/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 PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:46:31,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:46:31,419 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 [2023-08-24 11:46:31,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:46:31,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:46:31,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:46:31,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:46:31,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:46:31,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:46:31,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:46:31,446 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:46:31,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:46:31,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:46:31,447 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:46:31,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:46:31,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:46:31,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:46:31,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:46:31,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:46:31,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:46:31,450 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:46:31,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:46:31,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:46:31,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:46:31,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:46:31,454 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:46:31,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:46:31,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:46:31,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:46:31,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:46:31,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:46:31,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:46:31,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:46:31,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:46:31,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:46:31,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:46:31,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:46:31,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:46:31,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:46:31,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:46:31,824 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:46:31,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:46:33,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:46:33,365 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:46:33,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:46:33,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52117cf62/208116a30b1e482eb8cfb99010f83732/FLAG0c377dbe8 [2023-08-24 11:46:33,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52117cf62/208116a30b1e482eb8cfb99010f83732 [2023-08-24 11:46:33,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:46:33,400 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:46:33,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:46:33,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:46:33,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:46:33,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341e2185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33, skipping insertion in model container [2023-08-24 11:46:33,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,460 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:46:33,621 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 11:46:33,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:46:33,810 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:46:33,825 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 11:46:33,844 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:46:33,847 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:46:33,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:46:33,908 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:46:33,908 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:46:33,915 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:46:33,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33 WrapperNode [2023-08-24 11:46:33,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:46:33,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:46:33,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:46:33,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:46:33,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,966 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-24 11:46:33,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:46:33,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:46:33,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:46:33,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:46:33,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:33,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:34,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:46:34,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:46:34,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:46:34,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:46:34,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (1/1) ... [2023-08-24 11:46:34,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:46:34,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:46:34,042 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) [2023-08-24 11:46:34,067 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 [2023-08-24 11:46:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:46:34,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:46:34,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:46:34,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:46:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:46:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:46:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:46:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:46:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:46:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 11:46:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 11:46:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:46:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:46:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:46:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:46:34,085 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:46:34,239 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:46:34,241 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:46:34,459 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:46:34,465 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:46:34,466 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:46:34,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:46:34 BoogieIcfgContainer [2023-08-24 11:46:34,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:46:34,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:46:34,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:46:34,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:46:34,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:46:33" (1/3) ... [2023-08-24 11:46:34,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cccbaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:46:34, skipping insertion in model container [2023-08-24 11:46:34,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:46:33" (2/3) ... [2023-08-24 11:46:34,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cccbaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:46:34, skipping insertion in model container [2023-08-24 11:46:34,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:46:34" (3/3) ... [2023-08-24 11:46:34,478 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:46:34,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:46:34,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:46:34,496 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:46:34,559 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:46:34,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 11:46:34,661 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-08-24 11:46:34,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:46:34,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 11:46:34,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 11:46:34,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-24 11:46:34,673 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:46:34,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 11:46:34,684 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 11:46:34,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-24 11:46:34,701 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-08-24 11:46:34,701 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:46:34,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 11:46:34,703 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 11:46:36,633 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-24 11:46:36,634 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-24 11:46:36,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:46:36,651 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;@7a8a271c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:46:36,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 11:46:36,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:46:36,657 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 11:46:36,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:46:36,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:36,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:36,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:46:36,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-08-24 11:46:36,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:36,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58941843] [2023-08-24 11:46:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:46:37,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:37,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58941843] [2023-08-24 11:46:37,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58941843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:37,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:37,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:46:37,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115921780] [2023-08-24 11:46:37,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:46:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:37,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:46:37,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:46:37,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:46:37,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2023-08-24 11:46:37,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:37,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:46:37,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:37,341 INFO L124 PetriNetUnfolderBase]: 398/674 cut-off events. [2023-08-24 11:46:37,342 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-24 11:46:37,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 674 events. 398/674 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3179 event pairs, 144 based on Foata normal form. 31/705 useless extension candidates. Maximal degree in co-relation 1362. Up to 414 conditions per place. [2023-08-24 11:46:37,354 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-24 11:46:37,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-08-24 11:46:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:46:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:46:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-24 11:46:37,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-24 11:46:37,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-24 11:46:37,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-24 11:46:37,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:37,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-24 11:46:37,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-08-24 11:46:37,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-08-24 11:46:37,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-08-24 11:46:37,388 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 237 transitions. [2023-08-24 11:46:37,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-08-24 11:46:37,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:46:37,392 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-08-24 11:46:37,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-24 11:46:37,397 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 11:46:37,398 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-08-24 11:46:37,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2023-08-24 11:46:37,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:37,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:37,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:46:37,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:46:37,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-08-24 11:46:37,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:37,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143021784] [2023-08-24 11:46:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:37,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:46:37,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:37,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143021784] [2023-08-24 11:46:37,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143021784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:37,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:37,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:46:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273763871] [2023-08-24 11:46:37,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:37,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:46:37,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:46:37,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:46:37,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:46:37,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-08-24 11:46:37,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:37,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:46:37,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:37,742 INFO L124 PetriNetUnfolderBase]: 354/602 cut-off events. [2023-08-24 11:46:37,742 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-08-24 11:46:37,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 602 events. 354/602 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2717 event pairs, 60 based on Foata normal form. 10/611 useless extension candidates. Maximal degree in co-relation 1617. Up to 299 conditions per place. [2023-08-24 11:46:37,748 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 9 changer transitions 0/40 dead transitions. [2023-08-24 11:46:37,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 228 flow [2023-08-24 11:46:37,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:46:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:46:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-08-24 11:46:37,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-08-24 11:46:37,754 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-08-24 11:46:37,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-08-24 11:46:37,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:37,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-08-24 11:46:37,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2023-08-24 11:46:37,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-24 11:46:37,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-24 11:46:37,760 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 311 transitions. [2023-08-24 11:46:37,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 228 flow [2023-08-24 11:46:37,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:46:37,765 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-08-24 11:46:37,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-24 11:46:37,766 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-24 11:46:37,768 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-08-24 11:46:37,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-08-24 11:46:37,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:37,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:37,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:46:37,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:46:37,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash 354574968, now seen corresponding path program 1 times [2023-08-24 11:46:37,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:37,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251259975] [2023-08-24 11:46:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:37,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:46:37,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:37,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251259975] [2023-08-24 11:46:37,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251259975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:37,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:37,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:46:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322296145] [2023-08-24 11:46:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:46:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:46:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:46:37,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:46:37,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-08-24 11:46:37,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:37,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:46:37,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:38,011 INFO L124 PetriNetUnfolderBase]: 368/627 cut-off events. [2023-08-24 11:46:38,011 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2023-08-24 11:46:38,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 627 events. 368/627 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2877 event pairs, 86 based on Foata normal form. 32/658 useless extension candidates. Maximal degree in co-relation 1810. Up to 340 conditions per place. [2023-08-24 11:46:38,016 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 27 selfloop transitions, 6 changer transitions 11/45 dead transitions. [2023-08-24 11:46:38,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 288 flow [2023-08-24 11:46:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:46:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:46:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-24 11:46:38,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418439716312057 [2023-08-24 11:46:38,018 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-24 11:46:38,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-24 11:46:38,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:38,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-24 11:46:38,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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) [2023-08-24 11:46:38,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-08-24 11:46:38,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-08-24 11:46:38,023 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 5 states and 382 transitions. [2023-08-24 11:46:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 288 flow [2023-08-24 11:46:38,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:46:38,027 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 131 flow [2023-08-24 11:46:38,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2023-08-24 11:46:38,028 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 11:46:38,028 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 131 flow [2023-08-24 11:46:38,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-08-24 11:46:38,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:38,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:38,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:46:38,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:46:38,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash 988738683, now seen corresponding path program 1 times [2023-08-24 11:46:38,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:38,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455667867] [2023-08-24 11:46:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:46:38,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:38,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455667867] [2023-08-24 11:46:38,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455667867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:38,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:38,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:46:38,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391170863] [2023-08-24 11:46:38,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:46:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:46:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:46:38,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:46:38,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-08-24 11:46:38,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:38,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:46:38,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:38,245 INFO L124 PetriNetUnfolderBase]: 173/318 cut-off events. [2023-08-24 11:46:38,245 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2023-08-24 11:46:38,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 999 conditions, 318 events. 173/318 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1218 event pairs, 40 based on Foata normal form. 4/322 useless extension candidates. Maximal degree in co-relation 980. Up to 156 conditions per place. [2023-08-24 11:46:38,248 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 26 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-24 11:46:38,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 221 flow [2023-08-24 11:46:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:46:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:46:38,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-08-24 11:46:38,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2023-08-24 11:46:38,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-08-24 11:46:38,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-08-24 11:46:38,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:38,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-08-24 11:46:38,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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) [2023-08-24 11:46:38,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-24 11:46:38,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-24 11:46:38,253 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 131 flow. Second operand 4 states and 306 transitions. [2023-08-24 11:46:38,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 221 flow [2023-08-24 11:46:38,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 207 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-24 11:46:38,259 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 134 flow [2023-08-24 11:46:38,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2023-08-24 11:46:38,260 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 11:46:38,260 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 134 flow [2023-08-24 11:46:38,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-08-24 11:46:38,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:38,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:38,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:46:38,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:46:38,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:38,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1463301153, now seen corresponding path program 1 times [2023-08-24 11:46:38,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:38,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498729036] [2023-08-24 11:46:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:38,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:46:38,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:38,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498729036] [2023-08-24 11:46:38,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498729036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:38,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:38,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:46:38,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212309193] [2023-08-24 11:46:38,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:38,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:46:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:38,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:46:38,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:46:38,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-08-24 11:46:38,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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) [2023-08-24 11:46:38,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:38,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-08-24 11:46:38,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:38,476 INFO L124 PetriNetUnfolderBase]: 221/414 cut-off events. [2023-08-24 11:46:38,476 INFO L125 PetriNetUnfolderBase]: For 688/695 co-relation queries the response was YES. [2023-08-24 11:46:38,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 414 events. 221/414 cut-off events. For 688/695 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1837 event pairs, 63 based on Foata normal form. 21/432 useless extension candidates. Maximal degree in co-relation 1262. Up to 166 conditions per place. [2023-08-24 11:46:38,479 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 21 selfloop transitions, 3 changer transitions 14/40 dead transitions. [2023-08-24 11:46:38,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 271 flow [2023-08-24 11:46:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:46:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:46:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-24 11:46:38,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-24 11:46:38,480 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-24 11:46:38,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-24 11:46:38,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:38,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-24 11:46:38,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-08-24 11:46:38,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-24 11:46:38,483 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-24 11:46:38,483 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 134 flow. Second operand 4 states and 329 transitions. [2023-08-24 11:46:38,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 271 flow [2023-08-24 11:46:38,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 246 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-24 11:46:38,486 INFO L231 Difference]: Finished difference. Result has 39 places, 17 transitions, 88 flow [2023-08-24 11:46:38,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=39, PETRI_TRANSITIONS=17} [2023-08-24 11:46:38,487 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-08-24 11:46:38,487 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 17 transitions, 88 flow [2023-08-24 11:46:38,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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) [2023-08-24 11:46:38,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:38,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:38,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:46:38,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:46:38,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1959977629, now seen corresponding path program 1 times [2023-08-24 11:46:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445820453] [2023-08-24 11:46:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:46:38,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:38,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445820453] [2023-08-24 11:46:38,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445820453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:38,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:38,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:46:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863577056] [2023-08-24 11:46:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:46:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:46:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:46:38,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:46:38,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 17 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 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) [2023-08-24 11:46:38,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:38,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:46:38,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:38,672 INFO L124 PetriNetUnfolderBase]: 76/144 cut-off events. [2023-08-24 11:46:38,672 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-08-24 11:46:38,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 144 events. 76/144 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 366 event pairs, 32 based on Foata normal form. 8/151 useless extension candidates. Maximal degree in co-relation 419. Up to 96 conditions per place. [2023-08-24 11:46:38,672 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-24 11:46:38,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 20 transitions, 124 flow [2023-08-24 11:46:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:46:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:46:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2023-08-24 11:46:38,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2023-08-24 11:46:38,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 296 transitions. [2023-08-24 11:46:38,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 296 transitions. [2023-08-24 11:46:38,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:38,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 296 transitions. [2023-08-24 11:46:38,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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) [2023-08-24 11:46:38,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-24 11:46:38,676 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-24 11:46:38,676 INFO L175 Difference]: Start difference. First operand has 39 places, 17 transitions, 88 flow. Second operand 4 states and 296 transitions. [2023-08-24 11:46:38,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 20 transitions, 124 flow [2023-08-24 11:46:38,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 90 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-08-24 11:46:38,677 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-24 11:46:38,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-24 11:46:38,678 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 11:46:38,678 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-24 11:46:38,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 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) [2023-08-24 11:46:38,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 11:46:38,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 11:46:38,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 11:46:38,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 11:46:38,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:46:38,682 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-24 11:46:38,684 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:46:38,685 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:46:38,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:46:38 BasicIcfg [2023-08-24 11:46:38,688 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:46:38,688 INFO L158 Benchmark]: Toolchain (without parser) took 5287.78ms. Allocated memory was 356.5MB in the beginning and 427.8MB in the end (delta: 71.3MB). Free memory was 331.1MB in the beginning and 317.8MB in the end (delta: 13.3MB). Peak memory consumption was 85.1MB. Max. memory is 16.0GB. [2023-08-24 11:46:38,688 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 356.5MB. Free memory is still 333.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:46:38,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.76ms. Allocated memory is still 356.5MB. Free memory was 330.6MB in the beginning and 310.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:46:38,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.06ms. Allocated memory is still 356.5MB. Free memory was 310.6MB in the beginning and 308.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:46:38,689 INFO L158 Benchmark]: Boogie Preprocessor took 40.18ms. Allocated memory is still 356.5MB. Free memory was 308.6MB in the beginning and 307.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:46:38,690 INFO L158 Benchmark]: RCFGBuilder took 461.43ms. Allocated memory is still 356.5MB. Free memory was 307.0MB in the beginning and 293.4MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 11:46:38,690 INFO L158 Benchmark]: TraceAbstraction took 4215.82ms. Allocated memory was 356.5MB in the beginning and 427.8MB in the end (delta: 71.3MB). Free memory was 292.4MB in the beginning and 317.8MB in the end (delta: -25.4MB). Peak memory consumption was 47.4MB. Max. memory is 16.0GB. [2023-08-24 11:46:38,691 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 356.5MB. Free memory is still 333.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 515.76ms. Allocated memory is still 356.5MB. Free memory was 330.6MB in the beginning and 310.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.06ms. Allocated memory is still 356.5MB. Free memory was 310.6MB in the beginning and 308.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.18ms. Allocated memory is still 356.5MB. Free memory was 308.6MB in the beginning and 307.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 461.43ms. Allocated memory is still 356.5MB. Free memory was 307.0MB in the beginning and 293.4MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4215.82ms. Allocated memory was 356.5MB in the beginning and 427.8MB in the end (delta: 71.3MB). Free memory was 292.4MB in the beginning and 317.8MB in the end (delta: -25.4MB). Peak memory consumption was 47.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1213, independent: 1136, independent conditional: 0, independent unconditional: 1136, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1213, independent: 586, independent conditional: 0, independent unconditional: 586, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data 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: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 94 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 208 IncrementalHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 12 mSDtfsCounter, 208 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=2, InterpolantAutomatonStates: 24, 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, 0.9s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2023-08-24 11:46:38,716 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...