/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:35:16,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:35:16,128 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 05:35:16,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:35:16,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:35:16,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:35:16,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:35:16,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:35:16,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:35:16,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:35:16,159 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:35:16,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:35:16,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:35:16,159 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:35:16,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:35:16,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:35:16,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:35:16,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:35:16,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:35:16,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:35:16,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:35:16,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:35:16,161 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:35:16,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:35:16,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:35:16,162 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:35:16,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:35:16,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:35:16,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:35:16,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:35:16,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:35:16,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:35:16,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:35:16,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:35:16,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:35:16,164 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:35:16,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:35:16,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:35:16,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:35:16,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:35:16,382 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:35:16,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:35:17,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:35:17,491 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:35:17,492 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:35:17,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9723ca098/f57ab5dbd4f84b469939779c5910f0a7/FLAG5fe7e34a2 [2023-08-24 05:35:17,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9723ca098/f57ab5dbd4f84b469939779c5910f0a7 [2023-08-24 05:35:17,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:35:17,512 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:35:17,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:35:17,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:35:17,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:35:17,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14212e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17, skipping insertion in model container [2023-08-24 05:35:17,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,547 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:35:17,664 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 05:35:17,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:35:17,798 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:35:17,809 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 05:35:17,824 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:35:17,826 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:35:17,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:35:17,871 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:35:17,871 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:35:17,876 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:35:17,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17 WrapperNode [2023-08-24 05:35:17,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:35:17,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:35:17,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:35:17,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:35:17,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,922 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-24 05:35:17,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:35:17,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:35:17,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:35:17,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:35:17,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:35:17,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:35:17,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:35:17,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:35:17,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (1/1) ... [2023-08-24 05:35:17,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:35:17,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:35:17,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 05:35:18,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 05:35:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:35:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:35:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:35:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:35:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:35:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:35:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:35:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:35:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:35:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:35:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:35:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:35:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:35:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:35:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:35:18,013 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 05:35:18,099 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:35:18,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:35:18,259 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:35:18,263 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:35:18,263 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:35:18,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:35:18 BoogieIcfgContainer [2023-08-24 05:35:18,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:35:18,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:35:18,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:35:18,268 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:35:18,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:35:17" (1/3) ... [2023-08-24 05:35:18,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e2c52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:35:18, skipping insertion in model container [2023-08-24 05:35:18,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:35:17" (2/3) ... [2023-08-24 05:35:18,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e2c52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:35:18, skipping insertion in model container [2023-08-24 05:35:18,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:35:18" (3/3) ... [2023-08-24 05:35:18,270 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:35:18,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:35:18,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:35:18,282 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:35:18,346 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:35:18,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-24 05:35:18,420 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2023-08-24 05:35:18,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:35:18,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 05:35:18,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-24 05:35:18,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-24 05:35:18,431 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:35:18,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-24 05:35:18,450 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-24 05:35:18,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-24 05:35:18,472 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-08-24 05:35:18,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:35:18,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 05:35:18,475 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 05:35:20,084 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-24 05:35:20,084 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-24 05:35:20,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:35:20,097 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;@23a89086, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:35:20,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 05:35:20,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:35:20,100 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 05:35:20,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:35:20,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:20,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:20,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:35:20,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash -856294997, now seen corresponding path program 1 times [2023-08-24 05:35:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:20,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957993691] [2023-08-24 05:35:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:20,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957993691] [2023-08-24 05:35:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957993691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:20,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:20,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:35:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484264973] [2023-08-24 05:35:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:35:20,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:20,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:35:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:35:20,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-24 05:35:20,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:20,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-24 05:35:20,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:20,576 INFO L124 PetriNetUnfolderBase]: 562/908 cut-off events. [2023-08-24 05:35:20,576 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 05:35:20,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 908 events. 562/908 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3966 event pairs, 238 based on Foata normal form. 53/961 useless extension candidates. Maximal degree in co-relation 1862. Up to 464 conditions per place. [2023-08-24 05:35:20,581 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-24 05:35:20,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-08-24 05:35:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:35:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:35:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-24 05:35:20,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587529976019184 [2023-08-24 05:35:20,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-24 05:35:20,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-24 05:35:20,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:20,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-24 05:35:20,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,597 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 233 transitions. [2023-08-24 05:35:20,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-08-24 05:35:20,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:35:20,600 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-08-24 05:35:20,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-24 05:35:20,604 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 05:35:20,605 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-08-24 05:35:20,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:20,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:20,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:35:20,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:35:20,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash -775341748, now seen corresponding path program 1 times [2023-08-24 05:35:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091868685] [2023-08-24 05:35:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:20,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091868685] [2023-08-24 05:35:20,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091868685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:20,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:20,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:35:20,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895068903] [2023-08-24 05:35:20,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:20,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:20,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:20,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-24 05:35:20,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:20,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-24 05:35:20,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:20,785 INFO L124 PetriNetUnfolderBase]: 521/845 cut-off events. [2023-08-24 05:35:20,786 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2023-08-24 05:35:20,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2414 conditions, 845 events. 521/845 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3641 event pairs, 63 based on Foata normal form. 7/852 useless extension candidates. Maximal degree in co-relation 2402. Up to 390 conditions per place. [2023-08-24 05:35:20,790 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-08-24 05:35:20,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 244 flow [2023-08-24 05:35:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:35:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:35:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-08-24 05:35:20,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503597122302158 [2023-08-24 05:35:20,795 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-08-24 05:35:20,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-08-24 05:35:20,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:20,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-08-24 05:35:20,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,800 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,800 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 306 transitions. [2023-08-24 05:35:20,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 244 flow [2023-08-24 05:35:20,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:35:20,805 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-08-24 05:35:20,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-24 05:35:20,806 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-24 05:35:20,807 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-08-24 05:35:20,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:20,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:20,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:35:20,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:35:20,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1734208010, now seen corresponding path program 1 times [2023-08-24 05:35:20,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:20,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233093979] [2023-08-24 05:35:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233093979] [2023-08-24 05:35:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233093979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:20,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:20,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:35:20,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19804044] [2023-08-24 05:35:20,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:20,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:20,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:20,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:20,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-24 05:35:20,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:20,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-24 05:35:20,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:20,989 INFO L124 PetriNetUnfolderBase]: 493/802 cut-off events. [2023-08-24 05:35:20,989 INFO L125 PetriNetUnfolderBase]: For 762/762 co-relation queries the response was YES. [2023-08-24 05:35:20,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 802 events. 493/802 cut-off events. For 762/762 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3246 event pairs, 104 based on Foata normal form. 9/811 useless extension candidates. Maximal degree in co-relation 2548. Up to 308 conditions per place. [2023-08-24 05:35:20,993 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 32 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2023-08-24 05:35:20,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 304 flow [2023-08-24 05:35:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:35:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:35:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-08-24 05:35:20,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431654676258992 [2023-08-24 05:35:20,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-08-24 05:35:20,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-08-24 05:35:20,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:20,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-08-24 05:35:20,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,997 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:20,997 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 4 states and 302 transitions. [2023-08-24 05:35:20,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 304 flow [2023-08-24 05:35:20,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:35:20,999 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 240 flow [2023-08-24 05:35:20,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-24 05:35:21,000 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-24 05:35:21,002 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 240 flow [2023-08-24 05:35:21,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:21,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:21,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:35:21,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:35:21,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1759548929, now seen corresponding path program 1 times [2023-08-24 05:35:21,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:21,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514865494] [2023-08-24 05:35:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514865494] [2023-08-24 05:35:21,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514865494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:21,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:35:21,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840136051] [2023-08-24 05:35:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:21,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:21,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:21,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:21,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-24 05:35:21,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:21,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-24 05:35:21,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:21,192 INFO L124 PetriNetUnfolderBase]: 478/778 cut-off events. [2023-08-24 05:35:21,193 INFO L125 PetriNetUnfolderBase]: For 1350/1350 co-relation queries the response was YES. [2023-08-24 05:35:21,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 778 events. 478/778 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3185 event pairs, 67 based on Foata normal form. 3/781 useless extension candidates. Maximal degree in co-relation 2888. Up to 388 conditions per place. [2023-08-24 05:35:21,196 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 38 selfloop transitions, 22 changer transitions 0/60 dead transitions. [2023-08-24 05:35:21,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 512 flow [2023-08-24 05:35:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:35:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:35:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-08-24 05:35:21,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593525179856115 [2023-08-24 05:35:21,198 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-08-24 05:35:21,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-08-24 05:35:21,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:21,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-08-24 05:35:21,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,200 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,200 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 240 flow. Second operand 4 states and 311 transitions. [2023-08-24 05:35:21,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 512 flow [2023-08-24 05:35:21,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:35:21,203 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 435 flow [2023-08-24 05:35:21,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-24 05:35:21,204 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-24 05:35:21,204 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 435 flow [2023-08-24 05:35:21,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:21,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:21,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:35:21,205 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:35:21,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:21,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2074098976, now seen corresponding path program 1 times [2023-08-24 05:35:21,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:21,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544640861] [2023-08-24 05:35:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:21,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:21,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544640861] [2023-08-24 05:35:21,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544640861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:21,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:21,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:35:21,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747837401] [2023-08-24 05:35:21,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:21,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:21,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:21,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:21,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:21,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-24 05:35:21,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:21,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-24 05:35:21,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:21,390 INFO L124 PetriNetUnfolderBase]: 557/953 cut-off events. [2023-08-24 05:35:21,390 INFO L125 PetriNetUnfolderBase]: For 3529/3546 co-relation queries the response was YES. [2023-08-24 05:35:21,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 953 events. 557/953 cut-off events. For 3529/3546 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4570 event pairs, 219 based on Foata normal form. 47/997 useless extension candidates. Maximal degree in co-relation 3995. Up to 499 conditions per place. [2023-08-24 05:35:21,394 INFO L140 encePairwiseOnDemand]: 135/139 looper letters, 36 selfloop transitions, 9 changer transitions 21/72 dead transitions. [2023-08-24 05:35:21,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 72 transitions, 779 flow [2023-08-24 05:35:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:35:21,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:35:21,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-08-24 05:35:21,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-08-24 05:35:21,396 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-08-24 05:35:21,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-08-24 05:35:21,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:21,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-08-24 05:35:21,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,398 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 435 flow. Second operand 5 states and 394 transitions. [2023-08-24 05:35:21,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 72 transitions, 779 flow [2023-08-24 05:35:21,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 779 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 05:35:21,404 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 459 flow [2023-08-24 05:35:21,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-24 05:35:21,405 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-08-24 05:35:21,405 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 459 flow [2023-08-24 05:35:21,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:21,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:21,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:35:21,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:35:21,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1118949462, now seen corresponding path program 1 times [2023-08-24 05:35:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:21,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108922246] [2023-08-24 05:35:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:21,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:21,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:21,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108922246] [2023-08-24 05:35:21,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108922246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:21,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:21,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:35:21,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092443916] [2023-08-24 05:35:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:21,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:21,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:21,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-24 05:35:21,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 459 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:21,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-24 05:35:21,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:21,550 INFO L124 PetriNetUnfolderBase]: 300/570 cut-off events. [2023-08-24 05:35:21,550 INFO L125 PetriNetUnfolderBase]: For 3693/3774 co-relation queries the response was YES. [2023-08-24 05:35:21,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 570 events. 300/570 cut-off events. For 3693/3774 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2957 event pairs, 44 based on Foata normal form. 82/644 useless extension candidates. Maximal degree in co-relation 2394. Up to 292 conditions per place. [2023-08-24 05:35:21,554 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 63 selfloop transitions, 8 changer transitions 2/89 dead transitions. [2023-08-24 05:35:21,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 89 transitions, 1055 flow [2023-08-24 05:35:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:35:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:35:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-08-24 05:35:21,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-08-24 05:35:21,555 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-08-24 05:35:21,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-08-24 05:35:21,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:21,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-08-24 05:35:21,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,557 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,557 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 459 flow. Second operand 5 states and 394 transitions. [2023-08-24 05:35:21,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 89 transitions, 1055 flow [2023-08-24 05:35:21,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 1017 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-24 05:35:21,562 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 497 flow [2023-08-24 05:35:21,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=497, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2023-08-24 05:35:21,562 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-24 05:35:21,563 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 497 flow [2023-08-24 05:35:21,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:21,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:21,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:35:21,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:35:21,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash -328862597, now seen corresponding path program 1 times [2023-08-24 05:35:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:21,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429697161] [2023-08-24 05:35:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:21,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:21,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:21,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429697161] [2023-08-24 05:35:21,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429697161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:21,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:21,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:35:21,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289738021] [2023-08-24 05:35:21,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:21,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:35:21,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:35:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:35:21,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-24 05:35:21,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 497 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:21,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-24 05:35:21,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:21,753 INFO L124 PetriNetUnfolderBase]: 273/542 cut-off events. [2023-08-24 05:35:21,753 INFO L125 PetriNetUnfolderBase]: For 3183/3375 co-relation queries the response was YES. [2023-08-24 05:35:21,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2719 conditions, 542 events. 273/542 cut-off events. For 3183/3375 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2929 event pairs, 15 based on Foata normal form. 148/682 useless extension candidates. Maximal degree in co-relation 2690. Up to 241 conditions per place. [2023-08-24 05:35:21,757 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 69 selfloop transitions, 15 changer transitions 8/108 dead transitions. [2023-08-24 05:35:21,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 1271 flow [2023-08-24 05:35:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:35:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:35:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2023-08-24 05:35:21,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566289825282631 [2023-08-24 05:35:21,758 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2023-08-24 05:35:21,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2023-08-24 05:35:21,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:21,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2023-08-24 05:35:21,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,762 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,762 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 497 flow. Second operand 7 states and 551 transitions. [2023-08-24 05:35:21,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 1271 flow [2023-08-24 05:35:21,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 108 transitions, 1267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:35:21,768 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 592 flow [2023-08-24 05:35:21,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=592, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-24 05:35:21,769 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-08-24 05:35:21,769 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 592 flow [2023-08-24 05:35:21,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:21,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:21,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:35:21,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:35:21,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash 202149215, now seen corresponding path program 1 times [2023-08-24 05:35:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:21,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798677708] [2023-08-24 05:35:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:21,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:21,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:21,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798677708] [2023-08-24 05:35:21,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798677708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:21,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:21,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:35:21,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002644638] [2023-08-24 05:35:21,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:21,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:35:21,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:21,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:35:21,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:35:21,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 139 [2023-08-24 05:35:21,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:21,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 139 [2023-08-24 05:35:21,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:21,932 INFO L124 PetriNetUnfolderBase]: 377/755 cut-off events. [2023-08-24 05:35:21,933 INFO L125 PetriNetUnfolderBase]: For 4917/4997 co-relation queries the response was YES. [2023-08-24 05:35:21,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 755 events. 377/755 cut-off events. For 4917/4997 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4201 event pairs, 106 based on Foata normal form. 35/778 useless extension candidates. Maximal degree in co-relation 4342. Up to 418 conditions per place. [2023-08-24 05:35:21,937 INFO L140 encePairwiseOnDemand]: 136/139 looper letters, 39 selfloop transitions, 7 changer transitions 19/75 dead transitions. [2023-08-24 05:35:21,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 881 flow [2023-08-24 05:35:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:35:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:35:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-24 05:35:21,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851318944844125 [2023-08-24 05:35:21,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-24 05:35:21,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-24 05:35:21,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:21,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-24 05:35:21,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,940 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 592 flow. Second operand 3 states and 244 transitions. [2023-08-24 05:35:21,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 881 flow [2023-08-24 05:35:21,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 812 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-24 05:35:21,954 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 518 flow [2023-08-24 05:35:21,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=518, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-08-24 05:35:21,956 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 32 predicate places. [2023-08-24 05:35:21,956 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 518 flow [2023-08-24 05:35:21,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:21,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:21,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:21,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:35:21,957 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 1 more)] === [2023-08-24 05:35:21,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:21,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1479944282, now seen corresponding path program 1 times [2023-08-24 05:35:21,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:21,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945543411] [2023-08-24 05:35:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:21,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:22,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945543411] [2023-08-24 05:35:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945543411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:22,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:22,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:35:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621081001] [2023-08-24 05:35:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:22,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 05:35:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 05:35:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 05:35:22,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-24 05:35:22,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 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) [2023-08-24 05:35:22,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:22,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-24 05:35:22,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:22,193 INFO L124 PetriNetUnfolderBase]: 190/418 cut-off events. [2023-08-24 05:35:22,193 INFO L125 PetriNetUnfolderBase]: For 2565/2686 co-relation queries the response was YES. [2023-08-24 05:35:22,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 418 events. 190/418 cut-off events. For 2565/2686 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2225 event pairs, 12 based on Foata normal form. 87/495 useless extension candidates. Maximal degree in co-relation 2197. Up to 121 conditions per place. [2023-08-24 05:35:22,195 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 28 selfloop transitions, 12 changer transitions 55/101 dead transitions. [2023-08-24 05:35:22,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 1293 flow [2023-08-24 05:35:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 05:35:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 05:35:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 688 transitions. [2023-08-24 05:35:22,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5499600319744204 [2023-08-24 05:35:22,197 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 688 transitions. [2023-08-24 05:35:22,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 688 transitions. [2023-08-24 05:35:22,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:22,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 688 transitions. [2023-08-24 05:35:22,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.44444444444444) internal successors, (688), 9 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:22,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:22,200 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:22,200 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 518 flow. Second operand 9 states and 688 transitions. [2023-08-24 05:35:22,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 1293 flow [2023-08-24 05:35:22,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 101 transitions, 1257 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-24 05:35:22,206 INFO L231 Difference]: Finished difference. Result has 65 places, 31 transitions, 322 flow [2023-08-24 05:35:22,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=65, PETRI_TRANSITIONS=31} [2023-08-24 05:35:22,206 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2023-08-24 05:35:22,206 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 31 transitions, 322 flow [2023-08-24 05:35:22,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 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) [2023-08-24 05:35:22,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:22,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 05:35:22,207 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 1 more)] === [2023-08-24 05:35:22,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash -422245089, now seen corresponding path program 1 times [2023-08-24 05:35:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:22,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503729929] [2023-08-24 05:35:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:35:22,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:22,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503729929] [2023-08-24 05:35:22,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503729929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:22,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:22,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:35:22,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414436988] [2023-08-24 05:35:22,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:22,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:35:22,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:22,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:35:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:35:22,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-24 05:35:22,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 31 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:22,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:22,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-24 05:35:22,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:22,312 INFO L124 PetriNetUnfolderBase]: 69/158 cut-off events. [2023-08-24 05:35:22,313 INFO L125 PetriNetUnfolderBase]: For 949/949 co-relation queries the response was YES. [2023-08-24 05:35:22,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 158 events. 69/158 cut-off events. For 949/949 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 578 event pairs, 11 based on Foata normal form. 1/159 useless extension candidates. Maximal degree in co-relation 988. Up to 125 conditions per place. [2023-08-24 05:35:22,313 INFO L140 encePairwiseOnDemand]: 136/139 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-24 05:35:22,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 38 transitions, 430 flow [2023-08-24 05:35:22,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:35:22,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:35:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-08-24 05:35:22,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269784172661871 [2023-08-24 05:35:22,314 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-08-24 05:35:22,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-08-24 05:35:22,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:22,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-08-24 05:35:22,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:22,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:22,316 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:22,316 INFO L175 Difference]: Start difference. First operand has 65 places, 31 transitions, 322 flow. Second operand 4 states and 293 transitions. [2023-08-24 05:35:22,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 38 transitions, 430 flow [2023-08-24 05:35:22,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 38 transitions, 307 flow, removed 11 selfloop flow, removed 18 redundant places. [2023-08-24 05:35:22,319 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-24 05:35:22,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-24 05:35:22,320 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-08-24 05:35:22,320 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-24 05:35:22,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:22,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 05:35:22,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 05:35:22,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 05:35:22,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 05:35:22,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 05:35:22,324 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:22,327 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:35:22,327 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:35:22,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:35:22 BasicIcfg [2023-08-24 05:35:22,330 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:35:22,330 INFO L158 Benchmark]: Toolchain (without parser) took 4818.27ms. Allocated memory was 396.4MB in the beginning and 530.6MB in the end (delta: 134.2MB). Free memory was 370.3MB in the beginning and 261.4MB in the end (delta: 108.9MB). Peak memory consumption was 245.3MB. Max. memory is 16.0GB. [2023-08-24 05:35:22,330 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 396.4MB. Free memory is still 373.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:35:22,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.71ms. Allocated memory is still 396.4MB. Free memory was 370.3MB in the beginning and 349.7MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 05:35:22,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.78ms. Allocated memory is still 396.4MB. Free memory was 349.7MB in the beginning and 347.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:35:22,331 INFO L158 Benchmark]: Boogie Preprocessor took 27.36ms. Allocated memory is still 396.4MB. Free memory was 347.6MB in the beginning and 346.7MB in the end (delta: 867.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:35:22,331 INFO L158 Benchmark]: RCFGBuilder took 313.95ms. Allocated memory is still 396.4MB. Free memory was 346.7MB in the beginning and 331.7MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 05:35:22,331 INFO L158 Benchmark]: TraceAbstraction took 4063.48ms. Allocated memory was 396.4MB in the beginning and 530.6MB in the end (delta: 134.2MB). Free memory was 330.8MB in the beginning and 261.4MB in the end (delta: 69.4MB). Peak memory consumption was 205.5MB. Max. memory is 16.0GB. [2023-08-24 05:35:22,332 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 396.4MB. Free memory is still 373.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 363.71ms. Allocated memory is still 396.4MB. Free memory was 370.3MB in the beginning and 349.7MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.78ms. Allocated memory is still 396.4MB. Free memory was 349.7MB in the beginning and 347.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.36ms. Allocated memory is still 396.4MB. Free memory was 347.6MB in the beginning and 346.7MB in the end (delta: 867.1kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 313.95ms. Allocated memory is still 396.4MB. Free memory was 346.7MB in the beginning and 331.7MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4063.48ms. Allocated memory was 396.4MB in the beginning and 530.6MB in the end (delta: 134.2MB). Free memory was 330.8MB in the beginning and 261.4MB in the end (delta: 69.4MB). Peak memory consumption was 205.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1034, independent: 957, independent conditional: 0, independent unconditional: 957, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 558, independent: 537, independent conditional: 0, independent unconditional: 537, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1034, independent: 420, independent conditional: 0, independent unconditional: 420, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 558, unknown conditional: 0, unknown unconditional: 558] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 153 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 459 IncrementalHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 19 mSDtfsCounter, 459 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=592occurred in iteration=7, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 523 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:35:22,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...