/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -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/weaver/parallel-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:09:54,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:09:54,456 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 [2023-08-27 07:09:54,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:09:54,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:09:54,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:09:54,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:09:54,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:09:54,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:09:54,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:09:54,498 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:09:54,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:09:54,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:09:54,499 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:09:54,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:09:54,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:09:54,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:09:54,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:09:54,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:09:54,500 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:09:54,501 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:09:54,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:09:54,502 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:09:54,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:09:54,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:09:54,503 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:09:54,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:09:54,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:09:54,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:09:54,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:09:54,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:09:54,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:09:54,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:09:54,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:09:54,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:09:54,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:09:54,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:09:54,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:09:54,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:09:54,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:09:54,866 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:09:54,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2023-08-27 07:09:56,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:09:56,224 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:09:56,224 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2023-08-27 07:09:56,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310a73777/211fa743c4ae41e58343b2e16b1a617c/FLAGaecced074 [2023-08-27 07:09:56,239 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310a73777/211fa743c4ae41e58343b2e16b1a617c [2023-08-27 07:09:56,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:09:56,242 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:09:56,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:09:56,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:09:56,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:09:56,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f5c7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56, skipping insertion in model container [2023-08-27 07:09:56,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,263 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:09:56,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:09:56,399 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:09:56,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:09:56,422 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:09:56,422 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:09:56,427 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:09:56,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56 WrapperNode [2023-08-27 07:09:56,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:09:56,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:09:56,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:09:56,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:09:56,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,466 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2023-08-27 07:09:56,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:09:56,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:09:56,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:09:56,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:09:56,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:09:56,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:09:56,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:09:56,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:09:56,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (1/1) ... [2023-08-27 07:09:56,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:09:56,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:56,534 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) [2023-08-27 07:09:56,564 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 [2023-08-27 07:09:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:09:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:09:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:09:56,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:09:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:09:56,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:09:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:09:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:09:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:09:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:09:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:09:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:09:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:09:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:09:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:09:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:09:56,577 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 07:09:56,670 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:09:56,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:09:56,895 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:09:56,923 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:09:56,924 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 07:09:56,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:09:56 BoogieIcfgContainer [2023-08-27 07:09:56,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:09:56,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:09:56,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:09:56,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:09:56,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:09:56" (1/3) ... [2023-08-27 07:09:56,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464281fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:09:56, skipping insertion in model container [2023-08-27 07:09:56,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:09:56" (2/3) ... [2023-08-27 07:09:56,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464281fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:09:56, skipping insertion in model container [2023-08-27 07:09:56,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:09:56" (3/3) ... [2023-08-27 07:09:56,938 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2023-08-27 07:09:56,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:09:56,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 07:09:56,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:09:57,027 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 07:09:57,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 206 flow [2023-08-27 07:09:57,131 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-08-27 07:09:57,131 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:09:57,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 2/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-27 07:09:57,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 206 flow [2023-08-27 07:09:57,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 77 transitions, 172 flow [2023-08-27 07:09:57,143 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:09:57,160 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 77 transitions, 172 flow [2023-08-27 07:09:57,162 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 77 transitions, 172 flow [2023-08-27 07:09:57,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 77 transitions, 172 flow [2023-08-27 07:09:57,203 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2023-08-27 07:09:57,203 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:09:57,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 24 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-27 07:09:57,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2023-08-27 07:09:59,533 INFO L134 LiptonReduction]: Checked pairs total: 477 [2023-08-27 07:09:59,534 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-27 07:09:59,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:09:59,560 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;@1a82e6f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:09:59,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-27 07:09:59,565 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:09:59,566 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-27 07:09:59,566 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:09:59,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:59,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:59,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 07:09:59,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1975383607, now seen corresponding path program 1 times [2023-08-27 07:09:59,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245192763] [2023-08-27 07:09:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:59,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:00,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245192763] [2023-08-27 07:10:00,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245192763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:00,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:00,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:10:00,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626003742] [2023-08-27 07:10:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:00,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:10:00,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:10:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:10:00,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 160 [2023-08-27 07:10:00,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-27 07:10:00,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:00,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 160 [2023-08-27 07:10:00,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:00,397 INFO L124 PetriNetUnfolderBase]: 40/96 cut-off events. [2023-08-27 07:10:00,397 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 07:10:00,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 96 events. 40/96 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 246 event pairs, 13 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 168. Up to 67 conditions per place. [2023-08-27 07:10:00,400 INFO L140 encePairwiseOnDemand]: 155/160 looper letters, 20 selfloop transitions, 3 changer transitions 14/37 dead transitions. [2023-08-27 07:10:00,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 184 flow [2023-08-27 07:10:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:10:00,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:10:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-08-27 07:10:00,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2023-08-27 07:10:00,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-08-27 07:10:00,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-08-27 07:10:00,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:00,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-08-27 07:10:00,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 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) [2023-08-27 07:10:00,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-08-27 07:10:00,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-08-27 07:10:00,438 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 388 transitions. [2023-08-27 07:10:00,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 184 flow [2023-08-27 07:10:00,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 07:10:00,442 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 67 flow [2023-08-27 07:10:00,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-27 07:10:00,447 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-27 07:10:00,447 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 67 flow [2023-08-27 07:10:00,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-27 07:10:00,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:00,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:00,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:10:00,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 07:10:00,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1850841795, now seen corresponding path program 2 times [2023-08-27 07:10:00,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:00,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159019678] [2023-08-27 07:10:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:00,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:00,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159019678] [2023-08-27 07:10:00,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159019678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:00,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:00,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:10:00,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266667605] [2023-08-27 07:10:00,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:00,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 07:10:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 07:10:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:10:00,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-27 07:10:00,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 67 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 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) [2023-08-27 07:10:00,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:00,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-27 07:10:00,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:00,974 INFO L124 PetriNetUnfolderBase]: 31/79 cut-off events. [2023-08-27 07:10:00,974 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-27 07:10:00,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 79 events. 31/79 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 202 event pairs, 0 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 107. Up to 40 conditions per place. [2023-08-27 07:10:00,975 INFO L140 encePairwiseOnDemand]: 155/160 looper letters, 22 selfloop transitions, 4 changer transitions 16/42 dead transitions. [2023-08-27 07:10:00,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 222 flow [2023-08-27 07:10:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:10:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:10:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-08-27 07:10:00,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510416666666667 [2023-08-27 07:10:00,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-08-27 07:10:00,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-08-27 07:10:00,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:00,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-08-27 07:10:00,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2023-08-27 07:10:00,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 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) [2023-08-27 07:10:00,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 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) [2023-08-27 07:10:00,981 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 67 flow. Second operand 6 states and 433 transitions. [2023-08-27 07:10:00,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 222 flow [2023-08-27 07:10:00,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 201 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 07:10:00,984 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 71 flow [2023-08-27 07:10:00,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-08-27 07:10:00,985 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-27 07:10:00,985 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 71 flow [2023-08-27 07:10:00,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 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) [2023-08-27 07:10:00,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:00,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:00,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 07:10:00,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 07:10:00,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1820900415, now seen corresponding path program 3 times [2023-08-27 07:10:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:00,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242037898] [2023-08-27 07:10:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:01,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:01,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242037898] [2023-08-27 07:10:01,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242037898] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:01,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:01,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:10:01,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065712835] [2023-08-27 07:10:01,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:01,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:10:01,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:01,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:10:01,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:10:01,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 160 [2023-08-27 07:10:01,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-27 07:10:01,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:01,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 160 [2023-08-27 07:10:01,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:01,365 INFO L124 PetriNetUnfolderBase]: 17/49 cut-off events. [2023-08-27 07:10:01,365 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-27 07:10:01,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 49 events. 17/49 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 1 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 156. Up to 23 conditions per place. [2023-08-27 07:10:01,367 INFO L140 encePairwiseOnDemand]: 155/160 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-27 07:10:01,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 145 flow [2023-08-27 07:10:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:10:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:10:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2023-08-27 07:10:01,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725 [2023-08-27 07:10:01,369 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2023-08-27 07:10:01,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2023-08-27 07:10:01,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:01,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2023-08-27 07:10:01,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2023-08-27 07:10:01,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-08-27 07:10:01,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-08-27 07:10:01,372 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 71 flow. Second operand 5 states and 378 transitions. [2023-08-27 07:10:01,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 145 flow [2023-08-27 07:10:01,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 136 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 07:10:01,375 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-27 07:10:01,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-27 07:10:01,376 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-27 07:10:01,376 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-27 07:10:01,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-27 07:10:01,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2023-08-27 07:10:01,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-27 07:10:01,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-27 07:10:01,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-27 07:10:01,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 07:10:01,386 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2023-08-27 07:10:01,388 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 07:10:01,388 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 07:10:01,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:10:01 BasicIcfg [2023-08-27 07:10:01,391 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 07:10:01,392 INFO L158 Benchmark]: Toolchain (without parser) took 5149.54ms. Allocated memory was 377.5MB in the beginning and 492.8MB in the end (delta: 115.3MB). Free memory was 353.9MB in the beginning and 389.1MB in the end (delta: -35.2MB). Peak memory consumption was 82.6MB. Max. memory is 16.0GB. [2023-08-27 07:10:01,394 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 377.5MB. Free memory is still 355.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 07:10:01,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.24ms. Allocated memory is still 377.5MB. Free memory was 353.9MB in the beginning and 343.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 07:10:01,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.24ms. Allocated memory is still 377.5MB. Free memory was 343.6MB in the beginning and 341.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 07:10:01,396 INFO L158 Benchmark]: Boogie Preprocessor took 30.88ms. Allocated memory is still 377.5MB. Free memory was 341.5MB in the beginning and 340.7MB in the end (delta: 812.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 07:10:01,397 INFO L158 Benchmark]: RCFGBuilder took 428.38ms. Allocated memory is still 377.5MB. Free memory was 340.7MB in the beginning and 326.2MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 07:10:01,397 INFO L158 Benchmark]: TraceAbstraction took 4460.51ms. Allocated memory was 377.5MB in the beginning and 492.8MB in the end (delta: 115.3MB). Free memory was 325.3MB in the beginning and 389.1MB in the end (delta: -63.8MB). Peak memory consumption was 53.3MB. Max. memory is 16.0GB. [2023-08-27 07:10:01,402 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 377.5MB. Free memory is still 355.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 185.24ms. Allocated memory is still 377.5MB. Free memory was 353.9MB in the beginning and 343.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.24ms. Allocated memory is still 377.5MB. Free memory was 343.6MB in the beginning and 341.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.88ms. Allocated memory is still 377.5MB. Free memory was 341.5MB in the beginning and 340.7MB in the end (delta: 812.8kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 428.38ms. Allocated memory is still 377.5MB. Free memory was 340.7MB in the beginning and 326.2MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4460.51ms. Allocated memory was 377.5MB in the beginning and 492.8MB in the end (delta: 115.3MB). Free memory was 325.3MB in the beginning and 389.1MB in the end (delta: -63.8MB). Peak memory consumption was 53.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 85 PlacesBefore, 26 PlacesAfterwards, 77 TransitionsBefore, 16 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 69 TotalNumberOfCompositions, 477 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 419, independent: 407, independent conditional: 0, independent unconditional: 407, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 198, independent: 196, independent conditional: 0, independent unconditional: 196, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 419, independent: 211, independent conditional: 0, independent unconditional: 211, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 198, unknown conditional: 0, unknown unconditional: 198] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 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: 4.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 311 IncrementalHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 311 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=2, InterpolantAutomatonStates: 16, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 07:10:01,426 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...