/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-symm.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:41:24,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:41:24,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:41:24,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:41:24,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:41:24,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:41:24,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:41:24,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:41:24,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:41:24,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:41:24,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:41:24,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:41:24,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:41:24,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:41:24,244 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:41:24,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:41:24,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:41:24,245 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:41:24,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:41:24,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:41:24,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:41:24,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:41:24,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:41:24,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:41:24,247 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:41:24,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:41:24,248 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:41:24,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:41:24,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:41:24,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:41:24,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:41:24,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:41:24,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:41:24,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:41:24,250 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:41:24,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:41:24,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:41:24,251 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:41:24,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:41:24,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:41:24,251 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:41:24,252 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:41:24,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:41:24,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:41:24,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:41:24,457 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:41:24,458 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:41:24,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-symm.wvr_bound2.c [2023-08-03 19:41:25,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:41:25,777 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:41:25,777 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-symm.wvr_bound2.c [2023-08-03 19:41:25,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f10b629/c3a7ecc835aa43e0a01bc92054e663be/FLAGa9fb84eaf [2023-08-03 19:41:25,806 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f10b629/c3a7ecc835aa43e0a01bc92054e663be [2023-08-03 19:41:25,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:41:25,814 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:41:25,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:41:25,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:41:25,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:41:25,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:41:25" (1/1) ... [2023-08-03 19:41:25,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfd4ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:25, skipping insertion in model container [2023-08-03 19:41:25,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:41:25" (1/1) ... [2023-08-03 19:41:25,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:41:26,036 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-symm.wvr_bound2.c[3467,3480] [2023-08-03 19:41:26,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:41:26,060 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:41:26,095 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-symm.wvr_bound2.c[3467,3480] [2023-08-03 19:41:26,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:41:26,116 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:41:26,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26 WrapperNode [2023-08-03 19:41:26,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:41:26,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:41:26,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:41:26,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:41:26,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,185 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 326 [2023-08-03 19:41:26,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:41:26,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:41:26,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:41:26,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:41:26,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:41:26,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:41:26,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:41:26,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:41:26,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (1/1) ... [2023-08-03 19:41:26,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:41:26,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:26,270 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) [2023-08-03 19:41:26,277 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 [2023-08-03 19:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:41:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:41:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:41:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:41:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:41:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:41:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:41:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:41:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:41:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:41:26,305 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:41:26,407 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:41:26,408 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:41:26,846 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:41:26,856 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:41:26,856 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-03 19:41:26,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:41:26 BoogieIcfgContainer [2023-08-03 19:41:26,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:41:26,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:41:26,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:41:26,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:41:26,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:41:25" (1/3) ... [2023-08-03 19:41:26,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e44a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:41:26, skipping insertion in model container [2023-08-03 19:41:26,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:26" (2/3) ... [2023-08-03 19:41:26,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e44a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:41:26, skipping insertion in model container [2023-08-03 19:41:26,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:41:26" (3/3) ... [2023-08-03 19:41:26,870 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-node-symm.wvr_bound2.c [2023-08-03 19:41:26,876 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:41:26,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:41:26,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:41:26,882 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:41:26,956 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:41:26,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 373 transitions, 768 flow [2023-08-03 19:41:27,138 INFO L124 PetriNetUnfolderBase]: 57/551 cut-off events. [2023-08-03 19:41:27,138 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 19:41:27,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 551 events. 57/551 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1708 event pairs, 0 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 360. Up to 8 conditions per place. [2023-08-03 19:41:27,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 373 transitions, 768 flow [2023-08-03 19:41:27,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 373 transitions, 768 flow [2023-08-03 19:41:27,166 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:41:27,180 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 373 transitions, 768 flow [2023-08-03 19:41:27,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 373 transitions, 768 flow [2023-08-03 19:41:27,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 373 transitions, 768 flow [2023-08-03 19:41:27,304 INFO L124 PetriNetUnfolderBase]: 57/551 cut-off events. [2023-08-03 19:41:27,305 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 19:41:27,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 551 events. 57/551 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1708 event pairs, 0 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 360. Up to 8 conditions per place. [2023-08-03 19:41:27,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 15168 [2023-08-03 19:41:38,888 INFO L134 LiptonReduction]: Checked pairs total: 24013 [2023-08-03 19:41:38,889 INFO L136 LiptonReduction]: Total number of compositions: 417 [2023-08-03 19:41:38,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:41:38,905 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=true, 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;@45c4905f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:41:38,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:41:38,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:41:38,910 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2023-08-03 19:41:38,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:41:38,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:38,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:38,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:41:38,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1265861346, now seen corresponding path program 1 times [2023-08-03 19:41:38,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:38,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991483207] [2023-08-03 19:41:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:41:39,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:39,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991483207] [2023-08-03 19:41:39,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991483207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:39,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:39,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:39,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407193913] [2023-08-03 19:41:39,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:39,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:41:39,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:39,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:41:39,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:41:39,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 790 [2023-08-03 19:41:39,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:39,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:39,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 790 [2023-08-03 19:41:39,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:39,640 INFO L124 PetriNetUnfolderBase]: 1291/2025 cut-off events. [2023-08-03 19:41:39,640 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-08-03 19:41:39,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4075 conditions, 2025 events. 1291/2025 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9224 event pairs, 441 based on Foata normal form. 0/1484 useless extension candidates. Maximal degree in co-relation 3720. Up to 1957 conditions per place. [2023-08-03 19:41:39,651 INFO L140 encePairwiseOnDemand]: 786/790 looper letters, 53 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-03 19:41:39,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 250 flow [2023-08-03 19:41:39,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:41:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:41:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1071 transitions. [2023-08-03 19:41:39,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518987341772152 [2023-08-03 19:41:39,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1071 transitions. [2023-08-03 19:41:39,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1071 transitions. [2023-08-03 19:41:39,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:39,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1071 transitions. [2023-08-03 19:41:39,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:39,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:39,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:39,696 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 122 flow. Second operand 3 states and 1071 transitions. [2023-08-03 19:41:39,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 250 flow [2023-08-03 19:41:39,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:41:39,703 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 128 flow [2023-08-03 19:41:39,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-08-03 19:41:39,708 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-03 19:41:39,708 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 128 flow [2023-08-03 19:41:39,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:39,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:39,710 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:39,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:41:39,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:41:39,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash 674352049, now seen corresponding path program 1 times [2023-08-03 19:41:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:39,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290693665] [2023-08-03 19:41:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:41:39,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:39,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290693665] [2023-08-03 19:41:39,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290693665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:39,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:39,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:41:39,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286823100] [2023-08-03 19:41:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:39,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:41:39,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:41:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:41:39,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 790 [2023-08-03 19:41:39,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:39,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:39,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 790 [2023-08-03 19:41:39,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:40,093 INFO L124 PetriNetUnfolderBase]: 1291/2017 cut-off events. [2023-08-03 19:41:40,094 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 19:41:40,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 2017 events. 1291/2017 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8923 event pairs, 966 based on Foata normal form. 0/1485 useless extension candidates. Maximal degree in co-relation 4003. Up to 1969 conditions per place. [2023-08-03 19:41:40,105 INFO L140 encePairwiseOnDemand]: 787/790 looper letters, 44 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-03 19:41:40,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 222 flow [2023-08-03 19:41:40,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:41:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:41:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2023-08-03 19:41:40,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375527426160338 [2023-08-03 19:41:40,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2023-08-03 19:41:40,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2023-08-03 19:41:40,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:40,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2023-08-03 19:41:40,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,118 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 128 flow. Second operand 3 states and 1037 transitions. [2023-08-03 19:41:40,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 222 flow [2023-08-03 19:41:40,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 19:41:40,121 INFO L231 Difference]: Finished difference. Result has 46 places, 50 transitions, 136 flow [2023-08-03 19:41:40,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2023-08-03 19:41:40,121 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-08-03 19:41:40,122 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 136 flow [2023-08-03 19:41:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:40,123 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:41:40,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:41:40,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1395417726, now seen corresponding path program 1 times [2023-08-03 19:41:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349441937] [2023-08-03 19:41:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:41:40,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:40,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349441937] [2023-08-03 19:41:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349441937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:40,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198436233] [2023-08-03 19:41:40,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:40,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:40,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:41:40,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 790 [2023-08-03 19:41:40,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 334.25) internal successors, (1337), 4 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:40,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 790 [2023-08-03 19:41:40,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:40,501 INFO L124 PetriNetUnfolderBase]: 1291/2018 cut-off events. [2023-08-03 19:41:40,502 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:41:40,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4085 conditions, 2018 events. 1291/2018 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8923 event pairs, 966 based on Foata normal form. 0/1486 useless extension candidates. Maximal degree in co-relation 4071. Up to 1968 conditions per place. [2023-08-03 19:41:40,512 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 43 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-03 19:41:40,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 232 flow [2023-08-03 19:41:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1376 transitions. [2023-08-03 19:41:40,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43544303797468353 [2023-08-03 19:41:40,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1376 transitions. [2023-08-03 19:41:40,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1376 transitions. [2023-08-03 19:41:40,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:40,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1376 transitions. [2023-08-03 19:41:40,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,526 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 136 flow. Second operand 4 states and 1376 transitions. [2023-08-03 19:41:40,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 232 flow [2023-08-03 19:41:40,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 228 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:40,529 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 150 flow [2023-08-03 19:41:40,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2023-08-03 19:41:40,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-03 19:41:40,530 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 150 flow [2023-08-03 19:41:40,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.25) internal successors, (1337), 4 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:40,531 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:40,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:41:40,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:41:40,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:40,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1849759962, now seen corresponding path program 1 times [2023-08-03 19:41:40,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:40,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078251205] [2023-08-03 19:41:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:40,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:41:40,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:40,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078251205] [2023-08-03 19:41:40,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078251205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:40,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:40,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143401021] [2023-08-03 19:41:40,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:40,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:40,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:40,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:40,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:41:40,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 790 [2023-08-03 19:41:40,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 334.5) internal successors, (1338), 4 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:40,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 790 [2023-08-03 19:41:40,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:40,907 INFO L124 PetriNetUnfolderBase]: 1291/2019 cut-off events. [2023-08-03 19:41:40,907 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:41:40,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 2019 events. 1291/2019 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8931 event pairs, 966 based on Foata normal form. 0/1488 useless extension candidates. Maximal degree in co-relation 4071. Up to 1970 conditions per place. [2023-08-03 19:41:40,918 INFO L140 encePairwiseOnDemand]: 786/790 looper letters, 45 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-03 19:41:40,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 248 flow [2023-08-03 19:41:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1375 transitions. [2023-08-03 19:41:40,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435126582278481 [2023-08-03 19:41:40,922 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1375 transitions. [2023-08-03 19:41:40,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1375 transitions. [2023-08-03 19:41:40,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:40,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1375 transitions. [2023-08-03 19:41:40,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 343.75) internal successors, (1375), 4 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,933 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 150 flow. Second operand 4 states and 1375 transitions. [2023-08-03 19:41:40,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 248 flow [2023-08-03 19:41:40,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:40,935 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 163 flow [2023-08-03 19:41:40,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2023-08-03 19:41:40,936 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-08-03 19:41:40,936 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 163 flow [2023-08-03 19:41:40,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.5) internal successors, (1338), 4 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:40,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:40,938 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:40,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 19:41:40,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:41:40,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1729053702, now seen corresponding path program 1 times [2023-08-03 19:41:40,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:40,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317609556] [2023-08-03 19:41:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:40,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 19:41:41,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:41,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317609556] [2023-08-03 19:41:41,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317609556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:41,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:41,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201407562] [2023-08-03 19:41:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:41,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:41,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:41:41,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 790 [2023-08-03 19:41:41,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 334.75) internal successors, (1339), 4 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:41,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:41,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 790 [2023-08-03 19:41:41,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:41,296 INFO L124 PetriNetUnfolderBase]: 1291/2020 cut-off events. [2023-08-03 19:41:41,296 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-03 19:41:41,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 2020 events. 1291/2020 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8925 event pairs, 966 based on Foata normal form. 1/1491 useless extension candidates. Maximal degree in co-relation 4078. Up to 1971 conditions per place. [2023-08-03 19:41:41,308 INFO L140 encePairwiseOnDemand]: 786/790 looper letters, 46 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-03 19:41:41,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 263 flow [2023-08-03 19:41:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:41,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1375 transitions. [2023-08-03 19:41:41,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435126582278481 [2023-08-03 19:41:41,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1375 transitions. [2023-08-03 19:41:41,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1375 transitions. [2023-08-03 19:41:41,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:41,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1375 transitions. [2023-08-03 19:41:41,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 343.75) internal successors, (1375), 4 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:41,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:41,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:41,323 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 163 flow. Second operand 4 states and 1375 transitions. [2023-08-03 19:41:41,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 263 flow [2023-08-03 19:41:41,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 257 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:41:41,325 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 171 flow [2023-08-03 19:41:41,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-08-03 19:41:41,326 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-08-03 19:41:41,326 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 171 flow [2023-08-03 19:41:41,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.75) internal successors, (1339), 4 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:41,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:41,328 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:41,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 19:41:41,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:41:41,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:41,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1397886434, now seen corresponding path program 1 times [2023-08-03 19:41:41,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:41,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368066828] [2023-08-03 19:41:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:41,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:41:41,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:41:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:41:41,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:41:41,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:41:41,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:41:41,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:41:41,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:41:41,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 19:41:41,414 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 19:41:41,415 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:41:41,416 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:41:41,490 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:41:41,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 475 transitions, 998 flow [2023-08-03 19:41:41,719 INFO L124 PetriNetUnfolderBase]: 168/1316 cut-off events. [2023-08-03 19:41:41,720 INFO L125 PetriNetUnfolderBase]: For 72/103 co-relation queries the response was YES. [2023-08-03 19:41:41,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1316 events. 168/1316 cut-off events. For 72/103 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7133 event pairs, 1 based on Foata normal form. 0/1141 useless extension candidates. Maximal degree in co-relation 860. Up to 32 conditions per place. [2023-08-03 19:41:41,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 475 transitions, 998 flow [2023-08-03 19:41:41,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 475 transitions, 998 flow [2023-08-03 19:41:41,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:41:41,753 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 475 transitions, 998 flow [2023-08-03 19:41:41,753 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 475 transitions, 998 flow [2023-08-03 19:41:41,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 475 transitions, 998 flow [2023-08-03 19:41:41,962 INFO L124 PetriNetUnfolderBase]: 168/1316 cut-off events. [2023-08-03 19:41:41,962 INFO L125 PetriNetUnfolderBase]: For 72/103 co-relation queries the response was YES. [2023-08-03 19:41:41,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1316 events. 168/1316 cut-off events. For 72/103 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7133 event pairs, 1 based on Foata normal form. 0/1141 useless extension candidates. Maximal degree in co-relation 860. Up to 32 conditions per place. [2023-08-03 19:41:42,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 50688 [2023-08-03 19:41:52,674 INFO L134 LiptonReduction]: Checked pairs total: 107451 [2023-08-03 19:41:52,674 INFO L136 LiptonReduction]: Total number of compositions: 509 [2023-08-03 19:41:52,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:41:52,677 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=true, 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;@45c4905f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:41:52,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:41:52,680 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:41:52,680 INFO L124 PetriNetUnfolderBase]: 4/20 cut-off events. [2023-08-03 19:41:52,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:41:52,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:52,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:52,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:41:52,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash -632440725, now seen corresponding path program 1 times [2023-08-03 19:41:52,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:52,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814090294] [2023-08-03 19:41:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:41:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814090294] [2023-08-03 19:41:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814090294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:52,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:52,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482030421] [2023-08-03 19:41:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:41:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:52,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:41:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:41:52,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 984 [2023-08-03 19:41:52,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:52,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:52,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 984 [2023-08-03 19:41:52,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:42:20,454 INFO L124 PetriNetUnfolderBase]: 324144/414792 cut-off events. [2023-08-03 19:42:20,454 INFO L125 PetriNetUnfolderBase]: For 18840/18840 co-relation queries the response was YES. [2023-08-03 19:42:21,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831449 conditions, 414792 events. 324144/414792 cut-off events. For 18840/18840 co-relation queries the response was YES. Maximal size of possible extension queue 9399. Compared 2618835 event pairs, 186666 based on Foata normal form. 0/319464 useless extension candidates. Maximal degree in co-relation 117569. Up to 405766 conditions per place. [2023-08-03 19:42:22,931 INFO L140 encePairwiseOnDemand]: 978/984 looper letters, 83 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-03 19:42:22,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 416 flow [2023-08-03 19:42:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:42:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:42:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1379 transitions. [2023-08-03 19:42:22,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671409214092141 [2023-08-03 19:42:22,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1379 transitions. [2023-08-03 19:42:22,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1379 transitions. [2023-08-03 19:42:22,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:42:22,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1379 transitions. [2023-08-03 19:42:22,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 459.6666666666667) internal successors, (1379), 3 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:22,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:22,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:22,943 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 228 flow. Second operand 3 states and 1379 transitions. [2023-08-03 19:42:22,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 416 flow [2023-08-03 19:42:22,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:42:22,961 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 234 flow [2023-08-03 19:42:22,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2023-08-03 19:42:22,962 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-08-03 19:42:22,962 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 234 flow [2023-08-03 19:42:22,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:22,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:42:22,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:42:22,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 19:42:22,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:42:22,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:42:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2106886468, now seen corresponding path program 1 times [2023-08-03 19:42:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:42:22,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961930001] [2023-08-03 19:42:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:42:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:42:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:42:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:42:23,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:42:23,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961930001] [2023-08-03 19:42:23,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961930001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:42:23,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121186859] [2023-08-03 19:42:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:42:23,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:42:23,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:42:23,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:42:23,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:42:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:42:23,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:42:23,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:42:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:42:23,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:42:23,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121186859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:42:23,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:42:23,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:42:23,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891875229] [2023-08-03 19:42:23,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:42:23,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:42:23,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:42:23,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:42:23,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:42:23,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 984 [2023-08-03 19:42:23,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:23,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:42:23,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 984 [2023-08-03 19:42:23,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:42:49,901 INFO L124 PetriNetUnfolderBase]: 324054/420522 cut-off events. [2023-08-03 19:42:49,901 INFO L125 PetriNetUnfolderBase]: For 19257/19257 co-relation queries the response was YES. [2023-08-03 19:42:50,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838025 conditions, 420522 events. 324054/420522 cut-off events. For 19257/19257 co-relation queries the response was YES. Maximal size of possible extension queue 9470. Compared 2757855 event pairs, 186116 based on Foata normal form. 0/327025 useless extension candidates. Maximal degree in co-relation 837934. Up to 402429 conditions per place. [2023-08-03 19:42:52,349 INFO L140 encePairwiseOnDemand]: 981/984 looper letters, 104 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-03 19:42:52,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 510 flow [2023-08-03 19:42:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:42:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:42:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1396 transitions. [2023-08-03 19:42:52,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47289972899729 [2023-08-03 19:42:52,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1396 transitions. [2023-08-03 19:42:52,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1396 transitions. [2023-08-03 19:42:52,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:42:52,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1396 transitions. [2023-08-03 19:42:52,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 465.3333333333333) internal successors, (1396), 3 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:52,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:52,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:52,364 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 234 flow. Second operand 3 states and 1396 transitions. [2023-08-03 19:42:52,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 510 flow [2023-08-03 19:42:52,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:42:52,403 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 244 flow [2023-08-03 19:42:52,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2023-08-03 19:42:52,404 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2023-08-03 19:42:52,404 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 244 flow [2023-08-03 19:42:52,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:52,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:42:52,405 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:42:52,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:42:52,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:42:52,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:42:52,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:42:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash 450313315, now seen corresponding path program 1 times [2023-08-03 19:42:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:42:52,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478286958] [2023-08-03 19:42:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:42:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:42:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:42:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:42:52,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:42:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478286958] [2023-08-03 19:42:52,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478286958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:42:52,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:42:52,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:42:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363592501] [2023-08-03 19:42:52,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:42:52,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:42:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:42:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:42:52,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:42:52,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 984 [2023-08-03 19:42:52,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:42:52,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:42:52,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 984 [2023-08-03 19:42:52,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:43:22,961 INFO L124 PetriNetUnfolderBase]: 324054/416445 cut-off events. [2023-08-03 19:43:22,962 INFO L125 PetriNetUnfolderBase]: For 35574/35574 co-relation queries the response was YES. [2023-08-03 19:43:24,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850393 conditions, 416445 events. 324054/416445 cut-off events. For 35574/35574 co-relation queries the response was YES. Maximal size of possible extension queue 9324. Compared 2658988 event pairs, 253004 based on Foata normal form. 0/329887 useless extension candidates. Maximal degree in co-relation 625102. Up to 405689 conditions per place. [2023-08-03 19:43:25,465 INFO L140 encePairwiseOnDemand]: 981/984 looper letters, 74 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-03 19:43:25,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 398 flow [2023-08-03 19:43:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:43:25,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:43:25,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1353 transitions. [2023-08-03 19:43:25,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-03 19:43:25,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1353 transitions. [2023-08-03 19:43:25,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1353 transitions. [2023-08-03 19:43:25,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:43:25,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1353 transitions. [2023-08-03 19:43:25,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.0) internal successors, (1353), 3 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:25,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:25,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:25,476 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 244 flow. Second operand 3 states and 1353 transitions. [2023-08-03 19:43:25,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 398 flow [2023-08-03 19:43:25,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:43:25,508 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 254 flow [2023-08-03 19:43:25,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2023-08-03 19:43:25,508 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2023-08-03 19:43:25,508 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 254 flow [2023-08-03 19:43:25,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:25,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:43:25,509 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:43:25,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 19:43:25,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:43:25,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:43:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash -465191578, now seen corresponding path program 1 times [2023-08-03 19:43:25,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:43:25,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833479930] [2023-08-03 19:43:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:43:25,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:43:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:43:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:43:25,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:43:25,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833479930] [2023-08-03 19:43:25,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833479930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:43:25,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:43:25,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:43:25,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568956900] [2023-08-03 19:43:25,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:43:25,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:43:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:43:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:43:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:43:25,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 984 [2023-08-03 19:43:25,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 426.5) internal successors, (1706), 4 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:25,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:43:25,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 984 [2023-08-03 19:43:25,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:43:52,822 INFO L124 PetriNetUnfolderBase]: 324054/416446 cut-off events. [2023-08-03 19:43:52,822 INFO L125 PetriNetUnfolderBase]: For 35312/35312 co-relation queries the response was YES. [2023-08-03 19:43:53,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849591 conditions, 416446 events. 324054/416446 cut-off events. For 35312/35312 co-relation queries the response was YES. Maximal size of possible extension queue 9324. Compared 2659205 event pairs, 253004 based on Foata normal form. 0/329888 useless extension candidates. Maximal degree in co-relation 849574. Up to 405688 conditions per place. [2023-08-03 19:43:55,358 INFO L140 encePairwiseOnDemand]: 979/984 looper letters, 73 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-03 19:43:55,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 410 flow [2023-08-03 19:43:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:43:55,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:43:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1772 transitions. [2023-08-03 19:43:55,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502032520325203 [2023-08-03 19:43:55,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1772 transitions. [2023-08-03 19:43:55,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1772 transitions. [2023-08-03 19:43:55,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:43:55,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1772 transitions. [2023-08-03 19:43:55,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:55,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 984.0) internal successors, (4920), 5 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:55,375 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 984.0) internal successors, (4920), 5 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:55,375 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 254 flow. Second operand 4 states and 1772 transitions. [2023-08-03 19:43:55,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 410 flow [2023-08-03 19:43:55,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 91 transitions, 406 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:43:55,413 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 268 flow [2023-08-03 19:43:55,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2023-08-03 19:43:55,414 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 9 predicate places. [2023-08-03 19:43:55,414 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 268 flow [2023-08-03 19:43:55,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.5) internal successors, (1706), 4 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:55,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:43:55,415 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:43:55,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 19:43:55,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:43:55,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:43:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1451115375, now seen corresponding path program 1 times [2023-08-03 19:43:55,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:43:55,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199413682] [2023-08-03 19:43:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:43:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:43:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:43:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:43:55,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:43:55,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199413682] [2023-08-03 19:43:55,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199413682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:43:55,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:43:55,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:43:55,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500584851] [2023-08-03 19:43:55,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:43:55,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:43:55,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:43:55,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:43:55,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:43:55,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 984 [2023-08-03 19:43:55,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:55,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:43:55,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 984 [2023-08-03 19:43:55,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:44:25,407 INFO L124 PetriNetUnfolderBase]: 324054/416447 cut-off events. [2023-08-03 19:44:25,408 INFO L125 PetriNetUnfolderBase]: For 35312/35312 co-relation queries the response was YES. [2023-08-03 19:44:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849600 conditions, 416447 events. 324054/416447 cut-off events. For 35312/35312 co-relation queries the response was YES. Maximal size of possible extension queue 9323. Compared 2658470 event pairs, 253004 based on Foata normal form. 0/329890 useless extension candidates. Maximal degree in co-relation 849574. Up to 405690 conditions per place. [2023-08-03 19:44:27,877 INFO L140 encePairwiseOnDemand]: 980/984 looper letters, 75 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-08-03 19:44:27,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 426 flow [2023-08-03 19:44:27,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:44:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:44:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1771 transitions. [2023-08-03 19:44:27,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499491869918699 [2023-08-03 19:44:27,882 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1771 transitions. [2023-08-03 19:44:27,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1771 transitions. [2023-08-03 19:44:27,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:44:27,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1771 transitions. [2023-08-03 19:44:27,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 442.75) internal successors, (1771), 4 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:27,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 984.0) internal successors, (4920), 5 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:27,891 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 984.0) internal successors, (4920), 5 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:27,891 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 268 flow. Second operand 4 states and 1771 transitions. [2023-08-03 19:44:27,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 426 flow [2023-08-03 19:44:28,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:44:28,125 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 281 flow [2023-08-03 19:44:28,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2023-08-03 19:44:28,127 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2023-08-03 19:44:28,127 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 281 flow [2023-08-03 19:44:28,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:28,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:44:28,128 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:44:28,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 19:44:28,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:44:28,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:44:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash 920701121, now seen corresponding path program 1 times [2023-08-03 19:44:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:44:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882469275] [2023-08-03 19:44:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:44:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:44:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:44:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 19:44:28,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:44:28,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882469275] [2023-08-03 19:44:28,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882469275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:44:28,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:44:28,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:44:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386708023] [2023-08-03 19:44:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:44:28,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:44:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:44:28,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:44:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:44:28,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 984 [2023-08-03 19:44:28,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:28,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:44:28,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 984 [2023-08-03 19:44:28,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:44:56,420 INFO L124 PetriNetUnfolderBase]: 324054/416448 cut-off events. [2023-08-03 19:44:56,421 INFO L125 PetriNetUnfolderBase]: For 35313/35313 co-relation queries the response was YES. [2023-08-03 19:44:57,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849609 conditions, 416448 events. 324054/416448 cut-off events. For 35313/35313 co-relation queries the response was YES. Maximal size of possible extension queue 9329. Compared 2659275 event pairs, 253004 based on Foata normal form. 1/329893 useless extension candidates. Maximal degree in co-relation 849581. Up to 405691 conditions per place. [2023-08-03 19:44:58,962 INFO L140 encePairwiseOnDemand]: 980/984 looper letters, 76 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-03 19:44:58,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 441 flow [2023-08-03 19:44:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:44:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:44:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1771 transitions. [2023-08-03 19:44:58,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499491869918699 [2023-08-03 19:44:58,967 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1771 transitions. [2023-08-03 19:44:58,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1771 transitions. [2023-08-03 19:44:58,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:44:58,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1771 transitions. [2023-08-03 19:44:58,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 442.75) internal successors, (1771), 4 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:59,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 984.0) internal successors, (4920), 5 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:59,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 984.0) internal successors, (4920), 5 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:59,147 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 281 flow. Second operand 4 states and 1771 transitions. [2023-08-03 19:44:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 441 flow [2023-08-03 19:44:59,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 435 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:44:59,208 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 289 flow [2023-08-03 19:44:59,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2023-08-03 19:44:59,208 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2023-08-03 19:44:59,209 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 289 flow [2023-08-03 19:44:59,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:59,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:44:59,209 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:44:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 19:44:59,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:44:59,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:44:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash 79847776, now seen corresponding path program 1 times [2023-08-03 19:44:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:44:59,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291869323] [2023-08-03 19:44:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:44:59,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:44:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:44:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:44:59,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:44:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291869323] [2023-08-03 19:44:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291869323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:44:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26867899] [2023-08-03 19:44:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:44:59,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:44:59,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:44:59,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:44:59,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:44:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:44:59,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:44:59,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:44:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:44:59,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:44:59,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26867899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:44:59,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:44:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:44:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990999669] [2023-08-03 19:44:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:44:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:44:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:44:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:44:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:44:59,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 984 [2023-08-03 19:44:59,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 432.2) internal successors, (2161), 5 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:59,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:44:59,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 984 [2023-08-03 19:44:59,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:28,822 INFO L124 PetriNetUnfolderBase]: 323874/416839 cut-off events. [2023-08-03 19:45:28,822 INFO L125 PetriNetUnfolderBase]: For 34314/34314 co-relation queries the response was YES. [2023-08-03 19:45:30,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849953 conditions, 416839 events. 323874/416839 cut-off events. For 34314/34314 co-relation queries the response was YES. Maximal size of possible extension queue 9335. Compared 2674025 event pairs, 122612 based on Foata normal form. 81/330470 useless extension candidates. Maximal degree in co-relation 849924. Up to 405179 conditions per place. [2023-08-03 19:45:31,499 INFO L140 encePairwiseOnDemand]: 980/984 looper letters, 107 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2023-08-03 19:45:31,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 124 transitions, 573 flow [2023-08-03 19:45:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:45:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:45:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2252 transitions. [2023-08-03 19:45:31,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45772357723577234 [2023-08-03 19:45:31,503 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2252 transitions. [2023-08-03 19:45:31,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2252 transitions. [2023-08-03 19:45:31,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:31,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2252 transitions. [2023-08-03 19:45:31,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 450.4) internal successors, (2252), 5 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 984.0) internal successors, (5904), 6 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 984.0) internal successors, (5904), 6 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,514 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 289 flow. Second operand 5 states and 2252 transitions. [2023-08-03 19:45:31,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 124 transitions, 573 flow [2023-08-03 19:45:31,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 124 transitions, 561 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-03 19:45:31,530 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 294 flow [2023-08-03 19:45:31,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2023-08-03 19:45:31,532 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2023-08-03 19:45:31,532 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 294 flow [2023-08-03 19:45:31,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 432.2) internal successors, (2161), 5 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:31,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:31,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:45:31,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:45:31,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:31,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:31,741 INFO L85 PathProgramCache]: Analyzing trace with hash -536469384, now seen corresponding path program 1 times [2023-08-03 19:45:31,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:31,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508524222] [2023-08-03 19:45:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 19:45:31,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:31,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508524222] [2023-08-03 19:45:31,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508524222] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:45:31,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183271596] [2023-08-03 19:45:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:31,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:31,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:45:31,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:45:31,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:45:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:31,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:45:31,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:45:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:45:31,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:45:31,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183271596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:45:31,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:45:31,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:45:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119209383] [2023-08-03 19:45:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:45:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:45:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:45:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:45:31,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 984 [2023-08-03 19:45:31,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 436.3333333333333) internal successors, (1309), 3 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:31,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 984 [2023-08-03 19:45:31,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:51,893 INFO L124 PetriNetUnfolderBase]: 233723/302301 cut-off events. [2023-08-03 19:45:51,893 INFO L125 PetriNetUnfolderBase]: For 23801/23801 co-relation queries the response was YES. [2023-08-03 19:45:52,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622456 conditions, 302301 events. 233723/302301 cut-off events. For 23801/23801 co-relation queries the response was YES. Maximal size of possible extension queue 6331. Compared 1929212 event pairs, 120568 based on Foata normal form. 0/247017 useless extension candidates. Maximal degree in co-relation 622427. Up to 197523 conditions per place. [2023-08-03 19:45:53,932 INFO L140 encePairwiseOnDemand]: 981/984 looper letters, 124 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2023-08-03 19:45:53,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 139 transitions, 648 flow [2023-08-03 19:45:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:45:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:45:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1410 transitions. [2023-08-03 19:45:53,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47764227642276424 [2023-08-03 19:45:53,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1410 transitions. [2023-08-03 19:45:53,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1410 transitions. [2023-08-03 19:45:53,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:53,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1410 transitions. [2023-08-03 19:45:53,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 470.0) internal successors, (1410), 3 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:53,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:53,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:53,941 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 294 flow. Second operand 3 states and 1410 transitions. [2023-08-03 19:45:53,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 139 transitions, 648 flow [2023-08-03 19:45:53,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 139 transitions, 641 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:45:53,953 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 299 flow [2023-08-03 19:45:53,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2023-08-03 19:45:53,954 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2023-08-03 19:45:53,954 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 299 flow [2023-08-03 19:45:53,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.3333333333333) internal successors, (1309), 3 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:53,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:53,954 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:53,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:45:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:54,161 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:54,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash 534001349, now seen corresponding path program 1 times [2023-08-03 19:45:54,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:54,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126692399] [2023-08-03 19:45:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:45:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:54,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126692399] [2023-08-03 19:45:54,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126692399] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:45:54,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242040660] [2023-08-03 19:45:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:54,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:54,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:45:54,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:45:54,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:45:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:54,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:45:54,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:45:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:45:54,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:45:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:45:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242040660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:45:54,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:45:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:45:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658836801] [2023-08-03 19:45:54,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:45:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:45:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:45:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:45:54,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 984 [2023-08-03 19:45:54,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 433.2) internal successors, (2166), 5 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:54,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:54,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 984 [2023-08-03 19:45:54,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:46:13,749 INFO L124 PetriNetUnfolderBase]: 220732/286013 cut-off events. [2023-08-03 19:46:13,749 INFO L125 PetriNetUnfolderBase]: For 61803/61803 co-relation queries the response was YES. [2023-08-03 19:46:14,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604402 conditions, 286013 events. 220732/286013 cut-off events. For 61803/61803 co-relation queries the response was YES. Maximal size of possible extension queue 6303. Compared 1791174 event pairs, 82221 based on Foata normal form. 9/236693 useless extension candidates. Maximal degree in co-relation 604372. Up to 278704 conditions per place. [2023-08-03 19:46:15,622 INFO L140 encePairwiseOnDemand]: 981/984 looper letters, 108 selfloop transitions, 3 changer transitions 0/124 dead transitions. [2023-08-03 19:46:15,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 124 transitions, 577 flow [2023-08-03 19:46:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:46:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:46:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1822 transitions. [2023-08-03 19:46:15,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46290650406504064 [2023-08-03 19:46:15,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1822 transitions. [2023-08-03 19:46:15,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1822 transitions. [2023-08-03 19:46:15,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:46:15,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1822 transitions. [2023-08-03 19:46:15,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 455.5) internal successors, (1822), 4 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:15,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 984.0) internal successors, (4920), 5 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:15,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 984.0) internal successors, (4920), 5 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:15,632 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 299 flow. Second operand 4 states and 1822 transitions. [2023-08-03 19:46:15,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 124 transitions, 577 flow [2023-08-03 19:46:17,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 124 transitions, 575 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:46:17,081 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 295 flow [2023-08-03 19:46:17,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2023-08-03 19:46:17,082 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 18 predicate places. [2023-08-03 19:46:17,082 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 295 flow [2023-08-03 19:46:17,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 433.2) internal successors, (2166), 5 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:17,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:17,083 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:46:17,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:46:17,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:46:17,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:46:17,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1301605269, now seen corresponding path program 1 times [2023-08-03 19:46:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065942120] [2023-08-03 19:46:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:46:17,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:17,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065942120] [2023-08-03 19:46:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065942120] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:46:17,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970792698] [2023-08-03 19:46:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:17,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:17,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:46:17,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:46:17,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:46:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:17,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:46:17,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:46:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:46:17,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:46:17,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970792698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:46:17,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:46:17,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:46:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656667725] [2023-08-03 19:46:17,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:46:17,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:46:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:46:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:46:17,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 984 [2023-08-03 19:46:17,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 433.2) internal successors, (2166), 5 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:17,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:17,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 984 [2023-08-03 19:46:17,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:46:34,460 INFO L124 PetriNetUnfolderBase]: 191572/249876 cut-off events. [2023-08-03 19:46:34,461 INFO L125 PetriNetUnfolderBase]: For 16707/16707 co-relation queries the response was YES. [2023-08-03 19:46:35,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528990 conditions, 249876 events. 191572/249876 cut-off events. For 16707/16707 co-relation queries the response was YES. Maximal size of possible extension queue 5266. Compared 1584932 event pairs, 765 based on Foata normal form. 6561/213746 useless extension candidates. Maximal degree in co-relation 528960. Up to 203469 conditions per place. [2023-08-03 19:46:36,223 INFO L140 encePairwiseOnDemand]: 980/984 looper letters, 168 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2023-08-03 19:46:36,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 184 transitions, 821 flow [2023-08-03 19:46:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:46:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:46:36,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2312 transitions. [2023-08-03 19:46:36,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46991869918699186 [2023-08-03 19:46:36,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2312 transitions. [2023-08-03 19:46:36,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2312 transitions. [2023-08-03 19:46:36,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:46:36,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2312 transitions. [2023-08-03 19:46:36,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 462.4) internal successors, (2312), 5 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:36,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 984.0) internal successors, (5904), 6 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:36,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 984.0) internal successors, (5904), 6 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:36,234 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 295 flow. Second operand 5 states and 2312 transitions. [2023-08-03 19:46:36,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 184 transitions, 821 flow [2023-08-03 19:46:52,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 184 transitions, 809 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:46:52,837 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 300 flow [2023-08-03 19:46:52,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2023-08-03 19:46:52,838 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 18 predicate places. [2023-08-03 19:46:52,838 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 300 flow [2023-08-03 19:46:52,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 433.2) internal successors, (2166), 5 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:52,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:52,839 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:46:52,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:46:53,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 19:46:53,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:46:53,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -497776658, now seen corresponding path program 1 times [2023-08-03 19:46:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981076508] [2023-08-03 19:46:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:46:53,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981076508] [2023-08-03 19:46:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981076508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:46:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:46:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:46:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994964119] [2023-08-03 19:46:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:46:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:46:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:46:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:46:53,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 984 [2023-08-03 19:46:53,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 436.3333333333333) internal successors, (1309), 3 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:53,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:53,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 984 [2023-08-03 19:46:53,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand