/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:11:09,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:11:09,105 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-23 23:11:09,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:11:09,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:11:09,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:11:09,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:11:09,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:11:09,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:11:09,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:11:09,141 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:11:09,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:11:09,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:11:09,142 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:11:09,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:11:09,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:11:09,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:11:09,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:11:09,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:11:09,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:11:09,143 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:11:09,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:11:09,144 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:11:09,144 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:11:09,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:11:09,144 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:11:09,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:11:09,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:11:09,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:11:09,145 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:11:09,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:11:09,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:11:09,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:11:09,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:11:09,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:11:09,146 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:11:09,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:11:09,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:11:09,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:11:09,396 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:11:09,396 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:11:09,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:11:10,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:11:10,554 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:11:10,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:11:10,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72476b8a7/e2163e3d32e64129af3d162938bfecfa/FLAG543debd1d [2023-08-23 23:11:10,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72476b8a7/e2163e3d32e64129af3d162938bfecfa [2023-08-23 23:11:10,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:11:10,583 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:11:10,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:11:10,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:11:10,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:11:10,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd274cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10, skipping insertion in model container [2023-08-23 23:11:10,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,623 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:11:10,714 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-23 23:11:10,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:11:10,841 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:11:10,852 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-23 23:11:10,866 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:11:10,867 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:11:10,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:11:10,913 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:11:10,914 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:11:10,918 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:11:10,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10 WrapperNode [2023-08-23 23:11:10,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:11:10,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:11:10,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:11:10,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:11:10,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,966 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2023-08-23 23:11:10,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:11:10,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:11:10,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:11:10,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:11:10,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:10,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:11:10,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:11:10,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:11:10,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:11:10,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (1/1) ... [2023-08-23 23:11:11,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:11:11,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:11:11,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-23 23:11:11,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-23 23:11:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:11:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:11:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:11:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:11:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:11:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:11:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:11:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:11:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:11:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:11:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:11:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-23 23:11:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-23 23:11:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:11:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:11:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:11:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:11:11,071 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:11:11,179 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:11:11,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:11:11,307 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:11:11,315 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:11:11,315 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:11:11,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:11:11 BoogieIcfgContainer [2023-08-23 23:11:11,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:11:11,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:11:11,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:11:11,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:11:11,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:11:10" (1/3) ... [2023-08-23 23:11:11,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3158d802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:11:11, skipping insertion in model container [2023-08-23 23:11:11,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:10" (2/3) ... [2023-08-23 23:11:11,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3158d802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:11:11, skipping insertion in model container [2023-08-23 23:11:11,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:11:11" (3/3) ... [2023-08-23 23:11:11,322 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:11:11,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:11:11,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:11:11,332 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:11:11,378 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:11:11,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 100 transitions, 220 flow [2023-08-23 23:11:11,452 INFO L124 PetriNetUnfolderBase]: 2/96 cut-off events. [2023-08-23 23:11:11,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:11:11,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 2/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-23 23:11:11,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 100 transitions, 220 flow [2023-08-23 23:11:11,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 82 transitions, 176 flow [2023-08-23 23:11:11,460 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:11:11,465 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 82 transitions, 176 flow [2023-08-23 23:11:11,467 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 82 transitions, 176 flow [2023-08-23 23:11:11,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 82 transitions, 176 flow [2023-08-23 23:11:11,486 INFO L124 PetriNetUnfolderBase]: 1/82 cut-off events. [2023-08-23 23:11:11,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:11:11,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 1/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 45 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-23 23:11:11,488 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-08-23 23:11:13,301 INFO L134 LiptonReduction]: Checked pairs total: 2647 [2023-08-23 23:11:13,301 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-08-23 23:11:13,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:11:13,314 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;@1f4c4134, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:11:13,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-23 23:11:13,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:11:13,323 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-23 23:11:13,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:11:13,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:13,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:13,324 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 2 more)] === [2023-08-23 23:11:13,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:13,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1399399724, now seen corresponding path program 1 times [2023-08-23 23:11:13,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:13,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610432869] [2023-08-23 23:11:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:13,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:13,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610432869] [2023-08-23 23:11:13,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610432869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:13,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:13,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:11:13,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35597351] [2023-08-23 23:11:13,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:11:13,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:11:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:11:13,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 164 [2023-08-23 23:11:13,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:13,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:13,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 164 [2023-08-23 23:11:13,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:13,936 INFO L124 PetriNetUnfolderBase]: 1299/1851 cut-off events. [2023-08-23 23:11:13,936 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-08-23 23:11:13,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 1851 events. 1299/1851 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7514 event pairs, 339 based on Foata normal form. 9/1860 useless extension candidates. Maximal degree in co-relation 3826. Up to 1795 conditions per place. [2023-08-23 23:11:13,948 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 30 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-08-23 23:11:13,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 153 flow [2023-08-23 23:11:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:11:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:11:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-08-23 23:11:13,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813008130081301 [2023-08-23 23:11:13,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-08-23 23:11:13,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-08-23 23:11:13,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:13,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-08-23 23:11:13,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:13,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:13,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:13,976 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 286 transitions. [2023-08-23 23:11:13,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 153 flow [2023-08-23 23:11:13,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-23 23:11:13,980 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 67 flow [2023-08-23 23:11:13,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-23 23:11:13,983 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-08-23 23:11:13,984 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 67 flow [2023-08-23 23:11:13,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:13,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:13,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:13,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:11:13,984 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 2 more)] === [2023-08-23 23:11:13,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 431717755, now seen corresponding path program 1 times [2023-08-23 23:11:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:13,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25909963] [2023-08-23 23:11:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:13,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:14,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:14,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25909963] [2023-08-23 23:11:14,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25909963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:14,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:14,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:11:14,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494489892] [2023-08-23 23:11:14,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:14,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:14,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 164 [2023-08-23 23:11:14,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:14,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 164 [2023-08-23 23:11:14,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:14,251 INFO L124 PetriNetUnfolderBase]: 1218/1743 cut-off events. [2023-08-23 23:11:14,251 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2023-08-23 23:11:14,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 1743 events. 1218/1743 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6797 event pairs, 261 based on Foata normal form. 27/1770 useless extension candidates. Maximal degree in co-relation 4001. Up to 1426 conditions per place. [2023-08-23 23:11:14,258 INFO L140 encePairwiseOnDemand]: 161/164 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-23 23:11:14,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 149 flow [2023-08-23 23:11:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:11:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:11:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-23 23:11:14,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752032520325203 [2023-08-23 23:11:14,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-23 23:11:14,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-23 23:11:14,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:14,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-23 23:11:14,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,262 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states and 283 transitions. [2023-08-23 23:11:14,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 149 flow [2023-08-23 23:11:14,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:11:14,264 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 75 flow [2023-08-23 23:11:14,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2023-08-23 23:11:14,265 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-23 23:11:14,265 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 75 flow [2023-08-23 23:11:14,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:14,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:14,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:11:14,266 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 2 more)] === [2023-08-23 23:11:14,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash 431717910, now seen corresponding path program 1 times [2023-08-23 23:11:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:14,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157232232] [2023-08-23 23:11:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:14,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157232232] [2023-08-23 23:11:14,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157232232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:14,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:14,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:11:14,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935889933] [2023-08-23 23:11:14,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:14,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:14,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:14,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 164 [2023-08-23 23:11:14,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:14,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 164 [2023-08-23 23:11:14,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:14,508 INFO L124 PetriNetUnfolderBase]: 1426/2036 cut-off events. [2023-08-23 23:11:14,508 INFO L125 PetriNetUnfolderBase]: For 700/700 co-relation queries the response was YES. [2023-08-23 23:11:14,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 2036 events. 1426/2036 cut-off events. For 700/700 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8511 event pairs, 154 based on Foata normal form. 36/2072 useless extension candidates. Maximal degree in co-relation 4860. Up to 1310 conditions per place. [2023-08-23 23:11:14,518 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 51 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-08-23 23:11:14,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 64 transitions, 323 flow [2023-08-23 23:11:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:11:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:11:14,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2023-08-23 23:11:14,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-08-23 23:11:14,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2023-08-23 23:11:14,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2023-08-23 23:11:14,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:14,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2023-08-23 23:11:14,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,524 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 75 flow. Second operand 5 states and 474 transitions. [2023-08-23 23:11:14,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 64 transitions, 323 flow [2023-08-23 23:11:14,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 64 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:11:14,527 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 166 flow [2023-08-23 23:11:14,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-23 23:11:14,528 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-23 23:11:14,530 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 166 flow [2023-08-23 23:11:14,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:14,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:14,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:11:14,531 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 2 more)] === [2023-08-23 23:11:14,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 498328723, now seen corresponding path program 1 times [2023-08-23 23:11:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088706192] [2023-08-23 23:11:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:14,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:14,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:14,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088706192] [2023-08-23 23:11:14,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088706192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:14,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:14,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:11:14,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873065469] [2023-08-23 23:11:14,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:14,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:14,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:14,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:14,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 164 [2023-08-23 23:11:14,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:14,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 164 [2023-08-23 23:11:14,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:14,774 INFO L124 PetriNetUnfolderBase]: 1356/1942 cut-off events. [2023-08-23 23:11:14,774 INFO L125 PetriNetUnfolderBase]: For 2189/2189 co-relation queries the response was YES. [2023-08-23 23:11:14,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6164 conditions, 1942 events. 1356/1942 cut-off events. For 2189/2189 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8022 event pairs, 534 based on Foata normal form. 24/1966 useless extension candidates. Maximal degree in co-relation 6148. Up to 1643 conditions per place. [2023-08-23 23:11:14,782 INFO L140 encePairwiseOnDemand]: 161/164 looper letters, 42 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2023-08-23 23:11:14,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 318 flow [2023-08-23 23:11:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:11:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:11:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-23 23:11:14,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-23 23:11:14,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-23 23:11:14,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-23 23:11:14,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:14,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-23 23:11:14,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,785 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 166 flow. Second operand 3 states and 287 transitions. [2023-08-23 23:11:14,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 318 flow [2023-08-23 23:11:14,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:11:14,787 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 179 flow [2023-08-23 23:11:14,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-23 23:11:14,788 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-23 23:11:14,788 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 179 flow [2023-08-23 23:11:14,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:14,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:14,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:11:14,789 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 2 more)] === [2023-08-23 23:11:14,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash 532631463, now seen corresponding path program 1 times [2023-08-23 23:11:14,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:14,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19539804] [2023-08-23 23:11:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:14,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:14,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19539804] [2023-08-23 23:11:14,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19539804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:14,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:14,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:11:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121614371] [2023-08-23 23:11:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:14,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:14,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:14,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 164 [2023-08-23 23:11:14,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:14,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:14,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 164 [2023-08-23 23:11:14,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:15,024 INFO L124 PetriNetUnfolderBase]: 1548/2213 cut-off events. [2023-08-23 23:11:15,025 INFO L125 PetriNetUnfolderBase]: For 3753/3753 co-relation queries the response was YES. [2023-08-23 23:11:15,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7022 conditions, 2213 events. 1548/2213 cut-off events. For 3753/3753 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9118 event pairs, 137 based on Foata normal form. 27/2240 useless extension candidates. Maximal degree in co-relation 7004. Up to 1128 conditions per place. [2023-08-23 23:11:15,036 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 60 selfloop transitions, 20 changer transitions 0/80 dead transitions. [2023-08-23 23:11:15,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 80 transitions, 592 flow [2023-08-23 23:11:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:11:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:11:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2023-08-23 23:11:15,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5682926829268292 [2023-08-23 23:11:15,037 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 466 transitions. [2023-08-23 23:11:15,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 466 transitions. [2023-08-23 23:11:15,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:15,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 466 transitions. [2023-08-23 23:11:15,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,041 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,041 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 179 flow. Second operand 5 states and 466 transitions. [2023-08-23 23:11:15,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 80 transitions, 592 flow [2023-08-23 23:11:15,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 80 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:11:15,046 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 380 flow [2023-08-23 23:11:15,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2023-08-23 23:11:15,048 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-08-23 23:11:15,048 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 380 flow [2023-08-23 23:11:15,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:15,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:15,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:11:15,048 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 2 more)] === [2023-08-23 23:11:15,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash -887642420, now seen corresponding path program 1 times [2023-08-23 23:11:15,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:15,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255542051] [2023-08-23 23:11:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:15,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:15,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:15,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255542051] [2023-08-23 23:11:15,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255542051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:15,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:15,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:11:15,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226332461] [2023-08-23 23:11:15,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:15,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:11:15,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:11:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:11:15,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 164 [2023-08-23 23:11:15,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 380 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:15,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 164 [2023-08-23 23:11:15,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:15,319 INFO L124 PetriNetUnfolderBase]: 1811/2614 cut-off events. [2023-08-23 23:11:15,319 INFO L125 PetriNetUnfolderBase]: For 7605/7605 co-relation queries the response was YES. [2023-08-23 23:11:15,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9473 conditions, 2614 events. 1811/2614 cut-off events. For 7605/7605 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11026 event pairs, 414 based on Foata normal form. 78/2692 useless extension candidates. Maximal degree in co-relation 9452. Up to 938 conditions per place. [2023-08-23 23:11:15,328 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 44 selfloop transitions, 8 changer transitions 25/77 dead transitions. [2023-08-23 23:11:15,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 700 flow [2023-08-23 23:11:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:11:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:11:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2023-08-23 23:11:15,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2023-08-23 23:11:15,329 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2023-08-23 23:11:15,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2023-08-23 23:11:15,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:15,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2023-08-23 23:11:15,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,331 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,331 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 380 flow. Second operand 4 states and 368 transitions. [2023-08-23 23:11:15,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 700 flow [2023-08-23 23:11:15,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:11:15,336 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 263 flow [2023-08-23 23:11:15,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-08-23 23:11:15,337 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-08-23 23:11:15,337 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 263 flow [2023-08-23 23:11:15,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:15,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:15,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:11:15,337 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 2 more)] === [2023-08-23 23:11:15,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash -668304170, now seen corresponding path program 1 times [2023-08-23 23:11:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:15,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828222770] [2023-08-23 23:11:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:15,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:15,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828222770] [2023-08-23 23:11:15,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828222770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:15,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:15,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:11:15,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799440466] [2023-08-23 23:11:15,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:15,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:15,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:15,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-08-23 23:11:15,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:15,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-08-23 23:11:15,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:15,512 INFO L124 PetriNetUnfolderBase]: 784/1203 cut-off events. [2023-08-23 23:11:15,513 INFO L125 PetriNetUnfolderBase]: For 4440/4492 co-relation queries the response was YES. [2023-08-23 23:11:15,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 1203 events. 784/1203 cut-off events. For 4440/4492 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5185 event pairs, 320 based on Foata normal form. 54/1229 useless extension candidates. Maximal degree in co-relation 4308. Up to 510 conditions per place. [2023-08-23 23:11:15,517 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 35 selfloop transitions, 6 changer transitions 15/57 dead transitions. [2023-08-23 23:11:15,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 481 flow [2023-08-23 23:11:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:11:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:11:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2023-08-23 23:11:15,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5960365853658537 [2023-08-23 23:11:15,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2023-08-23 23:11:15,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2023-08-23 23:11:15,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:15,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2023-08-23 23:11:15,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,522 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 263 flow. Second operand 4 states and 391 transitions. [2023-08-23 23:11:15,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 481 flow [2023-08-23 23:11:15,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 415 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-23 23:11:15,530 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 176 flow [2023-08-23 23:11:15,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2023-08-23 23:11:15,531 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-23 23:11:15,531 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 176 flow [2023-08-23 23:11:15,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:15,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:15,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:11:15,533 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 2 more)] === [2023-08-23 23:11:15,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2142467287, now seen corresponding path program 1 times [2023-08-23 23:11:15,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:15,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587812257] [2023-08-23 23:11:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:15,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587812257] [2023-08-23 23:11:15,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587812257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:15,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:15,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:11:15,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711745819] [2023-08-23 23:11:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:15,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:15,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:15,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:15,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 164 [2023-08-23 23:11:15,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:15,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 164 [2023-08-23 23:11:15,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:15,681 INFO L124 PetriNetUnfolderBase]: 378/617 cut-off events. [2023-08-23 23:11:15,681 INFO L125 PetriNetUnfolderBase]: For 5430/5739 co-relation queries the response was YES. [2023-08-23 23:11:15,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 617 events. 378/617 cut-off events. For 5430/5739 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2708 event pairs, 110 based on Foata normal form. 35/605 useless extension candidates. Maximal degree in co-relation 2410. Up to 391 conditions per place. [2023-08-23 23:11:15,684 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 60 selfloop transitions, 9 changer transitions 2/73 dead transitions. [2023-08-23 23:11:15,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 635 flow [2023-08-23 23:11:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:11:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:11:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2023-08-23 23:11:15,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-08-23 23:11:15,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2023-08-23 23:11:15,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2023-08-23 23:11:15,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:15,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2023-08-23 23:11:15,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,688 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,688 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 176 flow. Second operand 5 states and 474 transitions. [2023-08-23 23:11:15,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 635 flow [2023-08-23 23:11:15,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 564 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-23 23:11:15,691 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 222 flow [2023-08-23 23:11:15,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-08-23 23:11:15,692 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-08-23 23:11:15,692 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 222 flow [2023-08-23 23:11:15,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:15,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 23:11:15,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-23 23:11:15,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1784806503, now seen corresponding path program 1 times [2023-08-23 23:11:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:15,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113008940] [2023-08-23 23:11:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113008940] [2023-08-23 23:11:15,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113008940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:15,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:15,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:11:15,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368453380] [2023-08-23 23:11:15,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:15,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:11:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:15,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:11:15,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:11:15,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 164 [2023-08-23 23:11:15,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:15,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 164 [2023-08-23 23:11:15,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:15,872 INFO L124 PetriNetUnfolderBase]: 348/595 cut-off events. [2023-08-23 23:11:15,873 INFO L125 PetriNetUnfolderBase]: For 3943/4292 co-relation queries the response was YES. [2023-08-23 23:11:15,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 595 events. 348/595 cut-off events. For 3943/4292 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2706 event pairs, 37 based on Foata normal form. 75/630 useless extension candidates. Maximal degree in co-relation 2723. Up to 348 conditions per place. [2023-08-23 23:11:15,880 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 73 selfloop transitions, 17 changer transitions 3/95 dead transitions. [2023-08-23 23:11:15,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 95 transitions, 821 flow [2023-08-23 23:11:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:11:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:11:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions. [2023-08-23 23:11:15,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766550522648084 [2023-08-23 23:11:15,882 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions. [2023-08-23 23:11:15,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions. [2023-08-23 23:11:15,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:15,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions. [2023-08-23 23:11:15,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,884 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,885 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 222 flow. Second operand 7 states and 662 transitions. [2023-08-23 23:11:15,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 95 transitions, 821 flow [2023-08-23 23:11:15,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 95 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:11:15,888 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 338 flow [2023-08-23 23:11:15,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-08-23 23:11:15,889 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2023-08-23 23:11:15,889 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 338 flow [2023-08-23 23:11:15,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:15,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:15,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 23:11:15,890 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-23 23:11:15,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash 145302763, now seen corresponding path program 1 times [2023-08-23 23:11:15,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:15,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112364975] [2023-08-23 23:11:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:15,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112364975] [2023-08-23 23:11:15,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112364975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:15,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:15,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:11:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186786632] [2023-08-23 23:11:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:15,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:11:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:11:15,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:11:15,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 164 [2023-08-23 23:11:15,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:15,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:15,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 164 [2023-08-23 23:11:15,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:16,096 INFO L124 PetriNetUnfolderBase]: 565/972 cut-off events. [2023-08-23 23:11:16,096 INFO L125 PetriNetUnfolderBase]: For 5561/5561 co-relation queries the response was YES. [2023-08-23 23:11:16,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5503 conditions, 972 events. 565/972 cut-off events. For 5561/5561 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4597 event pairs, 71 based on Foata normal form. 15/987 useless extension candidates. Maximal degree in co-relation 5478. Up to 562 conditions per place. [2023-08-23 23:11:16,102 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 46 selfloop transitions, 8 changer transitions 39/93 dead transitions. [2023-08-23 23:11:16,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 93 transitions, 946 flow [2023-08-23 23:11:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:11:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:11:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2023-08-23 23:11:16,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457317073170732 [2023-08-23 23:11:16,103 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2023-08-23 23:11:16,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2023-08-23 23:11:16,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:16,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2023-08-23 23:11:16,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,106 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 338 flow. Second operand 6 states and 537 transitions. [2023-08-23 23:11:16,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 93 transitions, 946 flow [2023-08-23 23:11:16,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 93 transitions, 805 flow, removed 47 selfloop flow, removed 3 redundant places. [2023-08-23 23:11:16,115 INFO L231 Difference]: Finished difference. Result has 62 places, 35 transitions, 275 flow [2023-08-23 23:11:16,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=62, PETRI_TRANSITIONS=35} [2023-08-23 23:11:16,116 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2023-08-23 23:11:16,116 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 35 transitions, 275 flow [2023-08-23 23:11:16,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:16,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:16,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-23 23:11:16,117 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-23 23:11:16,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash -997707172, now seen corresponding path program 1 times [2023-08-23 23:11:16,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:16,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134665314] [2023-08-23 23:11:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:16,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:16,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134665314] [2023-08-23 23:11:16,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134665314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:16,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:16,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:11:16,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755750862] [2023-08-23 23:11:16,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:16,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:11:16,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:16,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:11:16,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:11:16,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 164 [2023-08-23 23:11:16,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 35 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:16,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 164 [2023-08-23 23:11:16,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:16,278 INFO L124 PetriNetUnfolderBase]: 210/399 cut-off events. [2023-08-23 23:11:16,278 INFO L125 PetriNetUnfolderBase]: For 3293/3473 co-relation queries the response was YES. [2023-08-23 23:11:16,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2031 conditions, 399 events. 210/399 cut-off events. For 3293/3473 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1748 event pairs, 13 based on Foata normal form. 55/437 useless extension candidates. Maximal degree in co-relation 2004. Up to 230 conditions per place. [2023-08-23 23:11:16,280 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 52 selfloop transitions, 18 changer transitions 7/80 dead transitions. [2023-08-23 23:11:16,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 810 flow [2023-08-23 23:11:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:11:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:11:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 658 transitions. [2023-08-23 23:11:16,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573170731707317 [2023-08-23 23:11:16,282 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 658 transitions. [2023-08-23 23:11:16,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 658 transitions. [2023-08-23 23:11:16,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:16,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 658 transitions. [2023-08-23 23:11:16,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,285 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,285 INFO L175 Difference]: Start difference. First operand has 62 places, 35 transitions, 275 flow. Second operand 7 states and 658 transitions. [2023-08-23 23:11:16,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 810 flow [2023-08-23 23:11:16,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 748 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-23 23:11:16,290 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 389 flow [2023-08-23 23:11:16,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-08-23 23:11:16,290 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-08-23 23:11:16,290 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 389 flow [2023-08-23 23:11:16,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:16,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:16,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-23 23:11:16,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-23 23:11:16,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 9067965, now seen corresponding path program 1 times [2023-08-23 23:11:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:16,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729928614] [2023-08-23 23:11:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:16,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:16,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729928614] [2023-08-23 23:11:16,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729928614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:16,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:16,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:11:16,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333766679] [2023-08-23 23:11:16,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:16,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-23 23:11:16,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:16,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-23 23:11:16,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-23 23:11:16,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 164 [2023-08-23 23:11:16,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:16,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 164 [2023-08-23 23:11:16,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:16,462 INFO L124 PetriNetUnfolderBase]: 196/377 cut-off events. [2023-08-23 23:11:16,462 INFO L125 PetriNetUnfolderBase]: For 1782/1882 co-relation queries the response was YES. [2023-08-23 23:11:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2102 conditions, 377 events. 196/377 cut-off events. For 1782/1882 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1645 event pairs, 9 based on Foata normal form. 29/390 useless extension candidates. Maximal degree in co-relation 2075. Up to 216 conditions per place. [2023-08-23 23:11:16,463 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 25 selfloop transitions, 17 changer transitions 37/81 dead transitions. [2023-08-23 23:11:16,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 834 flow [2023-08-23 23:11:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-23 23:11:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-23 23:11:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 829 transitions. [2023-08-23 23:11:16,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616531165311653 [2023-08-23 23:11:16,466 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 829 transitions. [2023-08-23 23:11:16,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 829 transitions. [2023-08-23 23:11:16,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:16,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 829 transitions. [2023-08-23 23:11:16,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.11111111111111) internal successors, (829), 9 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,469 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,469 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 389 flow. Second operand 9 states and 829 transitions. [2023-08-23 23:11:16,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 834 flow [2023-08-23 23:11:16,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 81 transitions, 769 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-23 23:11:16,475 INFO L231 Difference]: Finished difference. Result has 70 places, 32 transitions, 275 flow [2023-08-23 23:11:16,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=275, PETRI_PLACES=70, PETRI_TRANSITIONS=32} [2023-08-23 23:11:16,476 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-08-23 23:11:16,476 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 32 transitions, 275 flow [2023-08-23 23:11:16,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:16,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:16,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-23 23:11:16,476 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-23 23:11:16,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1112343358, now seen corresponding path program 1 times [2023-08-23 23:11:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576271624] [2023-08-23 23:11:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:11:16,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:16,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576271624] [2023-08-23 23:11:16,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576271624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:16,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:16,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:11:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668594627] [2023-08-23 23:11:16,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:16,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:16,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:16,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 164 [2023-08-23 23:11:16,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 32 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:16,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 164 [2023-08-23 23:11:16,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:16,585 INFO L124 PetriNetUnfolderBase]: 87/172 cut-off events. [2023-08-23 23:11:16,585 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2023-08-23 23:11:16,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 172 events. 87/172 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 487 event pairs, 12 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 862. Up to 89 conditions per place. [2023-08-23 23:11:16,585 INFO L140 encePairwiseOnDemand]: 159/164 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-23 23:11:16,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 46 transitions, 429 flow [2023-08-23 23:11:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:11:16,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:11:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2023-08-23 23:11:16,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353658536585366 [2023-08-23 23:11:16,587 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2023-08-23 23:11:16,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2023-08-23 23:11:16,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:16,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2023-08-23 23:11:16,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,589 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,589 INFO L175 Difference]: Start difference. First operand has 70 places, 32 transitions, 275 flow. Second operand 5 states and 439 transitions. [2023-08-23 23:11:16,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 46 transitions, 429 flow [2023-08-23 23:11:16,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 320 flow, removed 24 selfloop flow, removed 13 redundant places. [2023-08-23 23:11:16,590 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-08-23 23:11:16,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-08-23 23:11:16,591 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-23 23:11:16,591 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-08-23 23:11:16,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:11:16,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-23 23:11:16,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-23 23:11:16,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-23 23:11:16,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-23 23:11:16,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-23 23:11:16,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-23 23:11:16,593 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:16,595 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:11:16,595 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:11:16,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:11:16 BasicIcfg [2023-08-23 23:11:16,597 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:11:16,597 INFO L158 Benchmark]: Toolchain (without parser) took 6013.99ms. Allocated memory was 352.3MB in the beginning and 539.0MB in the end (delta: 186.6MB). Free memory was 327.4MB in the beginning and 301.4MB in the end (delta: 26.0MB). Peak memory consumption was 212.9MB. Max. memory is 16.0GB. [2023-08-23 23:11:16,597 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory was 328.5MB in the beginning and 328.4MB in the end (delta: 83.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:11:16,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.88ms. Allocated memory is still 352.3MB. Free memory was 327.1MB in the beginning and 306.7MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-23 23:11:16,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.41ms. Allocated memory is still 352.3MB. Free memory was 306.4MB in the beginning and 304.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:11:16,598 INFO L158 Benchmark]: Boogie Preprocessor took 29.96ms. Allocated memory is still 352.3MB. Free memory was 304.3MB in the beginning and 303.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:11:16,598 INFO L158 Benchmark]: RCFGBuilder took 319.51ms. Allocated memory is still 352.3MB. Free memory was 303.0MB in the beginning and 288.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-23 23:11:16,598 INFO L158 Benchmark]: TraceAbstraction took 5278.91ms. Allocated memory was 352.3MB in the beginning and 539.0MB in the end (delta: 186.6MB). Free memory was 287.6MB in the beginning and 301.4MB in the end (delta: -13.9MB). Peak memory consumption was 173.1MB. Max. memory is 16.0GB. [2023-08-23 23:11:16,599 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory was 328.5MB in the beginning and 328.4MB in the end (delta: 83.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 334.88ms. Allocated memory is still 352.3MB. Free memory was 327.1MB in the beginning and 306.7MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.41ms. Allocated memory is still 352.3MB. Free memory was 306.4MB in the beginning and 304.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.96ms. Allocated memory is still 352.3MB. Free memory was 304.3MB in the beginning and 303.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 319.51ms. Allocated memory is still 352.3MB. Free memory was 303.0MB in the beginning and 288.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5278.91ms. Allocated memory was 352.3MB in the beginning and 539.0MB in the end (delta: 186.6MB). Free memory was 287.6MB in the beginning and 301.4MB in the end (delta: -13.9MB). Peak memory consumption was 173.1MB. 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: 1.8s, 94 PlacesBefore, 33 PlacesAfterwards, 82 TransitionsBefore, 20 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2647 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1627, independent: 1537, independent conditional: 0, independent unconditional: 1537, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 816, independent: 783, independent conditional: 0, independent unconditional: 783, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1627, independent: 754, independent conditional: 0, independent unconditional: 754, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 816, unknown conditional: 0, unknown unconditional: 816] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, 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 9 procedures, 129 locations, 5 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: 5.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 300 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 300 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 825 IncrementalHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 13 mSDtfsCounter, 825 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=11, InterpolantAutomatonStates: 66, 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, 1.1s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2023-08-23 23:11:16,611 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...