/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 22:42:47,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 22:42:47,790 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 [2023-08-23 22:42:47,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 22:42:47,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 22:42:47,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 22:42:47,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 22:42:47,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 22:42:47,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 22:42:47,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 22:42:47,829 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 22:42:47,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 22:42:47,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 22:42:47,831 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 22:42:47,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 22:42:47,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 22:42:47,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 22:42:47,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 22:42:47,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 22:42:47,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 22:42:47,832 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 22:42:47,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 22:42:47,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 22:42:47,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 22:42:47,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 22:42:47,834 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 22:42:47,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 22:42:47,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 22:42:47,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 22:42:47,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 22:42:47,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 22:42:47,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 22:42:47,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 22:42:47,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 22:42:47,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 22:42:47,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 22:42:48,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 22:42:48,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 22:42:48,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 22:42:48,132 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 22:42:48,133 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 22:42:48,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2023-08-23 22:42:49,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 22:42:49,527 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 22:42:49,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2023-08-23 22:42:49,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ba24ed3/9ff878ee943446558e76f5338f858d06/FLAG1d55d4433 [2023-08-23 22:42:49,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ba24ed3/9ff878ee943446558e76f5338f858d06 [2023-08-23 22:42:49,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 22:42:49,563 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 22:42:49,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 22:42:49,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 22:42:49,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 22:42:49,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 10:42:49" (1/1) ... [2023-08-23 22:42:49,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f8beaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:49, skipping insertion in model container [2023-08-23 22:42:49,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 10:42:49" (1/1) ... [2023-08-23 22:42:49,624 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 22:42:49,791 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-23 22:42:49,936 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-atomic/lamport.i[32156,32169] [2023-08-23 22:42:49,942 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-atomic/lamport.i[34083,34096] [2023-08-23 22:42:49,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 22:42:49,962 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 22:42:49,983 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-23 22:42:49,988 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-23 22:42:49,997 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-23 22:42:50,008 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-atomic/lamport.i[32156,32169] [2023-08-23 22:42:50,012 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-atomic/lamport.i[34083,34096] [2023-08-23 22:42:50,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 22:42:50,054 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 22:42:50,054 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 22:42:50,054 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 22:42:50,060 INFO L206 MainTranslator]: Completed translation [2023-08-23 22:42:50,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50 WrapperNode [2023-08-23 22:42:50,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 22:42:50,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 22:42:50,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 22:42:50,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 22:42:50,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,116 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-08-23 22:42:50,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 22:42:50,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 22:42:50,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 22:42:50,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 22:42:50,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 22:42:50,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 22:42:50,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 22:42:50,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 22:42:50,169 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (1/1) ... [2023-08-23 22:42:50,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 22:42:50,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 22:42:50,198 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) [2023-08-23 22:42:50,215 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 [2023-08-23 22:42:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-23 22:42:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-23 22:42:50,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-23 22:42:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-23 22:42:50,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-23 22:42:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 22:42:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 22:42:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 22:42:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 22:42:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 22:42:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 22:42:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 22:42:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 22:42:50,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 22:42:50,238 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 22:42:50,343 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 22:42:50,344 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 22:42:50,497 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 22:42:50,503 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 22:42:50,504 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-23 22:42:50,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 10:42:50 BoogieIcfgContainer [2023-08-23 22:42:50,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 22:42:50,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 22:42:50,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 22:42:50,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 22:42:50,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 10:42:49" (1/3) ... [2023-08-23 22:42:50,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d4172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 10:42:50, skipping insertion in model container [2023-08-23 22:42:50,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:42:50" (2/3) ... [2023-08-23 22:42:50,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d4172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 10:42:50, skipping insertion in model container [2023-08-23 22:42:50,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 10:42:50" (3/3) ... [2023-08-23 22:42:50,513 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2023-08-23 22:42:50,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 22:42:50,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-23 22:42:50,529 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 22:42:50,612 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-23 22:42:50,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 131 transitions, 278 flow [2023-08-23 22:42:50,739 INFO L124 PetriNetUnfolderBase]: 24/129 cut-off events. [2023-08-23 22:42:50,739 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 22:42:50,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 24/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2023-08-23 22:42:50,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 131 transitions, 278 flow [2023-08-23 22:42:50,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 120 transitions, 249 flow [2023-08-23 22:42:50,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 22:42:50,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 120 transitions, 249 flow [2023-08-23 22:42:50,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 120 transitions, 249 flow [2023-08-23 22:42:50,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 120 transitions, 249 flow [2023-08-23 22:42:50,799 INFO L124 PetriNetUnfolderBase]: 24/120 cut-off events. [2023-08-23 22:42:50,799 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-23 22:42:50,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 120 events. 24/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 260 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2023-08-23 22:42:50,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 5192 [2023-08-23 22:42:52,508 INFO L134 LiptonReduction]: Checked pairs total: 13930 [2023-08-23 22:42:52,508 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-08-23 22:42:52,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 22:42:52,524 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;@3360df16, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 22:42:52,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-23 22:42:52,528 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 22:42:52,528 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-23 22:42:52,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 22:42:52,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:52,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-23 22:42:52,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:52,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash 17041645, now seen corresponding path program 1 times [2023-08-23 22:42:52,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:52,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071556603] [2023-08-23 22:42:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:52,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:52,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:52,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071556603] [2023-08-23 22:42:52,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071556603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:52,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:52,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 22:42:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468198761] [2023-08-23 22:42:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:52,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-23 22:42:52,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:52,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-23 22:42:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-23 22:42:52,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 204 [2023-08-23 22:42:52,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 135 flow. Second operand has 2 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 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) [2023-08-23 22:42:52,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:52,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 204 [2023-08-23 22:42:52,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:52,919 INFO L124 PetriNetUnfolderBase]: 868/1441 cut-off events. [2023-08-23 22:42:52,919 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-23 22:42:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2725 conditions, 1441 events. 868/1441 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7152 event pairs, 458 based on Foata normal form. 22/1040 useless extension candidates. Maximal degree in co-relation 2570. Up to 1242 conditions per place. [2023-08-23 22:42:52,934 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 40 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-08-23 22:42:52,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 205 flow [2023-08-23 22:42:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-23 22:42:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-23 22:42:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 275 transitions. [2023-08-23 22:42:52,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6740196078431373 [2023-08-23 22:42:52,949 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 275 transitions. [2023-08-23 22:42:52,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 275 transitions. [2023-08-23 22:42:52,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:52,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 275 transitions. [2023-08-23 22:42:52,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 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) [2023-08-23 22:42:52,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 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) [2023-08-23 22:42:52,964 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 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) [2023-08-23 22:42:52,966 INFO L175 Difference]: Start difference. First operand has 53 places, 63 transitions, 135 flow. Second operand 2 states and 275 transitions. [2023-08-23 22:42:52,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 205 flow [2023-08-23 22:42:52,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 22:42:52,972 INFO L231 Difference]: Finished difference. Result has 51 places, 58 transitions, 120 flow [2023-08-23 22:42:52,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=58} [2023-08-23 22:42:52,978 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-08-23 22:42:52,978 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 58 transitions, 120 flow [2023-08-23 22:42:52,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 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) [2023-08-23 22:42:52,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:52,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:42:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 22:42:52,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:52,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:52,986 INFO L85 PathProgramCache]: Analyzing trace with hash 919532292, now seen corresponding path program 1 times [2023-08-23 22:42:52,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:52,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953928256] [2023-08-23 22:42:52,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:52,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:53,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953928256] [2023-08-23 22:42:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953928256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 22:42:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138587915] [2023-08-23 22:42:53,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:53,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 22:42:53,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 22:42:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 22:42:53,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 204 [2023-08-23 22:42:53,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2023-08-23 22:42:53,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:53,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 204 [2023-08-23 22:42:53,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:53,296 INFO L124 PetriNetUnfolderBase]: 979/1636 cut-off events. [2023-08-23 22:42:53,296 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-23 22:42:53,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1636 events. 979/1636 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8276 event pairs, 345 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 3093. Up to 992 conditions per place. [2023-08-23 22:42:53,304 INFO L140 encePairwiseOnDemand]: 197/204 looper letters, 57 selfloop transitions, 5 changer transitions 2/80 dead transitions. [2023-08-23 22:42:53,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 293 flow [2023-08-23 22:42:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 22:42:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 22:42:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-23 22:42:53,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2023-08-23 22:42:53,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-23 22:42:53,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-23 22:42:53,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:53,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-23 22:42:53,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-08-23 22:42:53,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2023-08-23 22:42:53,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2023-08-23 22:42:53,311 INFO L175 Difference]: Start difference. First operand has 51 places, 58 transitions, 120 flow. Second operand 3 states and 390 transitions. [2023-08-23 22:42:53,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 293 flow [2023-08-23 22:42:53,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 293 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 22:42:53,313 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 152 flow [2023-08-23 22:42:53,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-08-23 22:42:53,314 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-23 22:42:53,314 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 152 flow [2023-08-23 22:42:53,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2023-08-23 22:42:53,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:53,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:42:53,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 22:42:53,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:53,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1629439228, now seen corresponding path program 1 times [2023-08-23 22:42:53,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:53,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214848980] [2023-08-23 22:42:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:53,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:53,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214848980] [2023-08-23 22:42:53,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214848980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:53,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:53,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 22:42:53,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436225008] [2023-08-23 22:42:53,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:53,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 22:42:53,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:53,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 22:42:53,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 22:42:53,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 204 [2023-08-23 22:42:53,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2023-08-23 22:42:53,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:53,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 204 [2023-08-23 22:42:53,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:53,514 INFO L124 PetriNetUnfolderBase]: 857/1450 cut-off events. [2023-08-23 22:42:53,514 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2023-08-23 22:42:53,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 1450 events. 857/1450 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7175 event pairs, 349 based on Foata normal form. 36/1171 useless extension candidates. Maximal degree in co-relation 2931. Up to 985 conditions per place. [2023-08-23 22:42:53,520 INFO L140 encePairwiseOnDemand]: 197/204 looper letters, 52 selfloop transitions, 4 changer transitions 5/77 dead transitions. [2023-08-23 22:42:53,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 309 flow [2023-08-23 22:42:53,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 22:42:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 22:42:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-08-23 22:42:53,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2023-08-23 22:42:53,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-08-23 22:42:53,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-08-23 22:42:53,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:53,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-08-23 22:42:53,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 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) [2023-08-23 22:42:53,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2023-08-23 22:42:53,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2023-08-23 22:42:53,526 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 152 flow. Second operand 3 states and 388 transitions. [2023-08-23 22:42:53,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 309 flow [2023-08-23 22:42:53,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 22:42:53,529 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 156 flow [2023-08-23 22:42:53,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-23 22:42:53,530 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-23 22:42:53,530 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 156 flow [2023-08-23 22:42:53,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2023-08-23 22:42:53,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:53,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:42:53,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 22:42:53,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:53,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1838724814, now seen corresponding path program 1 times [2023-08-23 22:42:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799875704] [2023-08-23 22:42:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:53,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:53,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:53,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799875704] [2023-08-23 22:42:53,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799875704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:53,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:53,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 22:42:53,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370202093] [2023-08-23 22:42:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:53,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 22:42:53,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 22:42:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 22:42:53,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 204 [2023-08-23 22:42:53,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2023-08-23 22:42:53,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:53,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 204 [2023-08-23 22:42:53,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:53,857 INFO L124 PetriNetUnfolderBase]: 1766/2907 cut-off events. [2023-08-23 22:42:53,857 INFO L125 PetriNetUnfolderBase]: For 706/706 co-relation queries the response was YES. [2023-08-23 22:42:53,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6060 conditions, 2907 events. 1766/2907 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15399 event pairs, 476 based on Foata normal form. 0/2424 useless extension candidates. Maximal degree in co-relation 6054. Up to 1508 conditions per place. [2023-08-23 22:42:53,869 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 73 selfloop transitions, 4 changer transitions 12/100 dead transitions. [2023-08-23 22:42:53,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 448 flow [2023-08-23 22:42:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 22:42:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 22:42:53,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-08-23 22:42:53,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6209150326797386 [2023-08-23 22:42:53,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-08-23 22:42:53,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-08-23 22:42:53,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:53,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-08-23 22:42:53,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-23 22:42:53,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2023-08-23 22:42:53,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2023-08-23 22:42:53,874 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 156 flow. Second operand 3 states and 380 transitions. [2023-08-23 22:42:53,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 448 flow [2023-08-23 22:42:53,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 100 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 22:42:53,880 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 186 flow [2023-08-23 22:42:53,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-08-23 22:42:53,881 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-23 22:42:53,881 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 186 flow [2023-08-23 22:42:53,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2023-08-23 22:42:53,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:53,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:42:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 22:42:53,882 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:53,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1648424276, now seen corresponding path program 2 times [2023-08-23 22:42:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:53,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077694435] [2023-08-23 22:42:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:53,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077694435] [2023-08-23 22:42:53,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077694435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:53,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:53,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 22:42:53,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749860185] [2023-08-23 22:42:53,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:53,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 22:42:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 22:42:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 22:42:53,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 204 [2023-08-23 22:42:53,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2023-08-23 22:42:53,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:53,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 204 [2023-08-23 22:42:53,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:54,503 INFO L124 PetriNetUnfolderBase]: 4224/7046 cut-off events. [2023-08-23 22:42:54,503 INFO L125 PetriNetUnfolderBase]: For 1206/1210 co-relation queries the response was YES. [2023-08-23 22:42:54,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14911 conditions, 7046 events. 4224/7046 cut-off events. For 1206/1210 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 43674 event pairs, 908 based on Foata normal form. 44/5777 useless extension candidates. Maximal degree in co-relation 14904. Up to 2506 conditions per place. [2023-08-23 22:42:54,533 INFO L140 encePairwiseOnDemand]: 198/204 looper letters, 129 selfloop transitions, 8 changer transitions 3/156 dead transitions. [2023-08-23 22:42:54,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 156 transitions, 724 flow [2023-08-23 22:42:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 22:42:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 22:42:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 674 transitions. [2023-08-23 22:42:54,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2023-08-23 22:42:54,536 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 674 transitions. [2023-08-23 22:42:54,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 674 transitions. [2023-08-23 22:42:54,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:54,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 674 transitions. [2023-08-23 22:42:54,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 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) [2023-08-23 22:42:54,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:54,540 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:54,541 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 186 flow. Second operand 5 states and 674 transitions. [2023-08-23 22:42:54,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 156 transitions, 724 flow [2023-08-23 22:42:54,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 156 transitions, 710 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 22:42:54,548 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 250 flow [2023-08-23 22:42:54,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2023-08-23 22:42:54,549 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-08-23 22:42:54,549 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 250 flow [2023-08-23 22:42:54,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2023-08-23 22:42:54,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:54,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:42:54,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 22:42:54,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:54,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:54,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1149333006, now seen corresponding path program 3 times [2023-08-23 22:42:54,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:54,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563586845] [2023-08-23 22:42:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:54,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:54,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563586845] [2023-08-23 22:42:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563586845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:54,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 22:42:54,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26872014] [2023-08-23 22:42:54,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:54,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 22:42:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 22:42:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 22:42:54,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 204 [2023-08-23 22:42:54,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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) [2023-08-23 22:42:54,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:54,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 204 [2023-08-23 22:42:54,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:55,265 INFO L124 PetriNetUnfolderBase]: 4699/7986 cut-off events. [2023-08-23 22:42:55,265 INFO L125 PetriNetUnfolderBase]: For 2799/2939 co-relation queries the response was YES. [2023-08-23 22:42:55,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18050 conditions, 7986 events. 4699/7986 cut-off events. For 2799/2939 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 51282 event pairs, 1530 based on Foata normal form. 254/7279 useless extension candidates. Maximal degree in co-relation 18040. Up to 4234 conditions per place. [2023-08-23 22:42:55,302 INFO L140 encePairwiseOnDemand]: 190/204 looper letters, 91 selfloop transitions, 16 changer transitions 16/140 dead transitions. [2023-08-23 22:42:55,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 140 transitions, 701 flow [2023-08-23 22:42:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 22:42:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 22:42:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2023-08-23 22:42:55,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598039215686275 [2023-08-23 22:42:55,305 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2023-08-23 22:42:55,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2023-08-23 22:42:55,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:55,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2023-08-23 22:42:55,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 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) [2023-08-23 22:42:55,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:55,309 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:55,309 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 250 flow. Second operand 5 states and 571 transitions. [2023-08-23 22:42:55,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 140 transitions, 701 flow [2023-08-23 22:42:55,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 140 transitions, 701 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 22:42:55,320 INFO L231 Difference]: Finished difference. Result has 71 places, 83 transitions, 377 flow [2023-08-23 22:42:55,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=71, PETRI_TRANSITIONS=83} [2023-08-23 22:42:55,321 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-23 22:42:55,321 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 83 transitions, 377 flow [2023-08-23 22:42:55,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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) [2023-08-23 22:42:55,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:55,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:42:55,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 22:42:55,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:55,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1053351814, now seen corresponding path program 4 times [2023-08-23 22:42:55,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:55,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896205995] [2023-08-23 22:42:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:55,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:55,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:55,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896205995] [2023-08-23 22:42:55,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896205995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:55,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:55,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 22:42:55,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118435221] [2023-08-23 22:42:55,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:55,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 22:42:55,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 22:42:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 22:42:55,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 204 [2023-08-23 22:42:55,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2023-08-23 22:42:55,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:55,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 204 [2023-08-23 22:42:55,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:55,997 INFO L124 PetriNetUnfolderBase]: 3922/7161 cut-off events. [2023-08-23 22:42:55,997 INFO L125 PetriNetUnfolderBase]: For 5070/5486 co-relation queries the response was YES. [2023-08-23 22:42:56,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18818 conditions, 7161 events. 3922/7161 cut-off events. For 5070/5486 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 48665 event pairs, 796 based on Foata normal form. 260/6789 useless extension candidates. Maximal degree in co-relation 18804. Up to 2029 conditions per place. [2023-08-23 22:42:56,028 INFO L140 encePairwiseOnDemand]: 198/204 looper letters, 109 selfloop transitions, 10 changer transitions 38/177 dead transitions. [2023-08-23 22:42:56,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 177 transitions, 1099 flow [2023-08-23 22:42:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 22:42:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 22:42:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 665 transitions. [2023-08-23 22:42:56,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6519607843137255 [2023-08-23 22:42:56,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 665 transitions. [2023-08-23 22:42:56,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 665 transitions. [2023-08-23 22:42:56,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:56,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 665 transitions. [2023-08-23 22:42:56,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 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) [2023-08-23 22:42:56,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:56,034 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:56,035 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 377 flow. Second operand 5 states and 665 transitions. [2023-08-23 22:42:56,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 177 transitions, 1099 flow [2023-08-23 22:42:56,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 177 transitions, 1079 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-23 22:42:56,045 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 406 flow [2023-08-23 22:42:56,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2023-08-23 22:42:56,046 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2023-08-23 22:42:56,046 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 406 flow [2023-08-23 22:42:56,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2023-08-23 22:42:56,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:56,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:42:56,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 22:42:56,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:56,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:56,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1941517795, now seen corresponding path program 1 times [2023-08-23 22:42:56,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:56,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690803113] [2023-08-23 22:42:56,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:56,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:56,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690803113] [2023-08-23 22:42:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690803113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:56,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:56,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 22:42:56,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505620242] [2023-08-23 22:42:56,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:56,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 22:42:56,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:56,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 22:42:56,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 22:42:56,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 204 [2023-08-23 22:42:56,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-08-23 22:42:56,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:56,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 204 [2023-08-23 22:42:56,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:56,530 INFO L124 PetriNetUnfolderBase]: 2621/4902 cut-off events. [2023-08-23 22:42:56,530 INFO L125 PetriNetUnfolderBase]: For 4323/4634 co-relation queries the response was YES. [2023-08-23 22:42:56,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12665 conditions, 4902 events. 2621/4902 cut-off events. For 4323/4634 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 31534 event pairs, 940 based on Foata normal form. 176/4661 useless extension candidates. Maximal degree in co-relation 12648. Up to 2436 conditions per place. [2023-08-23 22:42:56,551 INFO L140 encePairwiseOnDemand]: 197/204 looper letters, 45 selfloop transitions, 3 changer transitions 44/119 dead transitions. [2023-08-23 22:42:56,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 721 flow [2023-08-23 22:42:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 22:42:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 22:42:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-08-23 22:42:56,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901960784313726 [2023-08-23 22:42:56,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-08-23 22:42:56,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-08-23 22:42:56,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:56,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-08-23 22:42:56,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 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) [2023-08-23 22:42:56,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:56,557 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:56,557 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 406 flow. Second operand 5 states and 602 transitions. [2023-08-23 22:42:56,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 721 flow [2023-08-23 22:42:56,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 119 transitions, 689 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-08-23 22:42:56,565 INFO L231 Difference]: Finished difference. Result has 84 places, 66 transitions, 323 flow [2023-08-23 22:42:56,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=84, PETRI_TRANSITIONS=66} [2023-08-23 22:42:56,568 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2023-08-23 22:42:56,569 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 66 transitions, 323 flow [2023-08-23 22:42:56,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-08-23 22:42:56,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:42:56,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:42:56,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 22:42:56,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 22:42:56,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:42:56,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1571881625, now seen corresponding path program 1 times [2023-08-23 22:42:56,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:42:56,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237551216] [2023-08-23 22:42:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:42:56,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:42:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:42:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:42:56,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:42:56,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237551216] [2023-08-23 22:42:56,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237551216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:42:56,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:42:56,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 22:42:56,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819341004] [2023-08-23 22:42:56,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:42:56,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 22:42:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:42:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 22:42:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 22:42:56,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 204 [2023-08-23 22:42:56,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 66 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-08-23 22:42:56,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:42:56,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 204 [2023-08-23 22:42:56,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:42:56,833 INFO L124 PetriNetUnfolderBase]: 1062/2143 cut-off events. [2023-08-23 22:42:56,833 INFO L125 PetriNetUnfolderBase]: For 2677/2847 co-relation queries the response was YES. [2023-08-23 22:42:56,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 2143 events. 1062/2143 cut-off events. For 2677/2847 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12773 event pairs, 365 based on Foata normal form. 90/2071 useless extension candidates. Maximal degree in co-relation 6014. Up to 1027 conditions per place. [2023-08-23 22:42:56,843 INFO L140 encePairwiseOnDemand]: 198/204 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2023-08-23 22:42:56,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 559 flow [2023-08-23 22:42:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 22:42:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 22:42:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-08-23 22:42:56,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2023-08-23 22:42:56,845 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-08-23 22:42:56,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-08-23 22:42:56,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:42:56,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-08-23 22:42:56,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2023-08-23 22:42:56,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:56,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-23 22:42:56,849 INFO L175 Difference]: Start difference. First operand has 84 places, 66 transitions, 323 flow. Second operand 5 states and 590 transitions. [2023-08-23 22:42:56,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 559 flow [2023-08-23 22:42:56,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 527 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-08-23 22:42:56,858 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2023-08-23 22:42:56,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2023-08-23 22:42:56,859 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-23 22:42:56,859 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2023-08-23 22:42:56,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-08-23 22:42:56,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-23 22:42:56,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-23 22:42:56,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-23 22:42:56,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-23 22:42:56,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-23 22:42:56,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-23 22:42:56,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 22:42:56,863 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2023-08-23 22:42:56,867 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 22:42:56,867 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 22:42:56,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 10:42:56 BasicIcfg [2023-08-23 22:42:56,870 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 22:42:56,870 INFO L158 Benchmark]: Toolchain (without parser) took 7306.87ms. Allocated memory was 331.4MB in the beginning and 497.0MB in the end (delta: 165.7MB). Free memory was 306.0MB in the beginning and 319.9MB in the end (delta: -13.8MB). Peak memory consumption was 152.5MB. Max. memory is 16.0GB. [2023-08-23 22:42:56,870 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 331.4MB. Free memory is still 308.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 22:42:56,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.27ms. Allocated memory is still 331.4MB. Free memory was 306.0MB in the beginning and 285.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-23 22:42:56,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.74ms. Allocated memory is still 331.4MB. Free memory was 285.1MB in the beginning and 283.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 22:42:56,871 INFO L158 Benchmark]: Boogie Preprocessor took 49.69ms. Allocated memory is still 331.4MB. Free memory was 283.3MB in the beginning and 281.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 22:42:56,872 INFO L158 Benchmark]: RCFGBuilder took 337.83ms. Allocated memory is still 331.4MB. Free memory was 281.6MB in the beginning and 266.2MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-23 22:42:56,872 INFO L158 Benchmark]: TraceAbstraction took 6361.87ms. Allocated memory was 331.4MB in the beginning and 497.0MB in the end (delta: 165.7MB). Free memory was 265.5MB in the beginning and 319.9MB in the end (delta: -54.4MB). Peak memory consumption was 112.7MB. Max. memory is 16.0GB. [2023-08-23 22:42:56,873 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 331.4MB. Free memory is still 308.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 494.27ms. Allocated memory is still 331.4MB. Free memory was 306.0MB in the beginning and 285.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.74ms. Allocated memory is still 331.4MB. Free memory was 285.1MB in the beginning and 283.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.69ms. Allocated memory is still 331.4MB. Free memory was 283.3MB in the beginning and 281.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 337.83ms. Allocated memory is still 331.4MB. Free memory was 281.6MB in the beginning and 266.2MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 6361.87ms. Allocated memory was 331.4MB in the beginning and 497.0MB in the end (delta: 165.7MB). Free memory was 265.5MB in the beginning and 319.9MB in the end (delta: -54.4MB). Peak memory consumption was 112.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 103 PlacesBefore, 53 PlacesAfterwards, 120 TransitionsBefore, 63 TransitionsAfterwards, 5192 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 73 TotalNumberOfCompositions, 13930 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5692, independent: 5361, independent conditional: 0, independent unconditional: 5361, dependent: 331, dependent conditional: 0, dependent unconditional: 331, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2414, independent: 2368, independent conditional: 0, independent unconditional: 2368, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5692, independent: 2993, independent conditional: 0, independent unconditional: 2993, dependent: 285, dependent conditional: 0, dependent unconditional: 285, unknown: 2414, unknown conditional: 0, unknown unconditional: 2414] , Statistics on independence cache: Total cache size (in pairs): 376, Positive cache size: 341, Positive conditional cache size: 0, Positive unconditional cache size: 341, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: 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 5 procedures, 176 locations, 6 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: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 356 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1267 IncrementalHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 38 mSDtfsCounter, 1267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=406occurred in iteration=7, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 237 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-23 22:42:56,897 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...