/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:09:17,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:09:17,223 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-SemanticLbe.epf [2023-11-17 12:09:17,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:09:17,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:09:17,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:09:17,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:09:17,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:09:17,257 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:09:17,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:09:17,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:09:17,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:09:17,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:09:17,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:09:17,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:09:17,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:09:17,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:09:17,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:09:17,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:09:17,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:09:17,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:09:17,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:09:17,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:09:17,263 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:09:17,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:09:17,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:09:17,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:09:17,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:09:17,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:09:17,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:09:17,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:09:17,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:09:17,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:09:17,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:09:17,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:09:17,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:09:17,450 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:09:17,450 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:09:17,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2023-11-17 12:09:18,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:09:18,588 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:09:18,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2023-11-17 12:09:18,594 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bddebfee7/2ed8aef9426749b89de098ac51ec99e5/FLAG787635ddb [2023-11-17 12:09:18,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bddebfee7/2ed8aef9426749b89de098ac51ec99e5 [2023-11-17 12:09:18,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:09:18,610 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:09:18,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:09:18,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:09:18,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:09:18,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a348b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18, skipping insertion in model container [2023-11-17 12:09:18,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,646 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:09:18,797 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c[4478,4491] [2023-11-17 12:09:18,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:09:18,807 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:09:18,824 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c[4478,4491] [2023-11-17 12:09:18,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:09:18,830 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:09:18,830 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:09:18,835 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:09:18,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18 WrapperNode [2023-11-17 12:09:18,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:09:18,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:09:18,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:09:18,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:09:18,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,881 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 293 [2023-11-17 12:09:18,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:09:18,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:09:18,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:09:18,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:09:18,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:09:18,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:09:18,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:09:18,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:09:18,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (1/1) ... [2023-11-17 12:09:18,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:09:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:09:18,946 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) [2023-11-17 12:09:18,947 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 [2023-11-17 12:09:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:09:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:09:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:09:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:09:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:09:18,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:09:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:09:18,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:09:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:09:18,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:09:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:09:18,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:09:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:09:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-17 12:09:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-17 12:09:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-17 12:09:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-17 12:09:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:09:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:09:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:09:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:09:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:09:18,967 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:09:19,087 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:09:19,090 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:09:19,426 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:09:19,603 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:09:19,603 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 12:09:19,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:09:19 BoogieIcfgContainer [2023-11-17 12:09:19,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:09:19,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:09:19,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:09:19,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:09:19,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:09:18" (1/3) ... [2023-11-17 12:09:19,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbc4b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:09:19, skipping insertion in model container [2023-11-17 12:09:19,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:18" (2/3) ... [2023-11-17 12:09:19,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbc4b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:09:19, skipping insertion in model container [2023-11-17 12:09:19,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:09:19" (3/3) ... [2023-11-17 12:09:19,611 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2023-11-17 12:09:19,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:09:19,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:09:19,623 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:09:19,674 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-17 12:09:19,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 70 transitions, 182 flow [2023-11-17 12:09:19,735 INFO L124 PetriNetUnfolderBase]: 0/64 cut-off events. [2023-11-17 12:09:19,735 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 12:09:19,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 64 events. 0/64 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:09:19,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 70 transitions, 182 flow [2023-11-17 12:09:19,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 63 transitions, 162 flow [2023-11-17 12:09:19,744 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:09:19,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 63 transitions, 162 flow [2023-11-17 12:09:19,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 63 transitions, 162 flow [2023-11-17 12:09:19,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 63 transitions, 162 flow [2023-11-17 12:09:19,784 INFO L124 PetriNetUnfolderBase]: 0/63 cut-off events. [2023-11-17 12:09:19,784 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 12:09:19,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 63 events. 0/63 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:09:19,786 INFO L119 LiptonReduction]: Number of co-enabled transitions 1954 [2023-11-17 12:09:20,620 INFO L134 LiptonReduction]: Checked pairs total: 3728 [2023-11-17 12:09:20,621 INFO L136 LiptonReduction]: Total number of compositions: 25 [2023-11-17 12:09:20,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:09:20,644 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=LoopHeads, 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;@74df55ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:09:20,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 12:09:20,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:09:20,657 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-11-17 12:09:20,657 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 12:09:20,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:20,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:20,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:20,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1682498716, now seen corresponding path program 1 times [2023-11-17 12:09:20,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:20,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682897951] [2023-11-17 12:09:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682897951] [2023-11-17 12:09:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682897951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:21,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:21,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547606863] [2023-11-17 12:09:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:21,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:09:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:09:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:09:21,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 95 [2023-11-17 12:09:21,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2023-11-17 12:09:21,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:21,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 95 [2023-11-17 12:09:21,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:23,773 INFO L124 PetriNetUnfolderBase]: 17545/23053 cut-off events. [2023-11-17 12:09:23,774 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2023-11-17 12:09:23,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48140 conditions, 23053 events. 17545/23053 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 109507 event pairs, 3555 based on Foata normal form. 1/23054 useless extension candidates. Maximal degree in co-relation 37576. Up to 9953 conditions per place. [2023-11-17 12:09:23,973 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 86 selfloop transitions, 13 changer transitions 31/130 dead transitions. [2023-11-17 12:09:23,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 130 transitions, 625 flow [2023-11-17 12:09:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:09:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:09:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2023-11-17 12:09:23,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2023-11-17 12:09:23,986 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 209 transitions. [2023-11-17 12:09:23,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 209 transitions. [2023-11-17 12:09:23,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:23,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 209 transitions. [2023-11-17 12:09:23,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 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) [2023-11-17 12:09:23,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:09:23,997 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:09:23,998 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 112 flow. Second operand 6 states and 209 transitions. [2023-11-17 12:09:23,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 130 transitions, 625 flow [2023-11-17 12:09:24,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 130 transitions, 555 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-17 12:09:24,141 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 173 flow [2023-11-17 12:09:24,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-11-17 12:09:24,145 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2023-11-17 12:09:24,145 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 173 flow [2023-11-17 12:09:24,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2023-11-17 12:09:24,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:24,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:24,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:09:24,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:24,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:24,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1637291420, now seen corresponding path program 2 times [2023-11-17 12:09:24,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:24,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177121838] [2023-11-17 12:09:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:24,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:24,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:24,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177121838] [2023-11-17 12:09:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177121838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:24,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774386524] [2023-11-17 12:09:24,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:24,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:09:24,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:24,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:09:24,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:09:24,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 95 [2023-11-17 12:09:24,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2023-11-17 12:09:24,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:24,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 95 [2023-11-17 12:09:24,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:26,392 INFO L124 PetriNetUnfolderBase]: 16943/22451 cut-off events. [2023-11-17 12:09:26,392 INFO L125 PetriNetUnfolderBase]: For 7984/7984 co-relation queries the response was YES. [2023-11-17 12:09:26,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63309 conditions, 22451 events. 16943/22451 cut-off events. For 7984/7984 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 109186 event pairs, 3257 based on Foata normal form. 1/22452 useless extension candidates. Maximal degree in co-relation 63300. Up to 10256 conditions per place. [2023-11-17 12:09:26,480 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 100 selfloop transitions, 18 changer transitions 19/137 dead transitions. [2023-11-17 12:09:26,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 137 transitions, 709 flow [2023-11-17 12:09:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:09:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:09:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2023-11-17 12:09:26,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701754385964912 [2023-11-17 12:09:26,482 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 211 transitions. [2023-11-17 12:09:26,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 211 transitions. [2023-11-17 12:09:26,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:26,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 211 transitions. [2023-11-17 12:09:26,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 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) [2023-11-17 12:09:26,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:09:26,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:09:26,485 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 173 flow. Second operand 6 states and 211 transitions. [2023-11-17 12:09:26,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 137 transitions, 709 flow [2023-11-17 12:09:26,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 137 transitions, 700 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:26,490 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 273 flow [2023-11-17 12:09:26,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-11-17 12:09:26,491 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-11-17 12:09:26,491 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 273 flow [2023-11-17 12:09:26,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2023-11-17 12:09:26,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:26,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:26,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:09:26,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:26,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash 825697812, now seen corresponding path program 3 times [2023-11-17 12:09:26,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:26,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697322395] [2023-11-17 12:09:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:26,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:26,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:26,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697322395] [2023-11-17 12:09:26,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697322395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:26,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:26,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931511261] [2023-11-17 12:09:26,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:26,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:26,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:26,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:26,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:26,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:09:26,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:26,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:26,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:09:26,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:29,345 INFO L124 PetriNetUnfolderBase]: 30358/40433 cut-off events. [2023-11-17 12:09:29,345 INFO L125 PetriNetUnfolderBase]: For 105697/105697 co-relation queries the response was YES. [2023-11-17 12:09:29,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146900 conditions, 40433 events. 30358/40433 cut-off events. For 105697/105697 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 222442 event pairs, 6154 based on Foata normal form. 886/41319 useless extension candidates. Maximal degree in co-relation 74844. Up to 15957 conditions per place. [2023-11-17 12:09:29,570 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 106 selfloop transitions, 57 changer transitions 0/163 dead transitions. [2023-11-17 12:09:29,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 163 transitions, 1100 flow [2023-11-17 12:09:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2023-11-17 12:09:29,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-11-17 12:09:29,572 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 225 transitions. [2023-11-17 12:09:29,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 225 transitions. [2023-11-17 12:09:29,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:29,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 225 transitions. [2023-11-17 12:09:29,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2023-11-17 12:09:29,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:29,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:29,574 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 273 flow. Second operand 5 states and 225 transitions. [2023-11-17 12:09:29,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 163 transitions, 1100 flow [2023-11-17 12:09:29,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 163 transitions, 922 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-11-17 12:09:29,617 INFO L231 Difference]: Finished difference. Result has 57 places, 100 transitions, 638 flow [2023-11-17 12:09:29,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=638, PETRI_PLACES=57, PETRI_TRANSITIONS=100} [2023-11-17 12:09:29,618 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-11-17 12:09:29,618 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 100 transitions, 638 flow [2023-11-17 12:09:29,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:29,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:29,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:29,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:09:29,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:29,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:29,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1329807594, now seen corresponding path program 4 times [2023-11-17 12:09:29,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:29,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276313440] [2023-11-17 12:09:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:29,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:29,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:29,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276313440] [2023-11-17 12:09:29,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276313440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:29,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:29,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:29,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480566713] [2023-11-17 12:09:29,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:29,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:29,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:29,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:09:29,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 100 transitions, 638 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:29,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:29,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:09:29,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:32,753 INFO L124 PetriNetUnfolderBase]: 32357/43224 cut-off events. [2023-11-17 12:09:32,753 INFO L125 PetriNetUnfolderBase]: For 110304/110304 co-relation queries the response was YES. [2023-11-17 12:09:32,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180158 conditions, 43224 events. 32357/43224 cut-off events. For 110304/110304 co-relation queries the response was YES. Maximal size of possible extension queue 1659. Compared 243326 event pairs, 6381 based on Foata normal form. 840/44064 useless extension candidates. Maximal degree in co-relation 36729. Up to 19789 conditions per place. [2023-11-17 12:09:33,015 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 102 selfloop transitions, 87 changer transitions 0/189 dead transitions. [2023-11-17 12:09:33,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 189 transitions, 1437 flow [2023-11-17 12:09:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2023-11-17 12:09:33,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652631578947368 [2023-11-17 12:09:33,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 221 transitions. [2023-11-17 12:09:33,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 221 transitions. [2023-11-17 12:09:33,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:33,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 221 transitions. [2023-11-17 12:09:33,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 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) [2023-11-17 12:09:33,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:33,018 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:33,018 INFO L175 Difference]: Start difference. First operand has 57 places, 100 transitions, 638 flow. Second operand 5 states and 221 transitions. [2023-11-17 12:09:33,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 189 transitions, 1437 flow [2023-11-17 12:09:33,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 189 transitions, 1403 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-17 12:09:33,290 INFO L231 Difference]: Finished difference. Result has 62 places, 131 transitions, 1078 flow [2023-11-17 12:09:33,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1078, PETRI_PLACES=62, PETRI_TRANSITIONS=131} [2023-11-17 12:09:33,291 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-11-17 12:09:33,291 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 131 transitions, 1078 flow [2023-11-17 12:09:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:33,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:33,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:09:33,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1420068758, now seen corresponding path program 5 times [2023-11-17 12:09:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024978213] [2023-11-17 12:09:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:33,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:33,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024978213] [2023-11-17 12:09:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024978213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:33,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:33,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:33,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961105461] [2023-11-17 12:09:33,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:33,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:33,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:33,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:33,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:33,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:09:33,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 131 transitions, 1078 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:33,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:33,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:09:33,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:36,875 INFO L124 PetriNetUnfolderBase]: 34987/47010 cut-off events. [2023-11-17 12:09:36,875 INFO L125 PetriNetUnfolderBase]: For 155432/155432 co-relation queries the response was YES. [2023-11-17 12:09:36,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215650 conditions, 47010 events. 34987/47010 cut-off events. For 155432/155432 co-relation queries the response was YES. Maximal size of possible extension queue 1873. Compared 273361 event pairs, 6241 based on Foata normal form. 1276/48286 useless extension candidates. Maximal degree in co-relation 59352. Up to 20795 conditions per place. [2023-11-17 12:09:37,168 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 104 selfloop transitions, 139 changer transitions 0/243 dead transitions. [2023-11-17 12:09:37,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 243 transitions, 2306 flow [2023-11-17 12:09:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2023-11-17 12:09:37,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4694736842105263 [2023-11-17 12:09:37,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 223 transitions. [2023-11-17 12:09:37,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 223 transitions. [2023-11-17 12:09:37,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:37,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 223 transitions. [2023-11-17 12:09:37,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 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) [2023-11-17 12:09:37,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:37,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:37,171 INFO L175 Difference]: Start difference. First operand has 62 places, 131 transitions, 1078 flow. Second operand 5 states and 223 transitions. [2023-11-17 12:09:37,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 243 transitions, 2306 flow [2023-11-17 12:09:37,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 243 transitions, 2156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:37,234 INFO L231 Difference]: Finished difference. Result has 65 places, 184 transitions, 1853 flow [2023-11-17 12:09:37,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1853, PETRI_PLACES=65, PETRI_TRANSITIONS=184} [2023-11-17 12:09:37,234 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2023-11-17 12:09:37,234 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 184 transitions, 1853 flow [2023-11-17 12:09:37,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:37,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:37,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:37,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:09:37,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:37,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1575344366, now seen corresponding path program 6 times [2023-11-17 12:09:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:37,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694419030] [2023-11-17 12:09:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:37,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694419030] [2023-11-17 12:09:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694419030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:37,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239903672] [2023-11-17 12:09:37,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:37,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:09:37,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 184 transitions, 1853 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:37,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:37,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:09:37,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:41,696 INFO L124 PetriNetUnfolderBase]: 37870/51319 cut-off events. [2023-11-17 12:09:41,697 INFO L125 PetriNetUnfolderBase]: For 230566/230566 co-relation queries the response was YES. [2023-11-17 12:09:41,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254138 conditions, 51319 events. 37870/51319 cut-off events. For 230566/230566 co-relation queries the response was YES. Maximal size of possible extension queue 2138. Compared 309838 event pairs, 6103 based on Foata normal form. 1630/52949 useless extension candidates. Maximal degree in co-relation 73419. Up to 21901 conditions per place. [2023-11-17 12:09:42,046 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 106 selfloop transitions, 224 changer transitions 0/330 dead transitions. [2023-11-17 12:09:42,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 330 transitions, 3757 flow [2023-11-17 12:09:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2023-11-17 12:09:42,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-11-17 12:09:42,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 225 transitions. [2023-11-17 12:09:42,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 225 transitions. [2023-11-17 12:09:42,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:42,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 225 transitions. [2023-11-17 12:09:42,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2023-11-17 12:09:42,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:42,049 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:42,049 INFO L175 Difference]: Start difference. First operand has 65 places, 184 transitions, 1853 flow. Second operand 5 states and 225 transitions. [2023-11-17 12:09:42,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 330 transitions, 3757 flow [2023-11-17 12:09:42,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 330 transitions, 3522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:42,115 INFO L231 Difference]: Finished difference. Result has 68 places, 270 transitions, 3263 flow [2023-11-17 12:09:42,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3263, PETRI_PLACES=68, PETRI_TRANSITIONS=270} [2023-11-17 12:09:42,116 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2023-11-17 12:09:42,116 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 270 transitions, 3263 flow [2023-11-17 12:09:42,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:42,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:42,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:42,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:09:42,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:42,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:42,117 INFO L85 PathProgramCache]: Analyzing trace with hash -898835710, now seen corresponding path program 7 times [2023-11-17 12:09:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:42,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615037981] [2023-11-17 12:09:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:42,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:42,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:42,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615037981] [2023-11-17 12:09:42,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615037981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:42,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:42,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:42,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669525450] [2023-11-17 12:09:42,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:42,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:42,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:42,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:42,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:42,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:09:42,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 270 transitions, 3263 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:42,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:42,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:09:42,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:47,453 INFO L124 PetriNetUnfolderBase]: 40916/56047 cut-off events. [2023-11-17 12:09:47,453 INFO L125 PetriNetUnfolderBase]: For 348758/348758 co-relation queries the response was YES. [2023-11-17 12:09:47,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298742 conditions, 56047 events. 40916/56047 cut-off events. For 348758/348758 co-relation queries the response was YES. Maximal size of possible extension queue 2451. Compared 352925 event pairs, 5845 based on Foata normal form. 1976/58023 useless extension candidates. Maximal degree in co-relation 91287. Up to 23075 conditions per place. [2023-11-17 12:09:47,822 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 104 selfloop transitions, 355 changer transitions 2/461 dead transitions. [2023-11-17 12:09:47,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 461 transitions, 6226 flow [2023-11-17 12:09:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2023-11-17 12:09:47,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-11-17 12:09:47,825 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 225 transitions. [2023-11-17 12:09:47,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 225 transitions. [2023-11-17 12:09:47,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:47,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 225 transitions. [2023-11-17 12:09:47,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2023-11-17 12:09:47,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:47,827 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-11-17 12:09:47,827 INFO L175 Difference]: Start difference. First operand has 68 places, 270 transitions, 3263 flow. Second operand 5 states and 225 transitions. [2023-11-17 12:09:47,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 461 transitions, 6226 flow [2023-11-17 12:09:47,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 461 transitions, 5860 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:47,920 INFO L231 Difference]: Finished difference. Result has 71 places, 402 transitions, 5687 flow [2023-11-17 12:09:47,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5687, PETRI_PLACES=71, PETRI_TRANSITIONS=402} [2023-11-17 12:09:47,921 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2023-11-17 12:09:47,921 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 402 transitions, 5687 flow [2023-11-17 12:09:47,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-17 12:09:47,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:47,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:09:47,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:47,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash 420493656, now seen corresponding path program 8 times [2023-11-17 12:09:47,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:47,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927921537] [2023-11-17 12:09:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:48,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:48,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927921537] [2023-11-17 12:09:48,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927921537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:48,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:48,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:09:48,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397555251] [2023-11-17 12:09:48,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:48,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:09:48,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:48,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:09:48,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:09:48,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:09:48,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 402 transitions, 5687 flow. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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) [2023-11-17 12:09:48,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:48,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:09:48,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:54,032 INFO L124 PetriNetUnfolderBase]: 44559/62602 cut-off events. [2023-11-17 12:09:54,032 INFO L125 PetriNetUnfolderBase]: For 305311/305311 co-relation queries the response was YES. [2023-11-17 12:09:54,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319550 conditions, 62602 events. 44559/62602 cut-off events. For 305311/305311 co-relation queries the response was YES. Maximal size of possible extension queue 2863. Compared 416610 event pairs, 3120 based on Foata normal form. 1918/64520 useless extension candidates. Maximal degree in co-relation 146783. Up to 24379 conditions per place. [2023-11-17 12:09:54,467 INFO L140 encePairwiseOnDemand]: 81/95 looper letters, 127 selfloop transitions, 485 changer transitions 7/619 dead transitions. [2023-11-17 12:09:54,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 619 transitions, 9021 flow [2023-11-17 12:09:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:09:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:09:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 274 transitions. [2023-11-17 12:09:54,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649 [2023-11-17 12:09:54,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 274 transitions. [2023-11-17 12:09:54,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 274 transitions. [2023-11-17 12:09:54,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:54,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 274 transitions. [2023-11-17 12:09:54,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.666666666666664) internal successors, (274), 6 states have internal predecessors, (274), 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) [2023-11-17 12:09:54,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:09:54,470 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:09:54,470 INFO L175 Difference]: Start difference. First operand has 71 places, 402 transitions, 5687 flow. Second operand 6 states and 274 transitions. [2023-11-17 12:09:54,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 619 transitions, 9021 flow [2023-11-17 12:09:54,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 619 transitions, 8579 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:54,754 INFO L231 Difference]: Finished difference. Result has 77 places, 532 transitions, 8766 flow [2023-11-17 12:09:54,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=4103, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8766, PETRI_PLACES=77, PETRI_TRANSITIONS=532} [2023-11-17 12:09:54,754 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2023-11-17 12:09:54,755 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 532 transitions, 8766 flow [2023-11-17 12:09:54,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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) [2023-11-17 12:09:54,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:54,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:54,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:09:54,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:09:54,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:54,755 INFO L85 PathProgramCache]: Analyzing trace with hash 855051346, now seen corresponding path program 9 times [2023-11-17 12:09:54,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:54,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306806227] [2023-11-17 12:09:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:54,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:54,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:54,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:54,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306806227] [2023-11-17 12:09:54,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306806227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:54,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:54,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:09:54,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899557104] [2023-11-17 12:09:54,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:54,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:09:54,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:09:54,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:09:54,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:09:54,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 532 transitions, 8766 flow. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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) [2023-11-17 12:09:54,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:54,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:09:54,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:02,825 INFO L124 PetriNetUnfolderBase]: 44391/62458 cut-off events. [2023-11-17 12:10:02,825 INFO L125 PetriNetUnfolderBase]: For 466539/466539 co-relation queries the response was YES. [2023-11-17 12:10:03,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385249 conditions, 62458 events. 44391/62458 cut-off events. For 466539/466539 co-relation queries the response was YES. Maximal size of possible extension queue 3108. Compared 417865 event pairs, 2802 based on Foata normal form. 1860/64318 useless extension candidates. Maximal degree in co-relation 186922. Up to 26031 conditions per place. [2023-11-17 12:10:03,372 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 128 selfloop transitions, 590 changer transitions 0/718 dead transitions. [2023-11-17 12:10:03,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 718 transitions, 12463 flow [2023-11-17 12:10:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:10:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:10:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2023-11-17 12:10:03,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2023-11-17 12:10:03,374 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 273 transitions. [2023-11-17 12:10:03,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 273 transitions. [2023-11-17 12:10:03,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:03,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 273 transitions. [2023-11-17 12:10:03,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 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) [2023-11-17 12:10:03,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:10:03,375 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:10:03,375 INFO L175 Difference]: Start difference. First operand has 77 places, 532 transitions, 8766 flow. Second operand 6 states and 273 transitions. [2023-11-17 12:10:03,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 718 transitions, 12463 flow [2023-11-17 12:10:06,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 718 transitions, 11755 flow, removed 354 selfloop flow, removed 1 redundant places. [2023-11-17 12:10:06,605 INFO L231 Difference]: Finished difference. Result has 81 places, 637 transitions, 11470 flow [2023-11-17 12:10:06,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=8193, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11470, PETRI_PLACES=81, PETRI_TRANSITIONS=637} [2023-11-17 12:10:06,606 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2023-11-17 12:10:06,606 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 637 transitions, 11470 flow [2023-11-17 12:10:06,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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) [2023-11-17 12:10:06,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:06,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:06,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:10:06,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:10:06,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 416687372, now seen corresponding path program 10 times [2023-11-17 12:10:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614036274] [2023-11-17 12:10:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:06,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:10:06,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614036274] [2023-11-17 12:10:06,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614036274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:06,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:06,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:10:06,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853121007] [2023-11-17 12:10:06,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:06,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:10:06,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:06,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:10:06,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:10:06,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:10:06,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 637 transitions, 11470 flow. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2023-11-17 12:10:06,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:06,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:10:06,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:15,322 INFO L124 PetriNetUnfolderBase]: 48451/68614 cut-off events. [2023-11-17 12:10:15,323 INFO L125 PetriNetUnfolderBase]: For 537102/537102 co-relation queries the response was YES. [2023-11-17 12:10:15,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463607 conditions, 68614 events. 48451/68614 cut-off events. For 537102/537102 co-relation queries the response was YES. Maximal size of possible extension queue 3583. Compared 471663 event pairs, 3396 based on Foata normal form. 1532/70146 useless extension candidates. Maximal degree in co-relation 92478. Up to 25521 conditions per place. [2023-11-17 12:10:16,092 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 155 selfloop transitions, 849 changer transitions 0/1004 dead transitions. [2023-11-17 12:10:16,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1004 transitions, 18711 flow [2023-11-17 12:10:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:10:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:10:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 352 transitions. [2023-11-17 12:10:16,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2023-11-17 12:10:16,093 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 352 transitions. [2023-11-17 12:10:16,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 352 transitions. [2023-11-17 12:10:16,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:16,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 352 transitions. [2023-11-17 12:10:16,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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) [2023-11-17 12:10:16,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2023-11-17 12:10:16,095 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2023-11-17 12:10:16,095 INFO L175 Difference]: Start difference. First operand has 81 places, 637 transitions, 11470 flow. Second operand 8 states and 352 transitions. [2023-11-17 12:10:16,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 1004 transitions, 18711 flow [2023-11-17 12:10:16,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 1004 transitions, 17791 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:10:16,566 INFO L231 Difference]: Finished difference. Result has 85 places, 896 transitions, 17048 flow [2023-11-17 12:10:16,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=10827, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=590, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17048, PETRI_PLACES=85, PETRI_TRANSITIONS=896} [2023-11-17 12:10:16,567 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2023-11-17 12:10:16,568 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 896 transitions, 17048 flow [2023-11-17 12:10:16,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2023-11-17 12:10:16,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:16,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:16,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 12:10:16,568 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:10:16,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:16,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1613256260, now seen corresponding path program 11 times [2023-11-17 12:10:16,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:16,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830399273] [2023-11-17 12:10:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:16,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:10:16,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830399273] [2023-11-17 12:10:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830399273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:16,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:16,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:10:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784386952] [2023-11-17 12:10:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:16,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:10:16,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:16,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:10:16,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:10:16,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:10:16,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 896 transitions, 17048 flow. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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) [2023-11-17 12:10:16,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:16,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:10:16,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:27,800 INFO L124 PetriNetUnfolderBase]: 50448/72241 cut-off events. [2023-11-17 12:10:27,800 INFO L125 PetriNetUnfolderBase]: For 631454/631454 co-relation queries the response was YES. [2023-11-17 12:10:28,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494641 conditions, 72241 events. 50448/72241 cut-off events. For 631454/631454 co-relation queries the response was YES. Maximal size of possible extension queue 3963. Compared 515654 event pairs, 2955 based on Foata normal form. 2556/74797 useless extension candidates. Maximal degree in co-relation 102440. Up to 26275 conditions per place. [2023-11-17 12:10:28,382 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 130 selfloop transitions, 994 changer transitions 0/1124 dead transitions. [2023-11-17 12:10:28,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 1124 transitions, 22476 flow [2023-11-17 12:10:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:10:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:10:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2023-11-17 12:10:28,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-11-17 12:10:28,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 275 transitions. [2023-11-17 12:10:28,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 275 transitions. [2023-11-17 12:10:28,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:28,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 275 transitions. [2023-11-17 12:10:28,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 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) [2023-11-17 12:10:28,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:10:28,387 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 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) [2023-11-17 12:10:28,387 INFO L175 Difference]: Start difference. First operand has 85 places, 896 transitions, 17048 flow. Second operand 6 states and 275 transitions. [2023-11-17 12:10:28,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 1124 transitions, 22476 flow [2023-11-17 12:10:28,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 1124 transitions, 21397 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-17 12:10:28,921 INFO L231 Difference]: Finished difference. Result has 88 places, 1042 transitions, 21337 flow [2023-11-17 12:10:28,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=15894, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=836, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=21337, PETRI_PLACES=88, PETRI_TRANSITIONS=1042} [2023-11-17 12:10:28,922 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2023-11-17 12:10:28,922 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 1042 transitions, 21337 flow [2023-11-17 12:10:28,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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) [2023-11-17 12:10:28,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:28,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:28,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 12:10:28,923 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:10:28,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:28,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1755241428, now seen corresponding path program 12 times [2023-11-17 12:10:28,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:28,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186050268] [2023-11-17 12:10:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:10:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:29,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186050268] [2023-11-17 12:10:29,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186050268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:29,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:10:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790308180] [2023-11-17 12:10:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:10:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:10:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:10:29,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:10:29,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 1042 transitions, 21337 flow. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2023-11-17 12:10:29,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:29,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:10:29,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:43,535 INFO L124 PetriNetUnfolderBase]: 54835/79258 cut-off events. [2023-11-17 12:10:43,535 INFO L125 PetriNetUnfolderBase]: For 801847/801847 co-relation queries the response was YES. [2023-11-17 12:10:43,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570298 conditions, 79258 events. 54835/79258 cut-off events. For 801847/801847 co-relation queries the response was YES. Maximal size of possible extension queue 4455. Compared 583342 event pairs, 3701 based on Foata normal form. 2204/81462 useless extension candidates. Maximal degree in co-relation 125204. Up to 28809 conditions per place. [2023-11-17 12:10:44,205 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 161 selfloop transitions, 1317 changer transitions 6/1484 dead transitions. [2023-11-17 12:10:44,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 1484 transitions, 31712 flow [2023-11-17 12:10:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:10:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:10:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 358 transitions. [2023-11-17 12:10:44,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2023-11-17 12:10:44,207 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 358 transitions. [2023-11-17 12:10:44,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 358 transitions. [2023-11-17 12:10:44,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:44,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 358 transitions. [2023-11-17 12:10:44,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.75) internal successors, (358), 8 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:44,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2023-11-17 12:10:44,209 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2023-11-17 12:10:44,209 INFO L175 Difference]: Start difference. First operand has 88 places, 1042 transitions, 21337 flow. Second operand 8 states and 358 transitions. [2023-11-17 12:10:44,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 1484 transitions, 31712 flow [2023-11-17 12:10:45,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 1484 transitions, 30292 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:10:45,044 INFO L231 Difference]: Finished difference. Result has 92 places, 1365 transitions, 29431 flow [2023-11-17 12:10:45,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=20272, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1042, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=994, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29431, PETRI_PLACES=92, PETRI_TRANSITIONS=1365} [2023-11-17 12:10:45,045 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2023-11-17 12:10:45,045 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 1365 transitions, 29431 flow [2023-11-17 12:10:45,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2023-11-17 12:10:45,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:45,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:45,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 12:10:45,046 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 12:10:45,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1914960394, now seen corresponding path program 13 times [2023-11-17 12:10:45,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:45,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086026859] [2023-11-17 12:10:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:45,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:10:45,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086026859] [2023-11-17 12:10:45,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086026859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:45,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:45,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:10:45,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192765082] [2023-11-17 12:10:45,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:45,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:10:45,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:10:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:10:45,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 95 [2023-11-17 12:10:45,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 1365 transitions, 29431 flow. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2023-11-17 12:10:45,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:45,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 95 [2023-11-17 12:10:45,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand