/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:30:51,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:30:51,418 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:30:51,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:30:51,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:30:51,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:30:51,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:30:51,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:30:51,463 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:30:51,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:30:51,466 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:30:51,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:30:51,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:30:51,468 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:30:51,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:30:51,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:30:51,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:30:51,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:30:51,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:30:51,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:30:51,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:30:51,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:30:51,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:30:51,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:30:51,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:30:51,471 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:30:51,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:30:51,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:30:51,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:30:51,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:30:51,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:30:51,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:30:51,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:30:51,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:30:51,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:30:51,474 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:30:51,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:30:51,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:30:51,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:30:51,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:30:51,796 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:30:51,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-26 21:30:53,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:30:53,339 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:30:53,339 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-26 21:30:53,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d19d49b/d5e8c2ecf96c457987eea25fa2e3d76e/FLAGc9cbc11ad [2023-08-26 21:30:53,384 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d19d49b/d5e8c2ecf96c457987eea25fa2e3d76e [2023-08-26 21:30:53,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:30:53,390 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:30:53,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:30:53,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:30:53,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:30:53,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:30:53" (1/1) ... [2023-08-26 21:30:53,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3a56df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:53, skipping insertion in model container [2023-08-26 21:30:53,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:30:53" (1/1) ... [2023-08-26 21:30:53,461 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:30:54,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:30:54,063 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:30:54,086 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 21:30:54,088 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 21:30:54,099 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-26 21:30:54,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:30:54,215 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:30:54,216 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:30:54,221 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:30:54,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54 WrapperNode [2023-08-26 21:30:54,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:30:54,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:30:54,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:30:54,222 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:30:54,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,283 INFO L138 Inliner]: procedures = 482, calls = 34, calls flagged for inlining = 9, calls inlined = 12, statements flattened = 102 [2023-08-26 21:30:54,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:30:54,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:30:54,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:30:54,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:30:54,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,334 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:30:54,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:30:54,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:30:54,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:30:54,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (1/1) ... [2023-08-26 21:30:54,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:30:54,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:30:54,396 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) [2023-08-26 21:30:54,417 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 [2023-08-26 21:30:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:30:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:30:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:30:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 21:30:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 21:30:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:30:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 21:30:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:30:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:30:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:30:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 21:30:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 21:30:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:30:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:30:54,432 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:30:54,663 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:30:54,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:30:54,787 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:30:54,835 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:30:54,835 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:30:54,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:30:54 BoogieIcfgContainer [2023-08-26 21:30:54,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:30:54,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:30:54,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:30:54,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:30:54,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:30:53" (1/3) ... [2023-08-26 21:30:54,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487df940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:30:54, skipping insertion in model container [2023-08-26 21:30:54,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:54" (2/3) ... [2023-08-26 21:30:54,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487df940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:30:54, skipping insertion in model container [2023-08-26 21:30:54,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:30:54" (3/3) ... [2023-08-26 21:30:54,846 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2023-08-26 21:30:54,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:30:54,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 21:30:54,861 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:30:54,914 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 21:30:54,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 107 transitions, 222 flow [2023-08-26 21:30:55,006 INFO L124 PetriNetUnfolderBase]: 7/118 cut-off events. [2023-08-26 21:30:55,006 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:30:55,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 118 events. 7/118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 187 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2023-08-26 21:30:55,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 107 transitions, 222 flow [2023-08-26 21:30:55,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 86 transitions, 178 flow [2023-08-26 21:30:55,018 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:30:55,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 86 transitions, 178 flow [2023-08-26 21:30:55,028 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 86 transitions, 178 flow [2023-08-26 21:30:55,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 86 transitions, 178 flow [2023-08-26 21:30:55,051 INFO L124 PetriNetUnfolderBase]: 2/86 cut-off events. [2023-08-26 21:30:55,052 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:30:55,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 86 events. 2/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-26 21:30:55,053 INFO L119 LiptonReduction]: Number of co-enabled transitions 182 [2023-08-26 21:30:57,903 INFO L134 LiptonReduction]: Checked pairs total: 248 [2023-08-26 21:30:57,904 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-26 21:30:57,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:30:57,922 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;@73491630, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:30:57,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-26 21:30:57,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:30:57,923 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 21:30:57,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:57,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:57,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 21:30:57,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-26 21:30:57,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash 415, now seen corresponding path program 1 times [2023-08-26 21:30:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:57,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907629397] [2023-08-26 21:30:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:57,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:58,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907629397] [2023-08-26 21:30:58,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907629397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:58,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:58,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 21:30:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614770332] [2023-08-26 21:30:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:58,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 21:30:58,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:58,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 21:30:58,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 21:30:58,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 195 [2023-08-26 21:30:58,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 26 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 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) [2023-08-26 21:30:58,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:58,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 195 [2023-08-26 21:30:58,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:58,164 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-08-26 21:30:58,165 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:30:58,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 13 events. 3/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 3 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 20. Up to 14 conditions per place. [2023-08-26 21:30:58,166 INFO L140 encePairwiseOnDemand]: 192/195 looper letters, 5 selfloop transitions, 0 changer transitions 2/7 dead transitions. [2023-08-26 21:30:58,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 34 flow [2023-08-26 21:30:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 21:30:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 21:30:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2023-08-26 21:30:58,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2023-08-26 21:30:58,184 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2023-08-26 21:30:58,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2023-08-26 21:30:58,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:58,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2023-08-26 21:30:58,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 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) [2023-08-26 21:30:58,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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) [2023-08-26 21:30:58,201 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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) [2023-08-26 21:30:58,203 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 26 flow. Second operand 2 states and 198 transitions. [2023-08-26 21:30:58,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 34 flow [2023-08-26 21:30:58,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:58,206 INFO L231 Difference]: Finished difference. Result has 10 places, 5 transitions, 11 flow [2023-08-26 21:30:58,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=11, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2023-08-26 21:30:58,212 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2023-08-26 21:30:58,212 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 11 flow [2023-08-26 21:30:58,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 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) [2023-08-26 21:30:58,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:58,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 21:30:58,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:30:58,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-26 21:30:58,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:58,214 INFO L85 PathProgramCache]: Analyzing trace with hash 12720315, now seen corresponding path program 1 times [2023-08-26 21:30:58,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:58,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870873447] [2023-08-26 21:30:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:58,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:58,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870873447] [2023-08-26 21:30:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870873447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:58,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:58,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:58,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275809533] [2023-08-26 21:30:58,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:58,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:58,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 195 [2023-08-26 21:30:58,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 5 transitions, 11 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-08-26 21:30:58,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:58,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 195 [2023-08-26 21:30:58,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:58,420 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-26 21:30:58,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:58,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-08-26 21:30:58,421 INFO L140 encePairwiseOnDemand]: 192/195 looper letters, 3 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2023-08-26 21:30:58,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 25 flow [2023-08-26 21:30:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-08-26 21:30:58,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478632478632479 [2023-08-26 21:30:58,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-08-26 21:30:58,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-08-26 21:30:58,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:58,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-08-26 21:30:58,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2023-08-26 21:30:58,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 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) [2023-08-26 21:30:58,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 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) [2023-08-26 21:30:58,432 INFO L175 Difference]: Start difference. First operand has 10 places, 5 transitions, 11 flow. Second operand 3 states and 262 transitions. [2023-08-26 21:30:58,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 25 flow [2023-08-26 21:30:58,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 25 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:30:58,433 INFO L231 Difference]: Finished difference. Result has 11 places, 5 transitions, 19 flow [2023-08-26 21:30:58,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2023-08-26 21:30:58,434 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2023-08-26 21:30:58,435 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 19 flow [2023-08-26 21:30:58,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-08-26 21:30:58,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:58,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:30:58,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:30:58,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-26 21:30:58,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:58,445 INFO L85 PathProgramCache]: Analyzing trace with hash 394335089, now seen corresponding path program 1 times [2023-08-26 21:30:58,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:58,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356086612] [2023-08-26 21:30:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:58,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:30:58,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:30:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:30:58,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:30:58,543 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:30:58,544 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2023-08-26 21:30:58,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2023-08-26 21:30:58,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2023-08-26 21:30:58,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2023-08-26 21:30:58,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-26 21:30:58,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:30:58,548 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 21:30:58,553 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:30:58,553 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:30:58,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:30:58 BasicIcfg [2023-08-26 21:30:58,582 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:30:58,583 INFO L158 Benchmark]: Toolchain (without parser) took 5192.68ms. Allocated memory is still 396.4MB. Free memory was 349.3MB in the beginning and 201.1MB in the end (delta: 148.2MB). Peak memory consumption was 150.3MB. Max. memory is 16.0GB. [2023-08-26 21:30:58,583 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 396.4MB. Free memory is still 373.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:30:58,585 INFO L158 Benchmark]: CACSL2BoogieTranslator took 829.41ms. Allocated memory is still 396.4MB. Free memory was 348.2MB in the beginning and 295.7MB in the end (delta: 52.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-08-26 21:30:58,586 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.32ms. Allocated memory is still 396.4MB. Free memory was 295.7MB in the beginning and 292.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:30:58,588 INFO L158 Benchmark]: Boogie Preprocessor took 77.21ms. Allocated memory is still 396.4MB. Free memory was 292.7MB in the beginning and 290.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:30:58,589 INFO L158 Benchmark]: RCFGBuilder took 475.17ms. Allocated memory is still 396.4MB. Free memory was 290.6MB in the beginning and 266.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-26 21:30:58,589 INFO L158 Benchmark]: TraceAbstraction took 3741.95ms. Allocated memory is still 396.4MB. Free memory was 265.4MB in the beginning and 201.1MB in the end (delta: 64.3MB). Peak memory consumption was 66.4MB. Max. memory is 16.0GB. [2023-08-26 21:30:58,595 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 396.4MB. Free memory is still 373.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 829.41ms. Allocated memory is still 396.4MB. Free memory was 348.2MB in the beginning and 295.7MB in the end (delta: 52.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.32ms. Allocated memory is still 396.4MB. Free memory was 295.7MB in the beginning and 292.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 77.21ms. Allocated memory is still 396.4MB. Free memory was 292.7MB in the beginning and 290.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 475.17ms. Allocated memory is still 396.4MB. Free memory was 290.6MB in the beginning and 266.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 3741.95ms. Allocated memory is still 396.4MB. Free memory was 265.4MB in the beginning and 201.1MB in the end (delta: 64.3MB). Peak memory consumption was 66.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 729]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [729] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 88 PlacesBefore, 14 PlacesAfterwards, 86 TransitionsBefore, 10 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 88 TotalNumberOfCompositions, 248 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 213, independent: 172, independent conditional: 0, independent unconditional: 172, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 115, independent: 100, independent conditional: 0, independent unconditional: 100, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 213, independent: 72, independent conditional: 0, independent unconditional: 72, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 115, unknown conditional: 0, unknown unconditional: 115] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1693]: assertion can be violated assertion can be violated We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] CALL 0 reach_error() [L1693] COND FALSE 0 !(0) [L1693] 0 __assert_fail ("0", "race-1_2-join.c", 10, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1693]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 109 locations, 5 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: 3.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-26 21:30:58,612 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...