453]
[2023-01-31 08:39:15,686 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:15,686 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:15,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:15,894 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:39:15,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:15,901 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-31 08:39:15,923 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:15,923 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102619453]
[2023-01-31 08:39:15,924 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102619453] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:39:15,924 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:39:15,924 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-01-31 08:39:15,924 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241024537]
[2023-01-31 08:39:15,924 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:39:15,925 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-01-31 08:39:15,925 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:15,927 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-01-31 08:39:15,927 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:39:15,928 INFO  L87              Difference]: Start difference. First operand 18 states and 19 transitions. Second operand  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-01-31 08:39:16,012 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:16,013 INFO  L93              Difference]: Finished difference Result 35 states and 39 transitions.
[2023-01-31 08:39:16,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-01-31 08:39:16,013 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2023-01-31 08:39:16,014 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:16,014 INFO  L225             Difference]: With dead ends: 35
[2023-01-31 08:39:16,024 INFO  L226             Difference]: Without dead ends: 28
[2023-01-31 08:39:16,025 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:39:16,026 INFO  L413           NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:16,029 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:39:16,031 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2023-01-31 08:39:16,036 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26.
[2023-01-31 08:39:16,037 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-01-31 08:39:16,038 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions.
[2023-01-31 08:39:16,038 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 13
[2023-01-31 08:39:16,039 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:16,039 INFO  L495      AbstractCegarLoop]: Abstraction has 26 states and 28 transitions.
[2023-01-31 08:39:16,039 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-01-31 08:39:16,039 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions.
[2023-01-31 08:39:16,040 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2023-01-31 08:39:16,040 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:16,044 INFO  L195           NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1]
[2023-01-31 08:39:16,044 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-01-31 08:39:16,044 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:16,045 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:16,045 INFO  L85        PathProgramCache]: Analyzing trace with hash 2121583354, now seen corresponding path program 1 times
[2023-01-31 08:39:16,046 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:16,046 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046226748]
[2023-01-31 08:39:16,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:16,046 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:16,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:16,268 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:39:16,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:16,280 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2023-01-31 08:39:16,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:16,294 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2023-01-31 08:39:16,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:16,317 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-01-31 08:39:16,317 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:16,317 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046226748]
[2023-01-31 08:39:16,318 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046226748] provided 0 perfect and 1 imperfect interpolant sequences
[2023-01-31 08:39:16,319 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133896070]
[2023-01-31 08:39:16,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:16,320 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-01-31 08:39:16,320 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:39:16,323 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-01-31 08:39:16,378 INFO  L327       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-01-31 08:39:16,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:16,427 INFO  L263         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-01-31 08:39:16,431 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2023-01-31 08:39:16,576 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-01-31 08:39:16,576 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2023-01-31 08:39:16,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-01-31 08:39:16,700 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [133896070] provided 0 perfect and 2 imperfect interpolant sequences
[2023-01-31 08:39:16,700 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-01-31 08:39:16,701 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12
[2023-01-31 08:39:16,701 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609523612]
[2023-01-31 08:39:16,701 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-01-31 08:39:16,702 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-01-31 08:39:16,702 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:16,702 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-01-31 08:39:16,703 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2023-01-31 08:39:16,703 INFO  L87              Difference]: Start difference. First operand 26 states and 28 transitions. Second operand  has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2023-01-31 08:39:16,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:16,848 INFO  L93              Difference]: Finished difference Result 49 states and 59 transitions.
[2023-01-31 08:39:16,849 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-01-31 08:39:16,849 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25
[2023-01-31 08:39:16,850 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:16,857 INFO  L225             Difference]: With dead ends: 49
[2023-01-31 08:39:16,857 INFO  L226             Difference]: Without dead ends: 40
[2023-01-31 08:39:16,860 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2023-01-31 08:39:16,862 INFO  L413           NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:16,863 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:39:16,863 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2023-01-31 08:39:16,868 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2023-01-31 08:39:16,869 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-01-31 08:39:16,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions.
[2023-01-31 08:39:16,873 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25
[2023-01-31 08:39:16,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:16,887 INFO  L495      AbstractCegarLoop]: Abstraction has 40 states and 47 transitions.
[2023-01-31 08:39:16,888 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2023-01-31 08:39:16,888 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions.
[2023-01-31 08:39:16,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2023-01-31 08:39:16,892 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:16,892 INFO  L195           NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:16,899 INFO  L540       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-01-31 08:39:17,096 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-01-31 08:39:17,096 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:17,097 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:17,097 INFO  L85        PathProgramCache]: Analyzing trace with hash 1195524293, now seen corresponding path program 1 times
[2023-01-31 08:39:17,097 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:17,098 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547520248]
[2023-01-31 08:39:17,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:17,098 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:17,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,281 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:39:17,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,285 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2023-01-31 08:39:17,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,288 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2023-01-31 08:39:17,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,290 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-01-31 08:39:17,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,291 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2023-01-31 08:39:17,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,306 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2023-01-31 08:39:17,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,315 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2023-01-31 08:39:17,316 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,317 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2023-01-31 08:39:17,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,319 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2023-01-31 08:39:17,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,321 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2023-01-31 08:39:17,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:17,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 245 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked.
[2023-01-31 08:39:17,324 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:17,324 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547520248]
[2023-01-31 08:39:17,324 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547520248] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:39:17,325 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:39:17,325 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-01-31 08:39:17,325 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648757130]
[2023-01-31 08:39:17,325 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:39:17,326 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-01-31 08:39:17,326 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:17,340 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-01-31 08:39:17,343 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-01-31 08:39:17,343 INFO  L87              Difference]: Start difference. First operand 40 states and 47 transitions. Second operand  has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-01-31 08:39:17,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:17,372 INFO  L93              Difference]: Finished difference Result 40 states and 47 transitions.
[2023-01-31 08:39:17,372 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:39:17,372 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67
[2023-01-31 08:39:17,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:17,373 INFO  L225             Difference]: With dead ends: 40
[2023-01-31 08:39:17,373 INFO  L226             Difference]: Without dead ends: 0
[2023-01-31 08:39:17,375 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:39:17,377 INFO  L413           NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:17,377 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 37 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:39:17,391 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-01-31 08:39:17,391 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-01-31 08:39:17,392 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:39:17,392 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-01-31 08:39:17,392 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67
[2023-01-31 08:39:17,392 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:17,392 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-01-31 08:39:17,392 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-01-31 08:39:17,393 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-01-31 08:39:17,393 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2023-01-31 08:39:17,395 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-01-31 08:39:17,395 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-01-31 08:39:17,397 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-01-31 08:39:17,486 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-01-31 08:39:17,486 INFO  L899   garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2023-01-31 08:39:17,486 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2023-01-31 08:39:17,486 INFO  L899   garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed.
[2023-01-31 08:39:17,487 INFO  L895   garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 40))
[2023-01-31 08:39:17,487 INFO  L895   garLoopResultBuilder]: At program point L19-1(lines 16 20) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 40))
[2023-01-31 08:39:17,487 INFO  L895   garLoopResultBuilder]: At program point L17(line 17) the Hoare annotation is: (and (< 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 40))
[2023-01-31 08:39:17,488 INFO  L899   garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed.
[2023-01-31 08:39:17,488 INFO  L895   garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (= |ULTIMATE.start_main_~x~0#1| 0)
[2023-01-31 08:39:17,488 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-01-31 08:39:17,488 INFO  L902   garLoopResultBuilder]: At program point main_returnLabel#1(lines 14 23) the Hoare annotation is: true
[2023-01-31 08:39:17,488 INFO  L899   garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:17,489 INFO  L899   garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:17,489 INFO  L899   garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:17,491 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:17,491 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true
[2023-01-31 08:39:17,491 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:17,494 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:17,495 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-01-31 08:39:17,521 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:39:17 BoogieIcfgContainer
[2023-01-31 08:39:17,521 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-01-31 08:39:17,522 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-01-31 08:39:17,522 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2023-01-31 08:39:17,522 INFO  L275        PluginConnector]: Witness Printer initialized
[2023-01-31 08:39:17,522 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:39:14" (3/4) ...
[2023-01-31 08:39:17,525 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2023-01-31 08:39:17,529 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2023-01-31 08:39:17,537 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2023-01-31 08:39:17,537 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-01-31 08:39:17,537 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2023-01-31 08:39:17,538 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-01-31 08:39:17,586 INFO  L141         WitnessManager]: Wrote witness to /mnt/thread-witnesses/replication/UAutomizer-linux/witness.graphml
[2023-01-31 08:39:17,586 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-01-31 08:39:17,587 INFO  L158              Benchmark]: Toolchain (without parser) took 3716.18ms. Allocated memory was 41.0MB in the beginning and 51.0MB in the end (delta: 10.0MB). Free memory was 13.9MB in the beginning and 17.9MB in the end (delta: -4.0MB). Peak memory consumption was 6.0MB. Max. memory is 15.6GB.
[2023-01-31 08:39:17,587 INFO  L158              Benchmark]: CDTParser took 0.15ms. Allocated memory is still 37.5MB. Free memory was 12.3MB in the beginning and 12.3MB in the end (delta: 42.0kB). Peak memory consumption was 42.0kB. Max. memory is 15.6GB.
[2023-01-31 08:39:17,588 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 312.54ms. Allocated memory is still 41.0MB. Free memory was 13.7MB in the beginning and 14.6MB in the end (delta: -925.6kB). Peak memory consumption was 4.2MB. Max. memory is 15.6GB.
[2023-01-31 08:39:17,590 INFO  L158              Benchmark]: Boogie Procedure Inliner took 29.05ms. Allocated memory is still 41.0MB. Free memory was 14.6MB in the beginning and 13.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.3MB. Max. memory is 15.6GB.
[2023-01-31 08:39:17,590 INFO  L158              Benchmark]: Boogie Preprocessor took 31.60ms. Allocated memory is still 41.0MB. Free memory was 13.3MB in the beginning and 12.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.1MB. Max. memory is 15.6GB.
[2023-01-31 08:39:17,591 INFO  L158              Benchmark]: RCFGBuilder took 300.92ms. Allocated memory is still 41.0MB. Free memory was 12.2MB in the beginning and 13.9MB in the end (delta: -1.7MB). Peak memory consumption was 3.8MB. Max. memory is 15.6GB.
[2023-01-31 08:39:17,591 INFO  L158              Benchmark]: TraceAbstraction took 2947.18ms. Allocated memory was 41.0MB in the beginning and 51.0MB in the end (delta: 10.0MB). Free memory was 13.2MB in the beginning and 20.1MB in the end (delta: -6.9MB). Peak memory consumption was 3.0MB. Max. memory is 15.6GB.
[2023-01-31 08:39:17,592 INFO  L158              Benchmark]: Witness Printer took 64.62ms. Allocated memory is still 51.0MB. Free memory was 20.1MB in the beginning and 17.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.2MB. Max. memory is 15.6GB.
[2023-01-31 08:39:17,594 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.15ms. Allocated memory is still 37.5MB. Free memory was 12.3MB in the beginning and 12.3MB in the end (delta: 42.0kB). Peak memory consumption was 42.0kB. Max. memory is 15.6GB.
 * CACSL2BoogieTranslator took 312.54ms. Allocated memory is still 41.0MB. Free memory was 13.7MB in the beginning and 14.6MB in the end (delta: -925.6kB). Peak memory consumption was 4.2MB. Max. memory is 15.6GB.
 * Boogie Procedure Inliner took 29.05ms. Allocated memory is still 41.0MB. Free memory was 14.6MB in the beginning and 13.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.3MB. Max. memory is 15.6GB.
 * Boogie Preprocessor took 31.60ms. Allocated memory is still 41.0MB. Free memory was 13.3MB in the beginning and 12.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.1MB. Max. memory is 15.6GB.
 * RCFGBuilder took 300.92ms. Allocated memory is still 41.0MB. Free memory was 12.2MB in the beginning and 13.9MB in the end (delta: -1.7MB). Peak memory consumption was 3.8MB. Max. memory is 15.6GB.
 * TraceAbstraction took 2947.18ms. Allocated memory was 41.0MB in the beginning and 51.0MB in the end (delta: 10.0MB). Free memory was 13.2MB in the beginning and 20.1MB in the end (delta: -6.9MB). Peak memory consumption was 3.0MB. Max. memory is 15.6GB.
 * Witness Printer took 64.62ms. Allocated memory is still 51.0MB. Free memory was 20.1MB in the beginning and 17.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.2MB. Max. memory is 15.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 13]: call to reach_error is unreachable
    For all program executions holds that call to reach_error is unreachable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 128 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 87 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 22 PreInvPairs, 40 NumberOfFragments, 26 HoareAnnotationTreeSize, 22 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 266 SizeOfPredicates, 1 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 301/313 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 14]: Loop Invariant
    Derived loop invariant: 1
  - InvariantResult [Line: 16]: Loop Invariant
    Derived loop invariant: 0 <= x && x <= 40
RESULT: Ultimate proved your program to be correct!
[2023-01-31 08:39:17,631 INFO  L540       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
