/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_loop-tiling-eq.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:53:17,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:53:17,848 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:53:17,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:53:17,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:53:17,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:53:17,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:53:17,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:53:17,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:53:17,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:53:17,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:53:17,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:53:17,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:53:17,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:53:17,895 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:53:17,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:53:17,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:53:17,896 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:53:17,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:53:17,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:53:17,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:53:17,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:53:17,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:53:17,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:53:17,897 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:53:17,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:53:17,898 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:53:17,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:53:17,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:53:17,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:53:17,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:53:17,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:53:17,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:53:17,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:53:17,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:53:17,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:53:17,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:53:17,900 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:53:17,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:53:17,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:53:17,901 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:53:17,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:53:18,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:53:18,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:53:18,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:53:18,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:53:18,144 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:53:18,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_loop-tiling-eq.wvr_bound2.c [2023-08-03 19:53:19,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:53:19,369 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:53:19,369 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_loop-tiling-eq.wvr_bound2.c [2023-08-03 19:53:19,380 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8902454af/950043297301493f96b7d22c019244ce/FLAG54013997f [2023-08-03 19:53:19,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8902454af/950043297301493f96b7d22c019244ce [2023-08-03 19:53:19,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:53:19,395 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:53:19,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:53:19,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:53:19,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:53:19,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61708a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19, skipping insertion in model container [2023-08-03 19:53:19,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,437 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:53:19,626 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_loop-tiling-eq.wvr_bound2.c[2780,2793] [2023-08-03 19:53:19,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:53:19,637 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:53:19,658 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_loop-tiling-eq.wvr_bound2.c[2780,2793] [2023-08-03 19:53:19,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:53:19,673 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:53:19,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19 WrapperNode [2023-08-03 19:53:19,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:53:19,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:53:19,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:53:19,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:53:19,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,711 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 225 [2023-08-03 19:53:19,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:53:19,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:53:19,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:53:19,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:53:19,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:53:19,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:53:19,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:53:19,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:53:19,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (1/1) ... [2023-08-03 19:53:19,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:53:19,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:19,788 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 19:53:19,805 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 19:53:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:53:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 19:53:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:53:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:53:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:53:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 19:53:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:53:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:53:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:53:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:53:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:53:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:53:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:53:19,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:53:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:53:19,836 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 19:53:19,954 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:53:19,955 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:53:20,315 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:53:20,323 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:53:20,324 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-03 19:53:20,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:53:20 BoogieIcfgContainer [2023-08-03 19:53:20,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:53:20,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:53:20,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:53:20,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:53:20,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:53:19" (1/3) ... [2023-08-03 19:53:20,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a04063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:53:20, skipping insertion in model container [2023-08-03 19:53:20,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:19" (2/3) ... [2023-08-03 19:53:20,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a04063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:53:20, skipping insertion in model container [2023-08-03 19:53:20,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:53:20" (3/3) ... [2023-08-03 19:53:20,333 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_loop-tiling-eq.wvr_bound2.c [2023-08-03 19:53:20,339 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:53:20,347 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:53:20,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:53:20,348 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:53:20,419 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:53:20,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 287 transitions, 596 flow [2023-08-03 19:53:20,586 INFO L124 PetriNetUnfolderBase]: 58/498 cut-off events. [2023-08-03 19:53:20,586 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:53:20,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 498 events. 58/498 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1585 event pairs, 0 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 321. Up to 8 conditions per place. [2023-08-03 19:53:20,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 287 transitions, 596 flow [2023-08-03 19:53:20,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 287 transitions, 596 flow [2023-08-03 19:53:20,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:53:20,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 287 transitions, 596 flow [2023-08-03 19:53:20,613 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 287 transitions, 596 flow [2023-08-03 19:53:20,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 287 transitions, 596 flow [2023-08-03 19:53:20,697 INFO L124 PetriNetUnfolderBase]: 58/498 cut-off events. [2023-08-03 19:53:20,697 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:53:20,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 498 events. 58/498 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1585 event pairs, 0 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 321. Up to 8 conditions per place. [2023-08-03 19:53:20,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 5328 [2023-08-03 19:53:35,260 INFO L134 LiptonReduction]: Checked pairs total: 8425 [2023-08-03 19:53:35,260 INFO L136 LiptonReduction]: Total number of compositions: 308 [2023-08-03 19:53:35,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:53:35,278 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;@12bdc621, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:53:35,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:53:35,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:53:35,284 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2023-08-03 19:53:35,284 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:53:35,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:35,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:35,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:35,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1898067584, now seen corresponding path program 1 times [2023-08-03 19:53:35,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:35,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978454554] [2023-08-03 19:53:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:35,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:35,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:53:35,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59560252] [2023-08-03 19:53:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:35,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:35,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:35,406 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 19:53:35,407 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 19:53:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:53:35,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:53:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:53:35,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:53:35,562 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:53:35,563 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:53:35,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:53:35,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:53:35,579 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 19:53:35,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-03 19:53:35,775 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:53:35,778 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:53:35,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:53:35,803 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:53:35,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 326 transitions, 700 flow [2023-08-03 19:53:35,997 INFO L124 PetriNetUnfolderBase]: 179/1359 cut-off events. [2023-08-03 19:53:35,998 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:53:36,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 1359 events. 179/1359 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7455 event pairs, 1 based on Foata normal form. 0/1177 useless extension candidates. Maximal degree in co-relation 827. Up to 32 conditions per place. [2023-08-03 19:53:36,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 326 transitions, 700 flow [2023-08-03 19:53:36,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 326 transitions, 700 flow [2023-08-03 19:53:36,014 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:53:36,014 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 326 transitions, 700 flow [2023-08-03 19:53:36,015 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 326 transitions, 700 flow [2023-08-03 19:53:36,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 326 transitions, 700 flow [2023-08-03 19:53:36,175 INFO L124 PetriNetUnfolderBase]: 179/1359 cut-off events. [2023-08-03 19:53:36,176 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:53:36,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 1359 events. 179/1359 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7455 event pairs, 1 based on Foata normal form. 0/1177 useless extension candidates. Maximal degree in co-relation 827. Up to 32 conditions per place. [2023-08-03 19:53:36,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 13476 [2023-08-03 19:53:49,488 INFO L134 LiptonReduction]: Checked pairs total: 25988 [2023-08-03 19:53:49,488 INFO L136 LiptonReduction]: Total number of compositions: 330 [2023-08-03 19:53:49,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:53:49,491 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;@12bdc621, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:53:49,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:53:49,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:53:49,495 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2023-08-03 19:53:49,496 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:53:49,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:49,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:49,496 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 19:53:49,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:49,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2045124157, now seen corresponding path program 1 times [2023-08-03 19:53:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52836267] [2023-08-03 19:53:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:49,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:49,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:53:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679859592] [2023-08-03 19:53:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:49,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:49,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:49,512 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 19:53:49,541 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 19:53:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:49,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:53:49,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:49,629 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 19:53:49,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:53:49,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:49,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52836267] [2023-08-03 19:53:49,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:53:49,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679859592] [2023-08-03 19:53:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679859592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:49,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:53:49,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:53:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552269006] [2023-08-03 19:53:49,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:49,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:53:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:53:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:53:49,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 656 [2023-08-03 19:53:49,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 64 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 19:53:49,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:49,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 656 [2023-08-03 19:53:49,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:53,293 INFO L124 PetriNetUnfolderBase]: 35794/46686 cut-off events. [2023-08-03 19:53:53,294 INFO L125 PetriNetUnfolderBase]: For 3119/3119 co-relation queries the response was YES. [2023-08-03 19:53:53,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92560 conditions, 46686 events. 35794/46686 cut-off events. For 3119/3119 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 252463 event pairs, 16779 based on Foata normal form. 0/29542 useless extension candidates. Maximal degree in co-relation 34494. Up to 43983 conditions per place. [2023-08-03 19:53:53,588 INFO L140 encePairwiseOnDemand]: 652/656 looper letters, 53 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-03 19:53:53,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 68 transitions, 294 flow [2023-08-03 19:53:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:53:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:53:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2023-08-03 19:53:53,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603658536585366 [2023-08-03 19:53:53,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2023-08-03 19:53:53,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2023-08-03 19:53:53,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:53,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2023-08-03 19:53:53,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 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 19:53:53,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 19:53:53,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 19:53:53,637 INFO L175 Difference]: Start difference. First operand has 55 places, 64 transitions, 176 flow. Second operand 3 states and 906 transitions. [2023-08-03 19:53:53,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 68 transitions, 294 flow [2023-08-03 19:53:53,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:53:53,648 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 186 flow [2023-08-03 19:53:53,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2023-08-03 19:53:53,653 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-08-03 19:53:53,654 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 186 flow [2023-08-03 19:53:53,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 19:53:53,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:53,655 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:53,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 19:53:53,859 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,SelfDestructingSolverStorable1 [2023-08-03 19:53:53,860 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 19:53:53,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:53,860 INFO L85 PathProgramCache]: Analyzing trace with hash 620233639, now seen corresponding path program 1 times [2023-08-03 19:53:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:53,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023203707] [2023-08-03 19:53:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:53,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:53:53,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714189487] [2023-08-03 19:53:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:53,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:53,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:53,876 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 19:53:53,904 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 19:53:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:53,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:53:53,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:53:54,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:53:54,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:54,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023203707] [2023-08-03 19:53:54,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:53:54,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714189487] [2023-08-03 19:53:54,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714189487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:54,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:53:54,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 19:53:54,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392543666] [2023-08-03 19:53:54,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:54,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:53:54,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:54,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:53:54,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:53:54,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 656 [2023-08-03 19:53:54,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 284.2) internal successors, (1421), 5 states have internal predecessors, (1421), 0 states have call successors, (0), 0 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 19:53:54,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:54,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 656 [2023-08-03 19:53:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:56,935 INFO L124 PetriNetUnfolderBase]: 35718/46576 cut-off events. [2023-08-03 19:53:56,935 INFO L125 PetriNetUnfolderBase]: For 3092/3092 co-relation queries the response was YES. [2023-08-03 19:53:57,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92385 conditions, 46576 events. 35718/46576 cut-off events. For 3092/3092 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 252056 event pairs, 11572 based on Foata normal form. 16/29468 useless extension candidates. Maximal degree in co-relation 40742. Up to 43821 conditions per place. [2023-08-03 19:53:57,162 INFO L140 encePairwiseOnDemand]: 652/656 looper letters, 58 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-03 19:53:57,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 328 flow [2023-08-03 19:53:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:53:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:53:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1473 transitions. [2023-08-03 19:53:57,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44908536585365855 [2023-08-03 19:53:57,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1473 transitions. [2023-08-03 19:53:57,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1473 transitions. [2023-08-03 19:53:57,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:57,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1473 transitions. [2023-08-03 19:53:57,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 294.6) internal successors, (1473), 5 states have internal predecessors, (1473), 0 states have call successors, (0), 0 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 19:53:57,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:53:57,180 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:53:57,180 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 186 flow. Second operand 5 states and 1473 transitions. [2023-08-03 19:53:57,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 328 flow [2023-08-03 19:53:57,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 320 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:53:57,186 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 193 flow [2023-08-03 19:53:57,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2023-08-03 19:53:57,187 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2023-08-03 19:53:57,187 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 193 flow [2023-08-03 19:53:57,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.2) internal successors, (1421), 5 states have internal predecessors, (1421), 0 states have call successors, (0), 0 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 19:53:57,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:57,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:57,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:53:57,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:57,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:57,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1869624649, now seen corresponding path program 1 times [2023-08-03 19:53:57,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569984539] [2023-08-03 19:53:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:57,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:57,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:53:57,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379102803] [2023-08-03 19:53:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:57,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:57,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:57,407 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 19:53:57,409 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 19:53:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:57,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:53:57,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:57,493 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 19:53:57,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:53:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569984539] [2023-08-03 19:53:57,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:53:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379102803] [2023-08-03 19:53:57,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379102803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:57,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:53:57,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:53:57,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671206992] [2023-08-03 19:53:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:57,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:53:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:53:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:53:57,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 656 [2023-08-03 19:53:57,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 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 19:53:57,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:57,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 656 [2023-08-03 19:53:57,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:00,096 INFO L124 PetriNetUnfolderBase]: 35804/46849 cut-off events. [2023-08-03 19:54:00,097 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2023-08-03 19:54:00,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92410 conditions, 46849 events. 35804/46849 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 1615. Compared 258372 event pairs, 15911 based on Foata normal form. 0/29639 useless extension candidates. Maximal degree in co-relation 25109. Up to 43560 conditions per place. [2023-08-03 19:54:00,324 INFO L140 encePairwiseOnDemand]: 653/656 looper letters, 62 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-03 19:54:00,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 349 flow [2023-08-03 19:54:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:54:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:54:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2023-08-03 19:54:00,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639227642276423 [2023-08-03 19:54:00,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 913 transitions. [2023-08-03 19:54:00,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 913 transitions. [2023-08-03 19:54:00,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:00,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 913 transitions. [2023-08-03 19:54:00,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 19:54:00,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 19:54:00,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 19:54:00,342 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 193 flow. Second operand 3 states and 913 transitions. [2023-08-03 19:54:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 349 flow [2023-08-03 19:54:00,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 342 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:54:00,347 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 201 flow [2023-08-03 19:54:00,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2023-08-03 19:54:00,349 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2023-08-03 19:54:00,349 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 201 flow [2023-08-03 19:54:00,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 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 19:54:00,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:00,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:00,358 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 19:54:00,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:00,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:00,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash -46042761, now seen corresponding path program 1 times [2023-08-03 19:54:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766812333] [2023-08-03 19:54:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:00,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:00,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:00,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557254961] [2023-08-03 19:54:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:00,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:00,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:00,571 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 19:54:00,574 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 19:54:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:00,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:54:00,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:00,677 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 19:54:00,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:54:00,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:00,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766812333] [2023-08-03 19:54:00,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:00,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557254961] [2023-08-03 19:54:00,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557254961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:54:00,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:54:00,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:54:00,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566767832] [2023-08-03 19:54:00,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:54:00,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:54:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:54:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:54:00,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 656 [2023-08-03 19:54:00,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 0 states have call successors, (0), 0 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 19:54:00,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:00,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 656 [2023-08-03 19:54:00,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:02,869 INFO L124 PetriNetUnfolderBase]: 27177/35922 cut-off events. [2023-08-03 19:54:02,869 INFO L125 PetriNetUnfolderBase]: For 2366/2366 co-relation queries the response was YES. [2023-08-03 19:54:02,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72452 conditions, 35922 events. 27177/35922 cut-off events. For 2366/2366 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 196007 event pairs, 10967 based on Foata normal form. 0/23669 useless extension candidates. Maximal degree in co-relation 21579. Up to 24712 conditions per place. [2023-08-03 19:54:03,048 INFO L140 encePairwiseOnDemand]: 653/656 looper letters, 73 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-03 19:54:03,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 405 flow [2023-08-03 19:54:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:54:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:54:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 922 transitions. [2023-08-03 19:54:03,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684959349593496 [2023-08-03 19:54:03,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 922 transitions. [2023-08-03 19:54:03,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 922 transitions. [2023-08-03 19:54:03,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:03,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 922 transitions. [2023-08-03 19:54:03,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 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 19:54:03,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 19:54:03,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 19:54:03,059 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 201 flow. Second operand 3 states and 922 transitions. [2023-08-03 19:54:03,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 405 flow [2023-08-03 19:54:03,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:54:03,064 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 210 flow [2023-08-03 19:54:03,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-08-03 19:54:03,066 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-08-03 19:54:03,066 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 210 flow [2023-08-03 19:54:03,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 0 states have call successors, (0), 0 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 19:54:03,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:03,067 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:03,077 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 19:54:03,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:03,278 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 19:54:03,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1795921036, now seen corresponding path program 1 times [2023-08-03 19:54:03,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:03,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750733548] [2023-08-03 19:54:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:03,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:03,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:03,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057876070] [2023-08-03 19:54:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:03,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:03,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:03,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:03,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:54:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:03,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:54:03,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:54:03,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:54:03,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750733548] [2023-08-03 19:54:03,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057876070] [2023-08-03 19:54:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057876070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:03,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:54:03,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-08-03 19:54:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060748235] [2023-08-03 19:54:03,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:03,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:54:03,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:54:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:54:03,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 656 [2023-08-03 19:54:03,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 19:54:03,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:03,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 656 [2023-08-03 19:54:03,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:05,409 INFO L124 PetriNetUnfolderBase]: 24853/32916 cut-off events. [2023-08-03 19:54:05,409 INFO L125 PetriNetUnfolderBase]: For 4981/4981 co-relation queries the response was YES. [2023-08-03 19:54:05,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67938 conditions, 32916 events. 24853/32916 cut-off events. For 4981/4981 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 177185 event pairs, 8133 based on Foata normal form. 4/22020 useless extension candidates. Maximal degree in co-relation 28304. Up to 30874 conditions per place. [2023-08-03 19:54:05,533 INFO L140 encePairwiseOnDemand]: 653/656 looper letters, 60 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-03 19:54:05,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 350 flow [2023-08-03 19:54:05,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:54:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:54:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1190 transitions. [2023-08-03 19:54:05,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4535060975609756 [2023-08-03 19:54:05,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1190 transitions. [2023-08-03 19:54:05,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1190 transitions. [2023-08-03 19:54:05,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:05,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1190 transitions. [2023-08-03 19:54:05,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.5) internal successors, (1190), 4 states have internal predecessors, (1190), 0 states have call successors, (0), 0 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 19:54:05,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:05,545 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:05,546 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 210 flow. Second operand 4 states and 1190 transitions. [2023-08-03 19:54:05,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 350 flow [2023-08-03 19:54:05,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:54:05,562 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 206 flow [2023-08-03 19:54:05,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-03 19:54:05,563 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2023-08-03 19:54:05,563 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 206 flow [2023-08-03 19:54:05,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 19:54:05,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:05,564 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:05,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 19:54:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:05,769 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 19:54:05,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash -12946273, now seen corresponding path program 1 times [2023-08-03 19:54:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:05,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725939188] [2023-08-03 19:54:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:05,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:05,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:05,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819688350] [2023-08-03 19:54:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:05,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:05,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:05,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:54:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:05,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:54:05,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:54:05,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:54:05,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725939188] [2023-08-03 19:54:05,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819688350] [2023-08-03 19:54:05,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819688350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:54:05,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:54:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 19:54:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463206390] [2023-08-03 19:54:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:54:05,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:54:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:54:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:54:05,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 656 [2023-08-03 19:54:05,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 19:54:05,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:05,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 656 [2023-08-03 19:54:05,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:07,789 INFO L124 PetriNetUnfolderBase]: 22833/29927 cut-off events. [2023-08-03 19:54:07,789 INFO L125 PetriNetUnfolderBase]: For 2403/2403 co-relation queries the response was YES. [2023-08-03 19:54:07,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61998 conditions, 29927 events. 22833/29927 cut-off events. For 2403/2403 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 156808 event pairs, 828 based on Foata normal form. 400/20393 useless extension candidates. Maximal degree in co-relation 22814. Up to 25444 conditions per place. [2023-08-03 19:54:07,897 INFO L140 encePairwiseOnDemand]: 652/656 looper letters, 84 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-03 19:54:07,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 450 flow [2023-08-03 19:54:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:54:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:54:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1497 transitions. [2023-08-03 19:54:07,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45640243902439026 [2023-08-03 19:54:07,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1497 transitions. [2023-08-03 19:54:07,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1497 transitions. [2023-08-03 19:54:07,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:07,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1497 transitions. [2023-08-03 19:54:07,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 299.4) internal successors, (1497), 5 states have internal predecessors, (1497), 0 states have call successors, (0), 0 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 19:54:07,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:54:07,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:54:07,908 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 206 flow. Second operand 5 states and 1497 transitions. [2023-08-03 19:54:07,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 450 flow [2023-08-03 19:54:07,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 438 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:54:07,948 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 211 flow [2023-08-03 19:54:07,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-03 19:54:07,948 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2023-08-03 19:54:07,948 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 211 flow [2023-08-03 19:54:07,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 19:54:07,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:07,949 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] [2023-08-03 19:54:07,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:08,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:08,157 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:08,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1284104449, now seen corresponding path program 1 times [2023-08-03 19:54:08,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:08,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444307654] [2023-08-03 19:54:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:08,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:08,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:08,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125591917] [2023-08-03 19:54:08,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:08,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:08,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:08,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:08,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:54:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:08,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:54:08,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:08,281 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 19:54:08,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:54:08,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444307654] [2023-08-03 19:54:08,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125591917] [2023-08-03 19:54:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125591917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:54:08,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:54:08,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:54:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151520302] [2023-08-03 19:54:08,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:54:08,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:54:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:54:08,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:54:08,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 656 [2023-08-03 19:54:08,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 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 19:54:08,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:08,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 656 [2023-08-03 19:54:08,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:09,813 INFO L124 PetriNetUnfolderBase]: 20495/27237 cut-off events. [2023-08-03 19:54:09,813 INFO L125 PetriNetUnfolderBase]: For 6636/6636 co-relation queries the response was YES. [2023-08-03 19:54:09,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57607 conditions, 27237 events. 20495/27237 cut-off events. For 6636/6636 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 143582 event pairs, 9448 based on Foata normal form. 0/18474 useless extension candidates. Maximal degree in co-relation 21235. Up to 20546 conditions per place. [2023-08-03 19:54:09,905 INFO L140 encePairwiseOnDemand]: 653/656 looper letters, 74 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-03 19:54:09,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 415 flow [2023-08-03 19:54:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:54:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:54:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 922 transitions. [2023-08-03 19:54:09,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684959349593496 [2023-08-03 19:54:09,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 922 transitions. [2023-08-03 19:54:09,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 922 transitions. [2023-08-03 19:54:09,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:09,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 922 transitions. [2023-08-03 19:54:09,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 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 19:54:09,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 19:54:09,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 19:54:09,913 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 211 flow. Second operand 3 states and 922 transitions. [2023-08-03 19:54:09,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 415 flow [2023-08-03 19:54:09,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 408 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:54:09,929 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 216 flow [2023-08-03 19:54:09,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-08-03 19:54:09,930 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2023-08-03 19:54:09,930 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 216 flow [2023-08-03 19:54:09,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 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 19:54:09,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:09,931 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] [2023-08-03 19:54:09,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:10,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-03 19:54:10,135 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 19:54:10,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1171173032, now seen corresponding path program 1 times [2023-08-03 19:54:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:10,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278914112] [2023-08-03 19:54:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:10,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:10,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555846141] [2023-08-03 19:54:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:10,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:10,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:10,147 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:10,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:54:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:10,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:54:10,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:54:10,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:54:10,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:10,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278914112] [2023-08-03 19:54:10,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:10,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555846141] [2023-08-03 19:54:10,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555846141] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:10,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:54:10,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-08-03 19:54:10,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590037484] [2023-08-03 19:54:10,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:10,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:54:10,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:54:10,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:54:10,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 656 [2023-08-03 19:54:10,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 19:54:10,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:10,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 656 [2023-08-03 19:54:10,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:11,838 INFO L124 PetriNetUnfolderBase]: 19773/25894 cut-off events. [2023-08-03 19:54:11,838 INFO L125 PetriNetUnfolderBase]: For 4407/4407 co-relation queries the response was YES. [2023-08-03 19:54:11,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55566 conditions, 25894 events. 19773/25894 cut-off events. For 4407/4407 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 132528 event pairs, 5448 based on Foata normal form. 80/17750 useless extension candidates. Maximal degree in co-relation 39134. Up to 21862 conditions per place. [2023-08-03 19:54:11,975 INFO L140 encePairwiseOnDemand]: 653/656 looper letters, 79 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-03 19:54:11,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 430 flow [2023-08-03 19:54:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:54:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:54:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1208 transitions. [2023-08-03 19:54:11,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603658536585366 [2023-08-03 19:54:11,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1208 transitions. [2023-08-03 19:54:11,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1208 transitions. [2023-08-03 19:54:11,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:11,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1208 transitions. [2023-08-03 19:54:11,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 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 19:54:11,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:11,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:11,985 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 216 flow. Second operand 4 states and 1208 transitions. [2023-08-03 19:54:11,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 430 flow [2023-08-03 19:54:12,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:54:12,177 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 212 flow [2023-08-03 19:54:12,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-03 19:54:12,178 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-08-03 19:54:12,178 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 212 flow [2023-08-03 19:54:12,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 19:54:12,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:12,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2023-08-03 19:54:12,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:12,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:12,402 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:12,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1053948491, now seen corresponding path program 1 times [2023-08-03 19:54:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219250299] [2023-08-03 19:54:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:12,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:12,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762961499] [2023-08-03 19:54:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:12,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:12,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:12,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:12,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:54:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:12,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:54:12,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:54:12,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:54:12,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219250299] [2023-08-03 19:54:12,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:12,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762961499] [2023-08-03 19:54:12,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762961499] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:12,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:54:12,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-08-03 19:54:12,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379727937] [2023-08-03 19:54:12,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:12,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:54:12,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:54:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:54:12,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 656 [2023-08-03 19:54:12,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 288.25) internal successors, (1153), 4 states have internal predecessors, (1153), 0 states have call successors, (0), 0 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 19:54:12,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:12,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 656 [2023-08-03 19:54:12,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:13,586 INFO L124 PetriNetUnfolderBase]: 14992/19651 cut-off events. [2023-08-03 19:54:13,586 INFO L125 PetriNetUnfolderBase]: For 5578/5578 co-relation queries the response was YES. [2023-08-03 19:54:13,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42283 conditions, 19651 events. 14992/19651 cut-off events. For 5578/5578 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 94636 event pairs, 3123 based on Foata normal form. 360/13707 useless extension candidates. Maximal degree in co-relation 39419. Up to 7136 conditions per place. [2023-08-03 19:54:13,696 INFO L140 encePairwiseOnDemand]: 652/656 looper letters, 88 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-03 19:54:13,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 103 transitions, 480 flow [2023-08-03 19:54:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:54:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:54:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1218 transitions. [2023-08-03 19:54:13,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641768292682927 [2023-08-03 19:54:13,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1218 transitions. [2023-08-03 19:54:13,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1218 transitions. [2023-08-03 19:54:13,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:13,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1218 transitions. [2023-08-03 19:54:13,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 19:54:13,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:13,706 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:13,707 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 212 flow. Second operand 4 states and 1218 transitions. [2023-08-03 19:54:13,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 103 transitions, 480 flow [2023-08-03 19:54:13,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 103 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:54:13,742 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 226 flow [2023-08-03 19:54:13,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-08-03 19:54:13,743 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2023-08-03 19:54:13,743 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 226 flow [2023-08-03 19:54:13,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.25) internal successors, (1153), 4 states have internal predecessors, (1153), 0 states have call successors, (0), 0 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 19:54:13,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:13,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:54:13,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:13,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:54:13,949 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:13,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:13,949 INFO L85 PathProgramCache]: Analyzing trace with hash 164990766, now seen corresponding path program 1 times [2023-08-03 19:54:13,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:13,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560112527] [2023-08-03 19:54:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:13,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:13,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:13,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381904025] [2023-08-03 19:54:13,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:13,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:13,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:13,962 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:13,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:54:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:14,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:54:14,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:54:14,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:54:14,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:14,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560112527] [2023-08-03 19:54:14,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:14,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381904025] [2023-08-03 19:54:14,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381904025] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:14,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:54:14,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-08-03 19:54:14,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836258760] [2023-08-03 19:54:14,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:14,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:54:14,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:54:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:54:14,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 656 [2023-08-03 19:54:14,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 0 states have call successors, (0), 0 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 19:54:14,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:14,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 656 [2023-08-03 19:54:14,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:15,259 INFO L124 PetriNetUnfolderBase]: 14944/19617 cut-off events. [2023-08-03 19:54:15,259 INFO L125 PetriNetUnfolderBase]: For 8392/8392 co-relation queries the response was YES. [2023-08-03 19:54:15,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44369 conditions, 19617 events. 14944/19617 cut-off events. For 8392/8392 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 95038 event pairs, 8186 based on Foata normal form. 19/13272 useless extension candidates. Maximal degree in co-relation 41566. Up to 17462 conditions per place. [2023-08-03 19:54:15,365 INFO L140 encePairwiseOnDemand]: 652/656 looper letters, 88 selfloop transitions, 3 changer transitions 2/104 dead transitions. [2023-08-03 19:54:15,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 496 flow [2023-08-03 19:54:15,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:54:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:54:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1218 transitions. [2023-08-03 19:54:15,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641768292682927 [2023-08-03 19:54:15,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1218 transitions. [2023-08-03 19:54:15,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1218 transitions. [2023-08-03 19:54:15,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:15,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1218 transitions. [2023-08-03 19:54:15,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 19:54:15,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:15,374 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:15,374 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 226 flow. Second operand 4 states and 1218 transitions. [2023-08-03 19:54:15,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 496 flow [2023-08-03 19:54:15,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 492 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:54:15,423 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 230 flow [2023-08-03 19:54:15,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-03 19:54:15,423 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2023-08-03 19:54:15,423 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 230 flow [2023-08-03 19:54:15,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 0 states have call successors, (0), 0 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 19:54:15,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:15,424 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:54:15,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:15,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 19:54:15,629 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 19:54:15,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash -171746529, now seen corresponding path program 1 times [2023-08-03 19:54:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:15,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627558872] [2023-08-03 19:54:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:15,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:15,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:15,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756091673] [2023-08-03 19:54:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:15,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:15,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:15,642 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:15,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:54:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:15,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-03 19:54:15,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:54:15,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:54:15,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:15,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627558872] [2023-08-03 19:54:15,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756091673] [2023-08-03 19:54:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756091673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:54:15,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:54:15,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:54:15,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494718821] [2023-08-03 19:54:15,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:54:15,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:54:15,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:15,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:54:15,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:54:15,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 656 [2023-08-03 19:54:15,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 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 19:54:15,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:15,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 656 [2023-08-03 19:54:15,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:18,124 INFO L124 PetriNetUnfolderBase]: 28915/37778 cut-off events. [2023-08-03 19:54:18,124 INFO L125 PetriNetUnfolderBase]: For 14522/14522 co-relation queries the response was YES. [2023-08-03 19:54:18,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84763 conditions, 37778 events. 28915/37778 cut-off events. For 14522/14522 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 199506 event pairs, 16672 based on Foata normal form. 1/25517 useless extension candidates. Maximal degree in co-relation 84264. Up to 17903 conditions per place. [2023-08-03 19:54:18,363 INFO L140 encePairwiseOnDemand]: 652/656 looper letters, 55 selfloop transitions, 2 changer transitions 44/112 dead transitions. [2023-08-03 19:54:18,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 622 flow [2023-08-03 19:54:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:54:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:54:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1214 transitions. [2023-08-03 19:54:18,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46265243902439024 [2023-08-03 19:54:18,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1214 transitions. [2023-08-03 19:54:18,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1214 transitions. [2023-08-03 19:54:18,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:18,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1214 transitions. [2023-08-03 19:54:18,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.5) internal successors, (1214), 4 states have internal predecessors, (1214), 0 states have call successors, (0), 0 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 19:54:18,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:18,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 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 19:54:18,370 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 230 flow. Second operand 4 states and 1214 transitions. [2023-08-03 19:54:18,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 622 flow [2023-08-03 19:54:18,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 606 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 19:54:18,610 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 236 flow [2023-08-03 19:54:18,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-03 19:54:18,611 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2023-08-03 19:54:18,611 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 236 flow [2023-08-03 19:54:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 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 19:54:18,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:18,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:54:18,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:18,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:54:18,813 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:18,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:18,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1553802611, now seen corresponding path program 1 times [2023-08-03 19:54:18,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:18,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66317320] [2023-08-03 19:54:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:18,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:18,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:18,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252109797] [2023-08-03 19:54:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:18,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:18,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:19,056 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:19,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:54:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:19,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:54:19,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 19:54:19,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 19:54:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66317320] [2023-08-03 19:54:19,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252109797] [2023-08-03 19:54:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252109797] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:19,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:54:19,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-08-03 19:54:19,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739321468] [2023-08-03 19:54:19,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:19,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 19:54:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 19:54:19,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:54:19,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 656 [2023-08-03 19:54:19,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 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 19:54:19,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:19,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 656 [2023-08-03 19:54:19,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:21,197 INFO L124 PetriNetUnfolderBase]: 22012/29039 cut-off events. [2023-08-03 19:54:21,197 INFO L125 PetriNetUnfolderBase]: For 10701/10701 co-relation queries the response was YES. [2023-08-03 19:54:21,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64584 conditions, 29039 events. 22012/29039 cut-off events. For 10701/10701 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 155745 event pairs, 5316 based on Foata normal form. 0/20429 useless extension candidates. Maximal degree in co-relation 64559. Up to 11184 conditions per place. [2023-08-03 19:54:21,419 INFO L140 encePairwiseOnDemand]: 650/656 looper letters, 111 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2023-08-03 19:54:21,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 696 flow [2023-08-03 19:54:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:54:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:54:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2023-08-03 19:54:21,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484247967479675 [2023-08-03 19:54:21,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1765 transitions. [2023-08-03 19:54:21,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1765 transitions. [2023-08-03 19:54:21,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:21,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1765 transitions. [2023-08-03 19:54:21,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.1666666666667) internal successors, (1765), 6 states have internal predecessors, (1765), 0 states have call successors, (0), 0 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 19:54:21,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 656.0) internal successors, (4592), 7 states have internal predecessors, (4592), 0 states have call successors, (0), 0 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 19:54:21,431 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 656.0) internal successors, (4592), 7 states have internal predecessors, (4592), 0 states have call successors, (0), 0 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 19:54:21,431 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 236 flow. Second operand 6 states and 1765 transitions. [2023-08-03 19:54:21,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 696 flow [2023-08-03 19:54:21,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 127 transitions, 692 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:54:21,475 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 265 flow [2023-08-03 19:54:21,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-08-03 19:54:21,476 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2023-08-03 19:54:21,476 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 265 flow [2023-08-03 19:54:21,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 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 19:54:21,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:21,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:54:21,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:21,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:54:21,683 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:21,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash 598786626, now seen corresponding path program 1 times [2023-08-03 19:54:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:21,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763952001] [2023-08-03 19:54:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:21,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:21,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011616542] [2023-08-03 19:54:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:21,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:21,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:21,700 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:21,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:54:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:21,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:54:21,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:54:21,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:54:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763952001] [2023-08-03 19:54:21,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011616542] [2023-08-03 19:54:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011616542] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:21,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:54:21,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-08-03 19:54:21,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857779542] [2023-08-03 19:54:21,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:21,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 19:54:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 19:54:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:54:21,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 656 [2023-08-03 19:54:21,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 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 19:54:21,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:21,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 656 [2023-08-03 19:54:21,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:24,585 INFO L124 PetriNetUnfolderBase]: 28654/37594 cut-off events. [2023-08-03 19:54:24,585 INFO L125 PetriNetUnfolderBase]: For 21424/23126 co-relation queries the response was YES. [2023-08-03 19:54:24,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90127 conditions, 37594 events. 28654/37594 cut-off events. For 21424/23126 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 200698 event pairs, 7637 based on Foata normal form. 1702/31407 useless extension candidates. Maximal degree in co-relation 90084. Up to 15714 conditions per place. [2023-08-03 19:54:24,771 INFO L140 encePairwiseOnDemand]: 650/656 looper letters, 111 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2023-08-03 19:54:24,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 737 flow [2023-08-03 19:54:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:54:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:54:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1761 transitions. [2023-08-03 19:54:24,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44740853658536583 [2023-08-03 19:54:24,774 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1761 transitions. [2023-08-03 19:54:24,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1761 transitions. [2023-08-03 19:54:24,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:24,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1761 transitions. [2023-08-03 19:54:24,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.5) internal successors, (1761), 6 states have internal predecessors, (1761), 0 states have call successors, (0), 0 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 19:54:24,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 656.0) internal successors, (4592), 7 states have internal predecessors, (4592), 0 states have call successors, (0), 0 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 19:54:24,780 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 656.0) internal successors, (4592), 7 states have internal predecessors, (4592), 0 states have call successors, (0), 0 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 19:54:24,780 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 265 flow. Second operand 6 states and 1761 transitions. [2023-08-03 19:54:24,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 737 flow [2023-08-03 19:54:24,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:54:24,837 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 291 flow [2023-08-03 19:54:24,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2023-08-03 19:54:24,838 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2023-08-03 19:54:24,838 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 291 flow [2023-08-03 19:54:24,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 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 19:54:24,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:24,839 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2023-08-03 19:54:24,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:25,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:25,041 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:25,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1672603162, now seen corresponding path program 1 times [2023-08-03 19:54:25,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:25,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954247894] [2023-08-03 19:54:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:25,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:25,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:25,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768998767] [2023-08-03 19:54:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:25,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:25,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:25,076 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:25,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:54:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:25,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 19:54:25,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:54:25,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:54:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954247894] [2023-08-03 19:54:25,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768998767] [2023-08-03 19:54:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768998767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:54:25,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:54:25,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:54:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201175047] [2023-08-03 19:54:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:54:25,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:54:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:54:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:54:25,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 656 [2023-08-03 19:54:25,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 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 19:54:25,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:25,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 656 [2023-08-03 19:54:25,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:32,900 INFO L124 PetriNetUnfolderBase]: 77106/101418 cut-off events. [2023-08-03 19:54:32,901 INFO L125 PetriNetUnfolderBase]: For 65574/73882 co-relation queries the response was YES. [2023-08-03 19:54:33,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258265 conditions, 101418 events. 77106/101418 cut-off events. For 65574/73882 co-relation queries the response was YES. Maximal size of possible extension queue 3030. Compared 607885 event pairs, 48156 based on Foata normal form. 8310/94250 useless extension candidates. Maximal degree in co-relation 257313. Up to 31882 conditions per place. [2023-08-03 19:54:33,462 INFO L140 encePairwiseOnDemand]: 652/656 looper letters, 58 selfloop transitions, 3 changer transitions 104/176 dead transitions. [2023-08-03 19:54:33,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 176 transitions, 1079 flow [2023-08-03 19:54:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:54:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:54:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1505 transitions. [2023-08-03 19:54:33,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45884146341463417 [2023-08-03 19:54:33,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1505 transitions. [2023-08-03 19:54:33,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1505 transitions. [2023-08-03 19:54:33,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:33,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1505 transitions. [2023-08-03 19:54:33,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 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 19:54:33,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:54:33,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:54:33,469 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 291 flow. Second operand 5 states and 1505 transitions. [2023-08-03 19:54:33,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 176 transitions, 1079 flow [2023-08-03 19:54:34,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 176 transitions, 1076 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 19:54:34,068 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 311 flow [2023-08-03 19:54:34,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2023-08-03 19:54:34,068 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2023-08-03 19:54:34,068 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 311 flow [2023-08-03 19:54:34,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 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 19:54:34,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:34,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2023-08-03 19:54:34,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:34,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:54:34,275 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:34,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1190821335, now seen corresponding path program 1 times [2023-08-03 19:54:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:34,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771055818] [2023-08-03 19:54:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:34,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:34,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624943518] [2023-08-03 19:54:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:34,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:34,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:34,293 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:34,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:54:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:34,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 19:54:34,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:54:34,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:54:34,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771055818] [2023-08-03 19:54:34,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624943518] [2023-08-03 19:54:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624943518] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:34,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:54:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-08-03 19:54:34,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379615360] [2023-08-03 19:54:34,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:34,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:54:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:54:34,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:54:34,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 656 [2023-08-03 19:54:34,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 269.2857142857143) internal successors, (1885), 7 states have internal predecessors, (1885), 0 states have call successors, (0), 0 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 19:54:34,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:34,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 656 [2023-08-03 19:54:34,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:39,258 INFO L124 PetriNetUnfolderBase]: 38178/51772 cut-off events. [2023-08-03 19:54:39,258 INFO L125 PetriNetUnfolderBase]: For 34228/37872 co-relation queries the response was YES. [2023-08-03 19:54:39,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127015 conditions, 51772 events. 38178/51772 cut-off events. For 34228/37872 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 310951 event pairs, 11660 based on Foata normal form. 5194/49197 useless extension candidates. Maximal degree in co-relation 126982. Up to 24093 conditions per place. [2023-08-03 19:54:39,673 INFO L140 encePairwiseOnDemand]: 646/656 looper letters, 117 selfloop transitions, 12 changer transitions 0/140 dead transitions. [2023-08-03 19:54:39,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 853 flow [2023-08-03 19:54:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:54:39,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:54:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2216 transitions. [2023-08-03 19:54:39,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222560975609756 [2023-08-03 19:54:39,677 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2216 transitions. [2023-08-03 19:54:39,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2216 transitions. [2023-08-03 19:54:39,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:39,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2216 transitions. [2023-08-03 19:54:39,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 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 19:54:39,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 656.0) internal successors, (5904), 9 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 19:54:39,684 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 656.0) internal successors, (5904), 9 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 19:54:39,684 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 311 flow. Second operand 8 states and 2216 transitions. [2023-08-03 19:54:39,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 853 flow [2023-08-03 19:54:39,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 140 transitions, 838 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-03 19:54:39,770 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 384 flow [2023-08-03 19:54:39,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2023-08-03 19:54:39,770 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2023-08-03 19:54:39,770 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 384 flow [2023-08-03 19:54:39,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.2857142857143) internal successors, (1885), 7 states have internal predecessors, (1885), 0 states have call successors, (0), 0 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 19:54:39,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:39,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:39,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:39,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 19:54:39,983 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:39,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash 784043470, now seen corresponding path program 1 times [2023-08-03 19:54:39,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:39,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957352444] [2023-08-03 19:54:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:39,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:39,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131722514] [2023-08-03 19:54:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:39,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:39,997 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:40,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:54:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:40,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 19:54:40,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:54:40,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:54:40,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:40,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957352444] [2023-08-03 19:54:40,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:40,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131722514] [2023-08-03 19:54:40,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131722514] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:40,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:54:40,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-08-03 19:54:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988974499] [2023-08-03 19:54:40,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:40,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:54:40,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:40,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:54:40,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:54:40,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 656 [2023-08-03 19:54:40,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 269.2857142857143) internal successors, (1885), 7 states have internal predecessors, (1885), 0 states have call successors, (0), 0 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 19:54:40,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:40,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 656 [2023-08-03 19:54:40,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:46,806 INFO L124 PetriNetUnfolderBase]: 55722/75106 cut-off events. [2023-08-03 19:54:46,806 INFO L125 PetriNetUnfolderBase]: For 85166/89482 co-relation queries the response was YES. [2023-08-03 19:54:47,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202481 conditions, 75106 events. 55722/75106 cut-off events. For 85166/89482 co-relation queries the response was YES. Maximal size of possible extension queue 1952. Compared 458741 event pairs, 18420 based on Foata normal form. 6506/70225 useless extension candidates. Maximal degree in co-relation 202412. Up to 36489 conditions per place. [2023-08-03 19:54:47,582 INFO L140 encePairwiseOnDemand]: 646/656 looper letters, 117 selfloop transitions, 12 changer transitions 0/140 dead transitions. [2023-08-03 19:54:47,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 140 transitions, 934 flow [2023-08-03 19:54:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:54:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:54:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2212 transitions. [2023-08-03 19:54:47,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214939024390244 [2023-08-03 19:54:47,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2212 transitions. [2023-08-03 19:54:47,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2212 transitions. [2023-08-03 19:54:47,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:47,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2212 transitions. [2023-08-03 19:54:47,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 276.5) internal successors, (2212), 8 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 19:54:47,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 656.0) internal successors, (5904), 9 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 19:54:47,593 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 656.0) internal successors, (5904), 9 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 19:54:47,593 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 384 flow. Second operand 8 states and 2212 transitions. [2023-08-03 19:54:47,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 140 transitions, 934 flow [2023-08-03 19:54:47,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 140 transitions, 934 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:54:47,725 INFO L231 Difference]: Finished difference. Result has 107 places, 81 transitions, 428 flow [2023-08-03 19:54:47,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=107, PETRI_TRANSITIONS=81} [2023-08-03 19:54:47,726 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2023-08-03 19:54:47,726 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 81 transitions, 428 flow [2023-08-03 19:54:47,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.2857142857143) internal successors, (1885), 7 states have internal predecessors, (1885), 0 states have call successors, (0), 0 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 19:54:47,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:47,726 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:47,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:47,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:54:47,927 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:47,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1583275369, now seen corresponding path program 1 times [2023-08-03 19:54:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769996068] [2023-08-03 19:54:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:47,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:47,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568006507] [2023-08-03 19:54:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:47,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:47,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:47,940 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:47,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:54:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:48,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 19:54:48,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 19:54:48,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:54:48,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769996068] [2023-08-03 19:54:48,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568006507] [2023-08-03 19:54:48,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568006507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:54:48,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:54:48,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 19:54:48,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278999945] [2023-08-03 19:54:48,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:54:48,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 19:54:48,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:48,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 19:54:48,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:54:49,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 656 [2023-08-03 19:54:49,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 81 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 271.6666666666667) internal successors, (1630), 6 states have internal predecessors, (1630), 0 states have call successors, (0), 0 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 19:54:49,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:49,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 656 [2023-08-03 19:54:49,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:56,168 INFO L124 PetriNetUnfolderBase]: 55722/74339 cut-off events. [2023-08-03 19:54:56,168 INFO L125 PetriNetUnfolderBase]: For 109964/114280 co-relation queries the response was YES. [2023-08-03 19:54:56,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221445 conditions, 74339 events. 55722/74339 cut-off events. For 109964/114280 co-relation queries the response was YES. Maximal size of possible extension queue 1917. Compared 443652 event pairs, 37668 based on Foata normal form. 4317/66978 useless extension candidates. Maximal degree in co-relation 221359. Up to 69380 conditions per place. [2023-08-03 19:54:56,826 INFO L140 encePairwiseOnDemand]: 649/656 looper letters, 64 selfloop transitions, 2 changer transitions 7/84 dead transitions. [2023-08-03 19:54:56,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 84 transitions, 597 flow [2023-08-03 19:54:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:54:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:54:56,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2179 transitions. [2023-08-03 19:54:56,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41520579268292684 [2023-08-03 19:54:56,829 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2179 transitions. [2023-08-03 19:54:56,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2179 transitions. [2023-08-03 19:54:56,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:56,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2179 transitions. [2023-08-03 19:54:56,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.375) internal successors, (2179), 8 states have internal predecessors, (2179), 0 states have call successors, (0), 0 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 19:54:56,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 656.0) internal successors, (5904), 9 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 19:54:56,836 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 656.0) internal successors, (5904), 9 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 19:54:56,836 INFO L175 Difference]: Start difference. First operand has 107 places, 81 transitions, 428 flow. Second operand 8 states and 2179 transitions. [2023-08-03 19:54:56,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 84 transitions, 597 flow [2023-08-03 19:54:57,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 84 transitions, 584 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:54:57,025 INFO L231 Difference]: Finished difference. Result has 112 places, 77 transitions, 384 flow [2023-08-03 19:54:57,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=112, PETRI_TRANSITIONS=77} [2023-08-03 19:54:57,026 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2023-08-03 19:54:57,026 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 77 transitions, 384 flow [2023-08-03 19:54:57,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.6666666666667) internal successors, (1630), 6 states have internal predecessors, (1630), 0 states have call successors, (0), 0 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 19:54:57,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:57,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:57,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-03 19:54:57,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:54:57,227 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:57,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:57,227 INFO L85 PathProgramCache]: Analyzing trace with hash -91052278, now seen corresponding path program 1 times [2023-08-03 19:54:57,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:57,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062096756] [2023-08-03 19:54:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:57,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:57,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:54:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196064782] [2023-08-03 19:54:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:57,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:57,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:57,244 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:57,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 19:54:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:57,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:54:57,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:54:57,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:54:57,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:57,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062096756] [2023-08-03 19:54:57,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:54:57,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196064782] [2023-08-03 19:54:57,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196064782] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 19:54:57,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:54:57,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-03 19:54:57,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958942624] [2023-08-03 19:54:57,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:54:57,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:54:57,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:57,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:54:57,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:54:57,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 656 [2023-08-03 19:54:57,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 77 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 275.2) internal successors, (1376), 5 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 19:54:57,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:57,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 656 [2023-08-03 19:54:57,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:55:03,975 INFO L124 PetriNetUnfolderBase]: 55720/74333 cut-off events. [2023-08-03 19:55:03,975 INFO L125 PetriNetUnfolderBase]: For 109937/114253 co-relation queries the response was YES. [2023-08-03 19:55:04,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221409 conditions, 74333 events. 55720/74333 cut-off events. For 109937/114253 co-relation queries the response was YES. Maximal size of possible extension queue 1917. Compared 443750 event pairs, 37668 based on Foata normal form. 4317/66972 useless extension candidates. Maximal degree in co-relation 221369. Up to 69379 conditions per place. [2023-08-03 19:55:04,666 INFO L140 encePairwiseOnDemand]: 651/656 looper letters, 63 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-08-03 19:55:04,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 78 transitions, 522 flow [2023-08-03 19:55:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:55:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:55:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1388 transitions. [2023-08-03 19:55:04,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42317073170731706 [2023-08-03 19:55:04,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1388 transitions. [2023-08-03 19:55:04,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1388 transitions. [2023-08-03 19:55:04,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:55:04,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1388 transitions. [2023-08-03 19:55:04,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 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 19:55:04,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:55:04,672 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:55:04,672 INFO L175 Difference]: Start difference. First operand has 112 places, 77 transitions, 384 flow. Second operand 5 states and 1388 transitions. [2023-08-03 19:55:04,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 78 transitions, 522 flow [2023-08-03 19:55:04,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 78 transitions, 504 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-03 19:55:04,872 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 384 flow [2023-08-03 19:55:04,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2023-08-03 19:55:04,872 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2023-08-03 19:55:04,873 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 384 flow [2023-08-03 19:55:04,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.2) internal successors, (1376), 5 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 19:55:04,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:55:04,873 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:55:04,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-03 19:55:05,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:55:05,074 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:55:05,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:55:05,074 INFO L85 PathProgramCache]: Analyzing trace with hash 337348805, now seen corresponding path program 1 times [2023-08-03 19:55:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:55:05,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006852673] [2023-08-03 19:55:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:05,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:55:05,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:55:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658191774] [2023-08-03 19:55:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:05,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:55:05,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:55:05,092 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:55:05,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-03 19:55:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:55:05,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 19:55:05,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:55:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:55:05,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:55:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:55:05,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:55:05,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006852673] [2023-08-03 19:55:05,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:55:05,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658191774] [2023-08-03 19:55:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658191774] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 19:55:05,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:55:05,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-03 19:55:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202183861] [2023-08-03 19:55:05,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:55:05,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:55:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:55:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:55:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:55:05,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 656 [2023-08-03 19:55:05,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 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 19:55:05,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:55:05,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 656 [2023-08-03 19:55:05,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:55:12,645 INFO L124 PetriNetUnfolderBase]: 64233/84585 cut-off events. [2023-08-03 19:55:12,645 INFO L125 PetriNetUnfolderBase]: For 141842/147082 co-relation queries the response was YES. [2023-08-03 19:55:13,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259000 conditions, 84585 events. 64233/84585 cut-off events. For 141842/147082 co-relation queries the response was YES. Maximal size of possible extension queue 2035. Compared 503681 event pairs, 28917 based on Foata normal form. 5240/79966 useless extension candidates. Maximal degree in co-relation 258958. Up to 49604 conditions per place. [2023-08-03 19:55:13,428 INFO L140 encePairwiseOnDemand]: 650/656 looper letters, 108 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2023-08-03 19:55:13,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 123 transitions, 850 flow [2023-08-03 19:55:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:55:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:55:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1402 transitions. [2023-08-03 19:55:13,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274390243902439 [2023-08-03 19:55:13,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1402 transitions. [2023-08-03 19:55:13,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1402 transitions. [2023-08-03 19:55:13,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:55:13,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1402 transitions. [2023-08-03 19:55:13,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.4) internal successors, (1402), 5 states have internal predecessors, (1402), 0 states have call successors, (0), 0 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 19:55:13,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:55:13,435 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:55:13,435 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 384 flow. Second operand 5 states and 1402 transitions. [2023-08-03 19:55:13,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 123 transitions, 850 flow [2023-08-03 19:55:13,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 123 transitions, 845 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:55:13,630 INFO L231 Difference]: Finished difference. Result has 107 places, 79 transitions, 402 flow [2023-08-03 19:55:13,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=107, PETRI_TRANSITIONS=79} [2023-08-03 19:55:13,630 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2023-08-03 19:55:13,630 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 79 transitions, 402 flow [2023-08-03 19:55:13,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 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 19:55:13,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:55:13,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:55:13,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-03 19:55:13,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:55:13,831 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:55:13,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:55:13,832 INFO L85 PathProgramCache]: Analyzing trace with hash -204379697, now seen corresponding path program 1 times [2023-08-03 19:55:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:55:13,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132917287] [2023-08-03 19:55:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:55:13,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:55:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904925385] [2023-08-03 19:55:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:13,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:55:13,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:55:13,848 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:55:13,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-03 19:55:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:55:14,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 19:55:14,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:55:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:55:14,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:55:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:55:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:55:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132917287] [2023-08-03 19:55:14,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 19:55:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904925385] [2023-08-03 19:55:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904925385] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 19:55:14,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:55:14,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-03 19:55:14,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460640292] [2023-08-03 19:55:14,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:55:14,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:55:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:55:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:55:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:55:14,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 656 [2023-08-03 19:55:14,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 79 transitions, 402 flow. Second operand has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 19:55:14,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:55:14,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 656 [2023-08-03 19:55:14,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:55:21,650 INFO L124 PetriNetUnfolderBase]: 60828/83146 cut-off events. [2023-08-03 19:55:21,650 INFO L125 PetriNetUnfolderBase]: For 161131/173217 co-relation queries the response was YES. [2023-08-03 19:55:22,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274774 conditions, 83146 events. 60828/83146 cut-off events. For 161131/173217 co-relation queries the response was YES. Maximal size of possible extension queue 1973. Compared 518190 event pairs, 36342 based on Foata normal form. 12086/92210 useless extension candidates. Maximal degree in co-relation 274729. Up to 47393 conditions per place. [2023-08-03 19:55:22,391 INFO L140 encePairwiseOnDemand]: 650/656 looper letters, 107 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2023-08-03 19:55:22,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 122 transitions, 869 flow [2023-08-03 19:55:22,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:55:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:55:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1400 transitions. [2023-08-03 19:55:22,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2023-08-03 19:55:22,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1400 transitions. [2023-08-03 19:55:22,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1400 transitions. [2023-08-03 19:55:22,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:55:22,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1400 transitions. [2023-08-03 19:55:22,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 19:55:22,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:55:22,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 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 19:55:22,398 INFO L175 Difference]: Start difference. First operand has 107 places, 79 transitions, 402 flow. Second operand 5 states and 1400 transitions. [2023-08-03 19:55:22,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 122 transitions, 869 flow [2023-08-03 19:55:22,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 122 transitions, 861 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:55:22,656 INFO L231 Difference]: Finished difference. Result has 110 places, 80 transitions, 419 flow [2023-08-03 19:55:22,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2023-08-03 19:55:22,657 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2023-08-03 19:55:22,657 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 419 flow [2023-08-03 19:55:22,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 19:55:22,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:55:22,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:55:22,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-03 19:55:22,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:55:22,858 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:55:22,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:55:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1721853606, now seen corresponding path program 1 times [2023-08-03 19:55:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:55:22,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67208834] [2023-08-03 19:55:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:22,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:55:22,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 19:55:22,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776281180] [2023-08-03 19:55:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:22,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:55:22,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:55:22,877 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:55:22,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-03 19:55:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:55:23,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 132 conjunts are in the unsatisfiable core [2023-08-03 19:55:23,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:55:23,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,248 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-03 19:55:23,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2023-08-03 19:55:23,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,334 INFO L322 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-08-03 19:55:23,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 45 [2023-08-03 19:55:23,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,445 INFO L322 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-08-03 19:55:23,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2023-08-03 19:55:23,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,562 INFO L322 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2023-08-03 19:55:23,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 39 [2023-08-03 19:55:23,782 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 19:55:23,795 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 19:55:23,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2023-08-03 19:55:23,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:23,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 19:55:24,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:24,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2023-08-03 19:55:24,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:24,206 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 19:55:24,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-08-03 19:55:24,365 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 19:55:24,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:24,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-08-03 19:55:24,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:24,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 19:55:25,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 19:55:25,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-08-03 19:55:25,286 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-08-03 19:55:25,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:25,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 19:55:25,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:25,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 23 [2023-08-03 19:55:25,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:55:25,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-08-03 19:55:25,577 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-03 19:55:25,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 50 [2023-08-03 19:55:25,585 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-03 19:55:25,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2023-08-03 19:55:26,154 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-03 19:55:26,155 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 61 [2023-08-03 19:55:26,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-03 19:55:26,185 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-08-03 19:55:27,003 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-03 19:55:27,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 38 [2023-08-03 19:55:27,015 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-03 19:55:27,016 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2023-08-03 19:55:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:55:27,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:55:40,014 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1999 (Array Int Int)) (v_ArrVal_1998 (Array Int Int)) (v_ArrVal_1997 (Array Int Int)) (v_ArrVal_1996 (Array Int Int)) (v_~b~0_94 Int) (v_ArrVal_2002 (Array Int Int)) (v_~a~0_90 Int)) (or (<= c_~M~0 v_~b~0_94) (<= c_~N~0 v_~a~0_90) (< v_~a~0_90 0) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_thread2Thread1of2ForFork0_#t~mem5.base| v_ArrVal_1997))) (let ((.cse3 (select (select .cse2 c_~B~0.base) c_~B~0.offset)) (.cse5 (store |c_#memory_$Pointer$.offset| |c_thread2Thread1of2ForFork0_#t~mem5.base| v_ArrVal_1996))) (let ((.cse0 (let ((.cse6 (store |c_#memory_int| |c_thread2Thread1of2ForFork0_#t~mem5.base| v_ArrVal_1998))) (store .cse6 .cse3 (store (select .cse6 .cse3) (select (select .cse5 c_~B~0.base) c_~B~0.offset) (select (select .cse6 c_~F~0.base) c_~F~0.offset))))) (.cse1 (* v_~b~0_94 4))) (= (select (select .cse0 c_~A~0.base) (+ (* (* v_~a~0_90 c_~M~0) 4) c_~A~0.offset .cse1)) (let ((.cse4 (+ c_~B~0.offset (* v_~a~0_90 4)))) (select (select .cse0 (select (select (store .cse2 .cse3 v_ArrVal_1999) c_~B~0.base) .cse4)) (+ (select (select (store .cse5 .cse3 v_ArrVal_2002) c_~B~0.base) .cse4) .cse1))))))) (< v_~b~0_94 0))) is different from false [2023-08-03 19:55:40,078 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1999 (Array Int Int)) (v_ArrVal_1998 (Array Int Int)) (v_ArrVal_1997 (Array Int Int)) (v_ArrVal_1996 (Array Int Int)) (v_~b~0_94 Int) (v_ArrVal_2002 (Array Int Int)) (v_~a~0_90 Int)) (or (<= c_~M~0 v_~b~0_94) (<= c_~N~0 v_~a~0_90) (< v_~a~0_90 0) (< v_~b~0_94 0) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of2ForFork0_~i~1 4) c_~B~0.offset)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| .cse7 v_ArrVal_1997))) (let ((.cse2 (select (select .cse1 c_~B~0.base) c_~B~0.offset)) (.cse5 (store |c_#memory_$Pointer$.offset| .cse7 v_ArrVal_1996))) (let ((.cse0 (let ((.cse6 (store |c_#memory_int| .cse7 v_ArrVal_1998))) (store .cse6 .cse2 (store (select .cse6 .cse2) (select (select .cse5 c_~B~0.base) c_~B~0.offset) (select (select .cse6 c_~F~0.base) c_~F~0.offset))))) (.cse4 (* v_~b~0_94 4))) (= (let ((.cse3 (+ c_~B~0.offset (* v_~a~0_90 4)))) (select (select .cse0 (select (select (store .cse1 .cse2 v_ArrVal_1999) c_~B~0.base) .cse3)) (+ .cse4 (select (select (store .cse5 .cse2 v_ArrVal_2002) c_~B~0.base) .cse3)))) (select (select .cse0 c_~A~0.base) (+ (* (* v_~a~0_90 c_~M~0) 4) c_~A~0.offset .cse4))))))))) is different from false [2023-08-03 19:55:40,180 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1999 (Array Int Int)) (v_ArrVal_1998 (Array Int Int)) (v_ArrVal_1997 (Array Int Int)) (v_ArrVal_1996 (Array Int Int)) (v_ArrVal_1995 (Array Int Int)) (v_ArrVal_1994 (Array Int Int)) (v_ArrVal_1993 (Array Int Int)) (v_~b~0_94 Int) (v_ArrVal_2002 (Array Int Int)) (v_~a~0_90 Int)) (or (<= c_~M~0 v_~b~0_94) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1995))) (let ((.cse7 (select (select .cse8 c_~B~0.base) (+ (* c_thread2Thread1of2ForFork0_~i~1 4) c_~B~0.offset)))) (let ((.cse1 (store .cse8 .cse7 v_ArrVal_1997))) (let ((.cse2 (select (select .cse1 c_~B~0.base) c_~B~0.offset)) (.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1994) .cse7 v_ArrVal_1996))) (let ((.cse0 (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1993) .cse7 v_ArrVal_1998))) (store .cse6 .cse2 (store (select .cse6 .cse2) (select (select .cse4 c_~B~0.base) c_~B~0.offset) (select (select .cse6 c_~F~0.base) c_~F~0.offset))))) (.cse5 (* v_~b~0_94 4))) (= (let ((.cse3 (+ c_~B~0.offset (* v_~a~0_90 4)))) (select (select .cse0 (select (select (store .cse1 .cse2 v_ArrVal_1999) c_~B~0.base) .cse3)) (+ (select (select (store .cse4 .cse2 v_ArrVal_2002) c_~B~0.base) .cse3) .cse5))) (select (select .cse0 c_~A~0.base) (+ (* (* v_~a~0_90 c_~M~0) 4) c_~A~0.offset .cse5)))))))) (<= c_~N~0 v_~a~0_90) (< v_~a~0_90 0) (< v_~b~0_94 0))) is different from false [2023-08-03 19:55:40,820 INFO L322 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-08-03 19:55:40,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 572 treesize of output 477 [2023-08-03 19:55:40,965 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:55:40,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 919190 treesize of output 859562 [2023-08-03 19:55:45,771 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:55:45,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 296676 treesize of output 240905 [2023-08-03 19:55:51,795 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 950 DAG size of output: 947 (called from [L 729] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-03 19:55:52,199 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:55:52,200 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 281956 treesize of output 252905 [2023-08-03 19:57:09,269 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:09,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97144 treesize of output 95214