/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:37:41,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:37:41,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 05:37:41,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:37:41,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:37:41,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:37:41,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:37:41,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:37:41,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:37:41,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:37:41,638 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:37:41,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:37:41,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:37:41,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:37:41,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:37:41,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:37:41,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:37:41,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:37:41,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:37:41,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:37:41,641 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:37:41,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:37:41,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:37:41,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:37:41,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:37:41,642 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:37:41,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:37:41,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:37:41,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:37:41,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:37:41,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:37:41,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:37:41,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:37:41,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:37:41,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:37:41,645 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:37:41,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:37:41,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:37:41,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:37:41,938 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:37:41,939 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:37:41,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2023-08-24 05:37:42,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:37:43,162 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:37:43,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2023-08-24 05:37:43,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc2c2b64/2220d37a7a1d4eb8b6b033d996900462/FLAGca319103a [2023-08-24 05:37:43,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc2c2b64/2220d37a7a1d4eb8b6b033d996900462 [2023-08-24 05:37:43,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:37:43,195 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:37:43,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:37:43,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:37:43,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:37:43,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de77a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43, skipping insertion in model container [2023-08-24 05:37:43,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,241 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:37:43,329 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.i[945,958] [2023-08-24 05:37:43,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:37:43,412 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:37:43,418 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.i[945,958] [2023-08-24 05:37:43,431 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:37:43,432 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:37:43,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:37:43,483 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:37:43,483 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:37:43,488 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:37:43,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43 WrapperNode [2023-08-24 05:37:43,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:37:43,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:37:43,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:37:43,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:37:43,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,533 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-24 05:37:43,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:37:43,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:37:43,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:37:43,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:37:43,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:37:43,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:37:43,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:37:43,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:37:43,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (1/1) ... [2023-08-24 05:37:43,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:37:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:37:43,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 05:37:43,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 05:37:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:37:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:37:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:37:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:37:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:37:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:37:43,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:37:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:37:43,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:37:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:37:43,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:37:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:37:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:37:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:37:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:37:43,615 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 05:37:43,728 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:37:43,729 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:37:43,898 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:37:43,903 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:37:43,903 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:37:43,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:37:43 BoogieIcfgContainer [2023-08-24 05:37:43,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:37:43,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:37:43,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:37:43,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:37:43,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:37:43" (1/3) ... [2023-08-24 05:37:43,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29957ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:37:43, skipping insertion in model container [2023-08-24 05:37:43,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:43" (2/3) ... [2023-08-24 05:37:43,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29957ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:37:43, skipping insertion in model container [2023-08-24 05:37:43,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:37:43" (3/3) ... [2023-08-24 05:37:43,910 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2023-08-24 05:37:43,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:37:43,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:37:43,930 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:37:44,000 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:37:44,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 05:37:44,101 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-08-24 05:37:44,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:44,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 05:37:44,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 05:37:44,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-24 05:37:44,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:37:44,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 05:37:44,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 05:37:44,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-24 05:37:44,146 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-08-24 05:37:44,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:44,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 05:37:44,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 05:37:45,762 INFO L134 LiptonReduction]: Checked pairs total: 2177 [2023-08-24 05:37:45,762 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-24 05:37:45,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:37:45,777 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8d6d639, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:37:45,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 05:37:45,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:37:45,780 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 05:37:45,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:45,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:45,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:45,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:37:45,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2054399275, now seen corresponding path program 1 times [2023-08-24 05:37:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:45,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340108769] [2023-08-24 05:37:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:45,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:37:46,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:46,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340108769] [2023-08-24 05:37:46,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340108769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:46,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:46,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:37:46,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291993372] [2023-08-24 05:37:46,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:46,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:46,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:46,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:46,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:46,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2023-08-24 05:37:46,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:46,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2023-08-24 05:37:46,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:46,207 INFO L124 PetriNetUnfolderBase]: 202/344 cut-off events. [2023-08-24 05:37:46,207 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 05:37:46,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 344 events. 202/344 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1354 event pairs, 78 based on Foata normal form. 6/349 useless extension candidates. Maximal degree in co-relation 693. Up to 296 conditions per place. [2023-08-24 05:37:46,210 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 22 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-08-24 05:37:46,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 119 flow [2023-08-24 05:37:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:46,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-24 05:37:46,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5933806146572104 [2023-08-24 05:37:46,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-24 05:37:46,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-24 05:37:46,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:46,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-24 05:37:46,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,239 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 251 transitions. [2023-08-24 05:37:46,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 119 flow [2023-08-24 05:37:46,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:37:46,242 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-08-24 05:37:46,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-24 05:37:46,246 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-24 05:37:46,246 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-08-24 05:37:46,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:46,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:46,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:37:46,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:37:46,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:46,254 INFO L85 PathProgramCache]: Analyzing trace with hash -738132499, now seen corresponding path program 1 times [2023-08-24 05:37:46,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:46,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709838855] [2023-08-24 05:37:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:46,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:37:46,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:46,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709838855] [2023-08-24 05:37:46,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709838855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:46,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:46,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:37:46,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408106919] [2023-08-24 05:37:46,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:46,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:37:46,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:46,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:37:46,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:37:46,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 05:37:46,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:46,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 05:37:46,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:46,527 INFO L124 PetriNetUnfolderBase]: 173/315 cut-off events. [2023-08-24 05:37:46,527 INFO L125 PetriNetUnfolderBase]: For 73/77 co-relation queries the response was YES. [2023-08-24 05:37:46,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 315 events. 173/315 cut-off events. For 73/77 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1237 event pairs, 39 based on Foata normal form. 36/344 useless extension candidates. Maximal degree in co-relation 732. Up to 184 conditions per place. [2023-08-24 05:37:46,531 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 22 selfloop transitions, 4 changer transitions 15/45 dead transitions. [2023-08-24 05:37:46,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 212 flow [2023-08-24 05:37:46,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:37:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:37:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-08-24 05:37:46,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2023-08-24 05:37:46,536 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-08-24 05:37:46,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-08-24 05:37:46,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:46,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-08-24 05:37:46,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,542 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,543 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 5 states and 399 transitions. [2023-08-24 05:37:46,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 212 flow [2023-08-24 05:37:46,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:37:46,547 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 92 flow [2023-08-24 05:37:46,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-08-24 05:37:46,548 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-24 05:37:46,549 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 92 flow [2023-08-24 05:37:46,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:46,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:46,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:37:46,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:37:46,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1853572276, now seen corresponding path program 1 times [2023-08-24 05:37:46,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:46,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164859168] [2023-08-24 05:37:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:46,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:37:46,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:46,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164859168] [2023-08-24 05:37:46,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164859168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:46,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:46,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:37:46,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292967701] [2023-08-24 05:37:46,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:46,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:37:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:46,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:37:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:37:46,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 05:37:46,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:46,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 05:37:46,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:46,749 INFO L124 PetriNetUnfolderBase]: 101/201 cut-off events. [2023-08-24 05:37:46,749 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2023-08-24 05:37:46,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 201 events. 101/201 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 684 event pairs, 18 based on Foata normal form. 20/217 useless extension candidates. Maximal degree in co-relation 631. Up to 91 conditions per place. [2023-08-24 05:37:46,752 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 27 selfloop transitions, 7 changer transitions 14/52 dead transitions. [2023-08-24 05:37:46,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 304 flow [2023-08-24 05:37:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:37:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:37:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 479 transitions. [2023-08-24 05:37:46,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566193853427896 [2023-08-24 05:37:46,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 479 transitions. [2023-08-24 05:37:46,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 479 transitions. [2023-08-24 05:37:46,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:46,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 479 transitions. [2023-08-24 05:37:46,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,757 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 92 flow. Second operand 6 states and 479 transitions. [2023-08-24 05:37:46,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 304 flow [2023-08-24 05:37:46,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 298 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 05:37:46,759 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 142 flow [2023-08-24 05:37:46,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2023-08-24 05:37:46,760 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-24 05:37:46,763 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 142 flow [2023-08-24 05:37:46,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:46,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:46,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:37:46,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:37:46,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1422069978, now seen corresponding path program 1 times [2023-08-24 05:37:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:46,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056741213] [2023-08-24 05:37:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:46,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:37:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056741213] [2023-08-24 05:37:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056741213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:37:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14211226] [2023-08-24 05:37:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:46,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 05:37:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 05:37:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 05:37:46,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 05:37:46,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:46,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 05:37:46,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:46,959 INFO L124 PetriNetUnfolderBase]: 66/139 cut-off events. [2023-08-24 05:37:46,959 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-08-24 05:37:46,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 139 events. 66/139 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 411 event pairs, 15 based on Foata normal form. 8/144 useless extension candidates. Maximal degree in co-relation 485. Up to 57 conditions per place. [2023-08-24 05:37:46,960 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 10 changer transitions 7/45 dead transitions. [2023-08-24 05:37:46,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 306 flow [2023-08-24 05:37:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:37:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:37:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2023-08-24 05:37:46,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521783181357649 [2023-08-24 05:37:46,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 545 transitions. [2023-08-24 05:37:46,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 545 transitions. [2023-08-24 05:37:46,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:46,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 545 transitions. [2023-08-24 05:37:46,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,964 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,964 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 142 flow. Second operand 7 states and 545 transitions. [2023-08-24 05:37:46,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 306 flow [2023-08-24 05:37:46,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 270 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-24 05:37:46,967 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 144 flow [2023-08-24 05:37:46,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2023-08-24 05:37:46,967 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-08-24 05:37:46,967 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 144 flow [2023-08-24 05:37:46,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:46,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:46,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:46,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:37:46,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:37:46,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash -825001738, now seen corresponding path program 1 times [2023-08-24 05:37:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:46,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535584437] [2023-08-24 05:37:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:46,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:37:47,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535584437] [2023-08-24 05:37:47,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535584437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:47,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:47,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:37:47,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476209173] [2023-08-24 05:37:47,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:47,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:47,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:47,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:47,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:47,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 141 [2023-08-24 05:37:47,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:47,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 141 [2023-08-24 05:37:47,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:47,148 INFO L124 PetriNetUnfolderBase]: 161/297 cut-off events. [2023-08-24 05:37:47,148 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2023-08-24 05:37:47,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 297 events. 161/297 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1082 event pairs, 28 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 953. Up to 227 conditions per place. [2023-08-24 05:37:47,150 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 35 selfloop transitions, 7 changer transitions 4/46 dead transitions. [2023-08-24 05:37:47,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 354 flow [2023-08-24 05:37:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-24 05:37:47,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791962174940898 [2023-08-24 05:37:47,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-24 05:37:47,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-24 05:37:47,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:47,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-24 05:37:47,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,154 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 144 flow. Second operand 3 states and 245 transitions. [2023-08-24 05:37:47,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 354 flow [2023-08-24 05:37:47,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 284 flow, removed 22 selfloop flow, removed 6 redundant places. [2023-08-24 05:37:47,159 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 160 flow [2023-08-24 05:37:47,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-24 05:37:47,161 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-24 05:37:47,161 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 160 flow [2023-08-24 05:37:47,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:47,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:47,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:37:47,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:37:47,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1794826614, now seen corresponding path program 2 times [2023-08-24 05:37:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:47,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539673971] [2023-08-24 05:37:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:37:47,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:47,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539673971] [2023-08-24 05:37:47,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539673971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:47,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:47,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:37:47,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983321345] [2023-08-24 05:37:47,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:47,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:37:47,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:47,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:37:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:37:47,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 05:37:47,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:47,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 05:37:47,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:47,340 INFO L124 PetriNetUnfolderBase]: 179/336 cut-off events. [2023-08-24 05:37:47,340 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2023-08-24 05:37:47,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 336 events. 179/336 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1277 event pairs, 15 based on Foata normal form. 1/337 useless extension candidates. Maximal degree in co-relation 1187. Up to 113 conditions per place. [2023-08-24 05:37:47,342 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 37 selfloop transitions, 14 changer transitions 10/61 dead transitions. [2023-08-24 05:37:47,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 436 flow [2023-08-24 05:37:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:37:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:37:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-24 05:37:47,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475177304964539 [2023-08-24 05:37:47,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-24 05:37:47,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-24 05:37:47,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:47,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-24 05:37:47,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,345 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,345 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 160 flow. Second operand 5 states and 386 transitions. [2023-08-24 05:37:47,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 436 flow [2023-08-24 05:37:47,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:37:47,349 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 250 flow [2023-08-24 05:37:47,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-08-24 05:37:47,351 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-08-24 05:37:47,351 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 250 flow [2023-08-24 05:37:47,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:47,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:47,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:37:47,352 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 1 more)] === [2023-08-24 05:37:47,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1293956166, now seen corresponding path program 3 times [2023-08-24 05:37:47,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:47,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565486157] [2023-08-24 05:37:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:47,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:37:47,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:47,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565486157] [2023-08-24 05:37:47,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565486157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:47,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:47,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:37:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853660644] [2023-08-24 05:37:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:47,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:37:47,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:47,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:37:47,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:37:47,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 141 [2023-08-24 05:37:47,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:47,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 141 [2023-08-24 05:37:47,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:47,465 INFO L124 PetriNetUnfolderBase]: 199/386 cut-off events. [2023-08-24 05:37:47,465 INFO L125 PetriNetUnfolderBase]: For 715/715 co-relation queries the response was YES. [2023-08-24 05:37:47,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 386 events. 199/386 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1580 event pairs, 36 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1530. Up to 238 conditions per place. [2023-08-24 05:37:47,466 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 31 selfloop transitions, 8 changer transitions 18/57 dead transitions. [2023-08-24 05:37:47,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 458 flow [2023-08-24 05:37:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:37:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:37:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-08-24 05:37:47,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656028368794326 [2023-08-24 05:37:47,468 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-08-24 05:37:47,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-08-24 05:37:47,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:47,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-08-24 05:37:47,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,470 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 250 flow. Second operand 4 states and 319 transitions. [2023-08-24 05:37:47,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 458 flow [2023-08-24 05:37:47,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 05:37:47,473 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 216 flow [2023-08-24 05:37:47,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-08-24 05:37:47,473 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-08-24 05:37:47,473 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 216 flow [2023-08-24 05:37:47,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:47,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:47,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:37:47,474 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 1 more)] === [2023-08-24 05:37:47,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:47,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1959821978, now seen corresponding path program 4 times [2023-08-24 05:37:47,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:47,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413929709] [2023-08-24 05:37:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:37:47,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:47,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413929709] [2023-08-24 05:37:47,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413929709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:47,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:47,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:37:47,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404942796] [2023-08-24 05:37:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:47,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:37:47,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:37:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:37:47,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 05:37:47,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:47,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 05:37:47,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:47,586 INFO L124 PetriNetUnfolderBase]: 62/137 cut-off events. [2023-08-24 05:37:47,586 INFO L125 PetriNetUnfolderBase]: For 363/363 co-relation queries the response was YES. [2023-08-24 05:37:47,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 137 events. 62/137 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 422 event pairs, 4 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 589. Up to 73 conditions per place. [2023-08-24 05:37:47,587 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2023-08-24 05:37:47,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 461 flow [2023-08-24 05:37:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:37:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:37:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-24 05:37:47,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418439716312057 [2023-08-24 05:37:47,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-24 05:37:47,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-24 05:37:47,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:47,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-24 05:37:47,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,590 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,590 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 216 flow. Second operand 5 states and 382 transitions. [2023-08-24 05:37:47,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 461 flow [2023-08-24 05:37:47,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 428 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 05:37:47,592 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-24 05:37:47,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-24 05:37:47,592 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-08-24 05:37:47,592 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-24 05:37:47,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:47,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 05:37:47,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 05:37:47,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 05:37:47,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 05:37:47,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:37:47,595 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-08-24 05:37:47,597 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:37:47,597 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:37:47,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:37:47 BasicIcfg [2023-08-24 05:37:47,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:37:47,600 INFO L158 Benchmark]: Toolchain (without parser) took 4405.14ms. Allocated memory was 320.9MB in the beginning and 442.5MB in the end (delta: 121.6MB). Free memory was 296.1MB in the beginning and 234.0MB in the end (delta: 62.0MB). Peak memory consumption was 182.0MB. Max. memory is 16.0GB. [2023-08-24 05:37:47,600 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 320.9MB. Free memory is still 297.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:37:47,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.71ms. Allocated memory is still 320.9MB. Free memory was 295.6MB in the beginning and 275.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 05:37:47,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.44ms. Allocated memory is still 320.9MB. Free memory was 275.6MB in the beginning and 273.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:37:47,601 INFO L158 Benchmark]: Boogie Preprocessor took 16.23ms. Allocated memory is still 320.9MB. Free memory was 273.5MB in the beginning and 272.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:37:47,601 INFO L158 Benchmark]: RCFGBuilder took 354.36ms. Allocated memory is still 320.9MB. Free memory was 272.0MB in the beginning and 257.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 05:37:47,601 INFO L158 Benchmark]: TraceAbstraction took 3693.22ms. Allocated memory was 320.9MB in the beginning and 442.5MB in the end (delta: 121.6MB). Free memory was 256.7MB in the beginning and 234.0MB in the end (delta: 22.7MB). Peak memory consumption was 144.3MB. Max. memory is 16.0GB. [2023-08-24 05:37:47,602 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 320.9MB. Free memory is still 297.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 291.71ms. Allocated memory is still 320.9MB. Free memory was 295.6MB in the beginning and 275.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.44ms. Allocated memory is still 320.9MB. Free memory was 275.6MB in the beginning and 273.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.23ms. Allocated memory is still 320.9MB. Free memory was 273.5MB in the beginning and 272.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 354.36ms. Allocated memory is still 320.9MB. Free memory was 272.0MB in the beginning and 257.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3693.22ms. Allocated memory was 320.9MB in the beginning and 442.5MB in the end (delta: 121.6MB). Free memory was 256.7MB in the beginning and 234.0MB in the end (delta: 22.7MB). Peak memory consumption was 144.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1284, independent: 1187, independent conditional: 0, independent unconditional: 1187, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1284, independent: 638, independent conditional: 0, independent unconditional: 638, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 389 IncrementalHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 19 mSDtfsCounter, 389 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=6, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:37:47,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...