/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:38:51,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:38:51,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:38:51,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:38:51,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:38:51,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:38:51,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:38:51,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:38:51,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:38:51,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:38:51,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:38:51,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:38:51,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:38:51,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:38:51,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:38:51,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:38:51,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:38:51,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:38:51,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:38:51,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:38:51,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:38:51,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:38:51,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:38:51,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:38:51,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:38:51,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:38:51,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:38:51,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:38:51,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:38:51,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:38:51,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:38:51,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:38:51,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:38:51,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:38:51,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:38:51,603 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:38:51,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:38:51,603 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:38:51,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:38:51,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:38:51,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:38:51,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:38:51,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:38:51,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:38:51,605 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:38:51,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:38:51,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:38:51,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:38:51,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:38:51,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:38:51,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:38:51,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:38:51,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:38:51,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:38:51,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:38:51,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:38:51,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:38:51,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:38:51,606 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:38:51,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:38:51,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:38:51,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:38:51,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:38:51,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:38:51,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:38:51,871 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:38:51,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2022-09-16 11:38:51,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc110da7a/63f0357e0fbe409895109fcdcb044a52/FLAGfd6840013 [2022-09-16 11:38:52,390 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:38:52,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2022-09-16 11:38:52,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc110da7a/63f0357e0fbe409895109fcdcb044a52/FLAGfd6840013 [2022-09-16 11:38:52,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc110da7a/63f0357e0fbe409895109fcdcb044a52 [2022-09-16 11:38:52,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:38:52,730 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:38:52,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:38:52,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:38:52,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:38:52,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:38:52" (1/1) ... [2022-09-16 11:38:52,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c521395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:52, skipping insertion in model container [2022-09-16 11:38:52,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:38:52" (1/1) ... [2022-09-16 11:38:52,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:38:52,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:38:52,936 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-16 11:38:53,103 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i[30458,30471] [2022-09-16 11:38:53,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:38:53,136 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:38:53,150 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-16 11:38:53,186 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i[30458,30471] [2022-09-16 11:38:53,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:38:53,239 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:38:53,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53 WrapperNode [2022-09-16 11:38:53,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:38:53,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:38:53,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:38:53,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:38:53,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,300 INFO L138 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2022-09-16 11:38:53,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:38:53,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:38:53,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:38:53,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:38:53,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:38:53,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:38:53,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:38:53,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:38:53,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (1/1) ... [2022-09-16 11:38:53,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:38:53,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:38:53,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:38:53,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:38:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:38:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:38:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:38:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:38:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:38:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:38:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:38:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-09-16 11:38:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-09-16 11:38:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:38:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:38:53,419 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:38:53,516 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:38:53,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:38:53,650 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:38:53,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:38:53,656 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:38:53,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:38:53 BoogieIcfgContainer [2022-09-16 11:38:53,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:38:53,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:38:53,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:38:53,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:38:53,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:38:52" (1/3) ... [2022-09-16 11:38:53,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf514b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:38:53, skipping insertion in model container [2022-09-16 11:38:53,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:38:53" (2/3) ... [2022-09-16 11:38:53,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf514b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:38:53, skipping insertion in model container [2022-09-16 11:38:53,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:38:53" (3/3) ... [2022-09-16 11:38:53,681 INFO L112 eAbstractionObserver]: Analyzing ICFG condvar.i [2022-09-16 11:38:53,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:38:53,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-16 11:38:53,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:38:53,790 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-16 11:38:53,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 170 flow [2022-09-16 11:38:53,866 INFO L130 PetriNetUnfolder]: 5/80 cut-off events. [2022-09-16 11:38:53,867 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:38:53,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 5/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2022-09-16 11:38:53,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 81 transitions, 170 flow [2022-09-16 11:38:53,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 73 transitions, 149 flow [2022-09-16 11:38:53,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:38:53,898 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=false, 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;@11db68cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:38:53,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-16 11:38:53,916 INFO L130 PetriNetUnfolder]: 4/66 cut-off events. [2022-09-16 11:38:53,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:38:53,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:38:53,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:38:53,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-16 11:38:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:38:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1976570575, now seen corresponding path program 1 times [2022-09-16 11:38:53,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:38:53,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450820908] [2022-09-16 11:38:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:38:53,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:38:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:38:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:38:54,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:38:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450820908] [2022-09-16 11:38:54,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450820908] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:38:54,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:38:54,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:38:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441149741] [2022-09-16 11:38:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:38:54,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:38:54,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:38:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:38:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:38:54,256 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 81 [2022-09-16 11:38:54,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2022-09-16 11:38:54,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:38:54,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 81 [2022-09-16 11:38:54,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:38:54,363 INFO L130 PetriNetUnfolder]: 2/77 cut-off events. [2022-09-16 11:38:54,364 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:38:54,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 77 events. 2/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 34/106 useless extension candidates. Maximal degree in co-relation 53. Up to 14 conditions per place. [2022-09-16 11:38:54,366 INFO L137 encePairwiseOnDemand]: 71/81 looper letters, 16 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2022-09-16 11:38:54,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 197 flow [2022-09-16 11:38:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:38:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:38:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2022-09-16 11:38:54,384 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8716049382716049 [2022-09-16 11:38:54,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 353 transitions. [2022-09-16 11:38:54,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 353 transitions. [2022-09-16 11:38:54,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:38:54,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 353 transitions. [2022-09-16 11:38:54,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 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) [2022-09-16 11:38:54,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-09-16 11:38:54,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-09-16 11:38:54,408 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 149 flow. Second operand 5 states and 353 transitions. [2022-09-16 11:38:54,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 197 flow [2022-09-16 11:38:54,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:38:54,416 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 174 flow [2022-09-16 11:38:54,418 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2022-09-16 11:38:54,422 INFO L287 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2022-09-16 11:38:54,422 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 174 flow [2022-09-16 11:38:54,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2022-09-16 11:38:54,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:38:54,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:38:54,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:38:54,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-16 11:38:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:38:54,424 INFO L85 PathProgramCache]: Analyzing trace with hash -313719646, now seen corresponding path program 1 times [2022-09-16 11:38:54,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:38:54,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920780553] [2022-09-16 11:38:54,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:38:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:38:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:38:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:38:54,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:38:54,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920780553] [2022-09-16 11:38:54,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920780553] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:38:54,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:38:54,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:38:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915018139] [2022-09-16 11:38:54,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:38:54,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:38:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:38:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:38:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:38:54,565 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 81 [2022-09-16 11:38:54,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 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) [2022-09-16 11:38:54,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:38:54,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 81 [2022-09-16 11:38:54,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:38:54,631 INFO L130 PetriNetUnfolder]: 2/76 cut-off events. [2022-09-16 11:38:54,632 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:38:54,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 76 events. 2/76 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 76. Up to 7 conditions per place. [2022-09-16 11:38:54,633 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 8 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2022-09-16 11:38:54,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 73 transitions, 204 flow [2022-09-16 11:38:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:38:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:38:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 334 transitions. [2022-09-16 11:38:54,639 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8246913580246914 [2022-09-16 11:38:54,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 334 transitions. [2022-09-16 11:38:54,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 334 transitions. [2022-09-16 11:38:54,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:38:54,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 334 transitions. [2022-09-16 11:38:54,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 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) [2022-09-16 11:38:54,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-09-16 11:38:54,643 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-09-16 11:38:54,643 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 174 flow. Second operand 5 states and 334 transitions. [2022-09-16 11:38:54,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 73 transitions, 204 flow [2022-09-16 11:38:54,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 73 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:38:54,646 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 192 flow [2022-09-16 11:38:54,646 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2022-09-16 11:38:54,647 INFO L287 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2022-09-16 11:38:54,647 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 192 flow [2022-09-16 11:38:54,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 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) [2022-09-16 11:38:54,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:38:54,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:38:54,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:38:54,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-16 11:38:54,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:38:54,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1135374234, now seen corresponding path program 1 times [2022-09-16 11:38:54,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:38:54,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665159946] [2022-09-16 11:38:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:38:54,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:38:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:38:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:38:54,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:38:54,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665159946] [2022-09-16 11:38:54,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665159946] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:38:54,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140214540] [2022-09-16 11:38:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:38:54,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:38:54,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:38:54,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:38:54,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:38:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:38:54,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:38:54,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:38:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:38:55,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:38:55,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140214540] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:38:55,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:38:55,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:38:55,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083454955] [2022-09-16 11:38:55,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:38:55,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:38:55,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:38:55,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:38:55,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:38:55,009 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 81 [2022-09-16 11:38:55,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 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) [2022-09-16 11:38:55,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:38:55,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 81 [2022-09-16 11:38:55,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:38:55,128 INFO L130 PetriNetUnfolder]: 2/75 cut-off events. [2022-09-16 11:38:55,128 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-09-16 11:38:55,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 75 events. 2/75 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 1/74 useless extension candidates. Maximal degree in co-relation 80. Up to 5 conditions per place. [2022-09-16 11:38:55,131 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2022-09-16 11:38:55,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 230 flow [2022-09-16 11:38:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:38:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:38:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 467 transitions. [2022-09-16 11:38:55,138 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8236331569664903 [2022-09-16 11:38:55,138 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 467 transitions. [2022-09-16 11:38:55,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 467 transitions. [2022-09-16 11:38:55,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:38:55,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 467 transitions. [2022-09-16 11:38:55,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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) [2022-09-16 11:38:55,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-09-16 11:38:55,142 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-09-16 11:38:55,142 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 192 flow. Second operand 7 states and 467 transitions. [2022-09-16 11:38:55,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 230 flow [2022-09-16 11:38:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 75 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:38:55,145 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2022-09-16 11:38:55,145 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2022-09-16 11:38:55,146 INFO L287 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2022-09-16 11:38:55,146 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2022-09-16 11:38:55,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 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) [2022-09-16 11:38:55,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 3 remaining) [2022-09-16 11:38:55,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 3 remaining) [2022-09-16 11:38:55,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-16 11:38:55,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:38:55,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:38:55,371 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-16 11:38:55,374 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:38:55,374 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:38:55,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:38:55 BasicIcfg [2022-09-16 11:38:55,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:38:55,379 INFO L158 Benchmark]: Toolchain (without parser) took 2649.47ms. Allocated memory is still 252.7MB. Free memory was 226.5MB in the beginning and 216.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-09-16 11:38:55,380 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:38:55,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.94ms. Allocated memory is still 252.7MB. Free memory was 226.0MB in the beginning and 211.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-09-16 11:38:55,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.96ms. Allocated memory is still 252.7MB. Free memory was 211.7MB in the beginning and 209.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:38:55,381 INFO L158 Benchmark]: Boogie Preprocessor took 39.73ms. Allocated memory is still 252.7MB. Free memory was 209.6MB in the beginning and 208.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:38:55,382 INFO L158 Benchmark]: RCFGBuilder took 322.78ms. Allocated memory is still 252.7MB. Free memory was 208.0MB in the beginning and 194.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-09-16 11:38:55,382 INFO L158 Benchmark]: TraceAbstraction took 1712.81ms. Allocated memory is still 252.7MB. Free memory was 194.4MB in the beginning and 216.4MB in the end (delta: -22.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:38:55,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 508.94ms. Allocated memory is still 252.7MB. Free memory was 226.0MB in the beginning and 211.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.96ms. Allocated memory is still 252.7MB. Free memory was 211.7MB in the beginning and 209.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.73ms. Allocated memory is still 252.7MB. Free memory was 209.6MB in the beginning and 208.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 322.78ms. Allocated memory is still 252.7MB. Free memory was 208.0MB in the beginning and 194.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1712.81ms. Allocated memory is still 252.7MB. Free memory was 194.4MB in the beginning and 216.4MB in the end (delta: -22.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 713]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 713]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 91 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 14 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 215 ConstructedInterpolants, 0 QuantifiedInterpolants, 277 SizeOfPredicates, 3 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/14 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:38:55,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...