/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:57:15,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:57:15,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:57:15,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:57:15,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:57:15,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:57:15,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:57:15,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:57:15,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:57:15,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:57:15,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:57:15,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:57:15,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:57:15,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:57:15,721 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:57:15,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:57:15,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:57:15,722 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:57:15,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:57:15,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:57:15,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:57:15,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:57:15,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:57:15,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:57:15,724 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:57:15,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:57:15,725 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:57:15,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:57:15,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:57:15,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:57:15,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:57:15,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:57:15,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:57:15,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:57:15,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:57:15,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:57:15,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:57:15,728 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:57:15,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:57:15,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:57:15,728 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:57:15,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:57:15,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:57:15,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:57:15,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:57:15,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:57:15,949 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:57:15,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i [2023-08-03 21:57:17,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:57:17,325 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:57:17,326 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i [2023-08-03 21:57:17,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c670e7b71/aeecf208e539426fae2b966d9f380e75/FLAG2deee4c6b [2023-08-03 21:57:17,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c670e7b71/aeecf208e539426fae2b966d9f380e75 [2023-08-03 21:57:17,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:57:17,366 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:57:17,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:57:17,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:57:17,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:57:17,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a170a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17, skipping insertion in model container [2023-08-03 21:57:17,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,425 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:57:17,748 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i[30726,30739] [2023-08-03 21:57:17,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:57:17,765 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:57:17,794 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-03 21:57:17,795 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-03 21:57:17,817 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i[30726,30739] [2023-08-03 21:57:17,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:57:17,846 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:57:17,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17 WrapperNode [2023-08-03 21:57:17,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:57:17,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:57:17,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:57:17,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:57:17,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,880 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 87 [2023-08-03 21:57:17,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:57:17,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:57:17,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:57:17,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:57:17,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:57:17,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:57:17,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:57:17,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:57:17,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (1/1) ... [2023-08-03 21:57:17,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:57:17,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:57:17,938 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 21:57:17,940 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 21:57:17,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:57:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 21:57:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 21:57:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:57:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:57:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:57:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:57:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:57:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:57:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:57:17,970 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 21:57:18,068 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:57:18,070 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:57:18,281 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:57:18,349 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:57:18,350 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 21:57:18,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:57:18 BoogieIcfgContainer [2023-08-03 21:57:18,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:57:18,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:57:18,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:57:18,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:57:18,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:57:17" (1/3) ... [2023-08-03 21:57:18,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:57:18, skipping insertion in model container [2023-08-03 21:57:18,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:57:17" (2/3) ... [2023-08-03 21:57:18,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:57:18, skipping insertion in model container [2023-08-03 21:57:18,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:57:18" (3/3) ... [2023-08-03 21:57:18,358 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_37_stack_lock_p0_vs_concur_bound2.i [2023-08-03 21:57:18,367 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:57:18,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:57:18,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:57:18,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:57:18,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:57:18,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 77 transitions, 159 flow [2023-08-03 21:57:18,519 INFO L124 PetriNetUnfolderBase]: 7/87 cut-off events. [2023-08-03 21:57:18,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:57:18,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 7/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 96 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-03 21:57:18,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 77 transitions, 159 flow [2023-08-03 21:57:18,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 77 transitions, 159 flow [2023-08-03 21:57:18,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:57:18,542 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 77 transitions, 159 flow [2023-08-03 21:57:18,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 77 transitions, 159 flow [2023-08-03 21:57:18,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 77 transitions, 159 flow [2023-08-03 21:57:18,572 INFO L124 PetriNetUnfolderBase]: 7/87 cut-off events. [2023-08-03 21:57:18,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:57:18,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 7/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 96 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-03 21:57:18,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 1440 [2023-08-03 21:57:20,059 INFO L134 LiptonReduction]: Checked pairs total: 1834 [2023-08-03 21:57:20,059 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-03 21:57:20,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:57:20,075 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;@341ca8ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:57:20,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:57:20,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:57:20,079 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-03 21:57:20,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:57:20,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:20,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:57:20,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:57:20,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1472275748, now seen corresponding path program 1 times [2023-08-03 21:57:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763798757] [2023-08-03 21:57:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:20,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:57:20,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:57:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:57:20,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:57:20,217 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:57:20,218 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:57:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:57:20,219 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:57:20,222 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:57:20,222 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:57:20,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:57:20,244 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:57:20,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:20,268 INFO L124 PetriNetUnfolderBase]: 13/148 cut-off events. [2023-08-03 21:57:20,269 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:57:20,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 148 events. 13/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 21:57:20,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:20,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:20,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:57:20,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:20,272 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:20,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:20,301 INFO L124 PetriNetUnfolderBase]: 13/148 cut-off events. [2023-08-03 21:57:20,301 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:57:20,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 148 events. 13/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 21:57:20,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 7020 [2023-08-03 21:57:21,624 INFO L134 LiptonReduction]: Checked pairs total: 16748 [2023-08-03 21:57:21,624 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-03 21:57:21,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:57:21,627 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;@341ca8ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:57:21,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:57:21,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:57:21,632 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-08-03 21:57:21,632 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:57:21,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:21,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:57:21,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:57:21,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:21,633 INFO L85 PathProgramCache]: Analyzing trace with hash -425759687, now seen corresponding path program 1 times [2023-08-03 21:57:21,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:21,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376777150] [2023-08-03 21:57:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:21,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:57:21,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376777150] [2023-08-03 21:57:21,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376777150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:57:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649202760] [2023-08-03 21:57:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:21,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:57:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:57:21,784 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 21:57:21,794 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 21:57:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:21,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:57:21,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:57:21,900 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 21:57:21,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:57:21,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649202760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:57:21,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:57:21,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:57:21,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736894491] [2023-08-03 21:57:21,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:57:21,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:57:21,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:57:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:57:21,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-03 21:57:21,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 21:57:21,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:21,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-03 21:57:21,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:22,191 INFO L124 PetriNetUnfolderBase]: 679/1310 cut-off events. [2023-08-03 21:57:22,192 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-03 21:57:22,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2465 conditions, 1310 events. 679/1310 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7246 event pairs, 75 based on Foata normal form. 39/1152 useless extension candidates. Maximal degree in co-relation 399. Up to 795 conditions per place. [2023-08-03 21:57:22,197 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2023-08-03 21:57:22,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 81 transitions, 298 flow [2023-08-03 21:57:22,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:57:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:57:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2023-08-03 21:57:22,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2023-08-03 21:57:22,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2023-08-03 21:57:22,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2023-08-03 21:57:22,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:57:22,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2023-08-03 21:57:22,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 21:57:22,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:57:22,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:57:22,226 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 108 flow. Second operand 5 states and 567 transitions. [2023-08-03 21:57:22,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 81 transitions, 298 flow [2023-08-03 21:57:22,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 81 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:57:22,231 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-03 21:57:22,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-03 21:57:22,235 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-03 21:57:22,236 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-03 21:57:22,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 21:57:22,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:57:22,247 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 21:57:22,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:57:22,442 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:57:22,443 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:57:22,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:22,462 INFO L124 PetriNetUnfolderBase]: 13/148 cut-off events. [2023-08-03 21:57:22,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:57:22,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 148 events. 13/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 21:57:22,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:22,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:22,465 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:57:22,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:22,466 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:22,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 21:57:22,482 INFO L124 PetriNetUnfolderBase]: 13/148 cut-off events. [2023-08-03 21:57:22,483 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:57:22,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 148 events. 13/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 21:57:22,488 INFO L119 LiptonReduction]: Number of co-enabled transitions 7020 [2023-08-03 21:57:23,867 INFO L134 LiptonReduction]: Checked pairs total: 17274 [2023-08-03 21:57:23,868 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-03 21:57:23,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:57:23,870 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;@341ca8ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:57:23,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:57:23,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:57:23,875 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2023-08-03 21:57:23,875 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:57:23,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:23,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:57:23,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:57:23,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1593227362, now seen corresponding path program 1 times [2023-08-03 21:57:23,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:23,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21079306] [2023-08-03 21:57:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:23,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:23,964 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 21:57:23,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:23,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21079306] [2023-08-03 21:57:23,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21079306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:57:23,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:57:23,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:57:23,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28549553] [2023-08-03 21:57:23,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:57:23,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:57:23,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:57:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:57:23,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 217 [2023-08-03 21:57:23,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 21:57:23,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:23,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 217 [2023-08-03 21:57:23,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:24,136 INFO L124 PetriNetUnfolderBase]: 881/1770 cut-off events. [2023-08-03 21:57:24,136 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-03 21:57:24,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 1770 events. 881/1770 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 10430 event pairs, 720 based on Foata normal form. 92/1510 useless extension candidates. Maximal degree in co-relation 2457. Up to 1292 conditions per place. [2023-08-03 21:57:24,145 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 37 selfloop transitions, 1 changer transitions 1/57 dead transitions. [2023-08-03 21:57:24,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 209 flow [2023-08-03 21:57:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:57:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:57:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-03 21:57:24,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533026113671275 [2023-08-03 21:57:24,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-03 21:57:24,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-03 21:57:24,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:57:24,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-03 21:57:24,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:57:24,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 21:57:24,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 21:57:24,150 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 112 flow. Second operand 3 states and 347 transitions. [2023-08-03 21:57:24,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 209 flow [2023-08-03 21:57:24,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 207 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 21:57:24,152 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 100 flow [2023-08-03 21:57:24,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-03 21:57:24,153 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-03 21:57:24,153 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 100 flow [2023-08-03 21:57:24,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 21:57:24,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:24,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:57:24,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:57:24,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:57:24,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash 414174994, now seen corresponding path program 1 times [2023-08-03 21:57:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:24,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119046757] [2023-08-03 21:57:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:24,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:24,234 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 21:57:24,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119046757] [2023-08-03 21:57:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119046757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:57:24,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:57:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:57:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164242149] [2023-08-03 21:57:24,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:57:24,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:57:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:57:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:57:24,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-03 21:57:24,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 21:57:24,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:24,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-03 21:57:24,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:24,952 INFO L124 PetriNetUnfolderBase]: 3083/5954 cut-off events. [2023-08-03 21:57:24,952 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-08-03 21:57:24,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11164 conditions, 5954 events. 3083/5954 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 41374 event pairs, 669 based on Foata normal form. 0/5144 useless extension candidates. Maximal degree in co-relation 10524. Up to 1620 conditions per place. [2023-08-03 21:57:24,982 INFO L140 encePairwiseOnDemand]: 205/217 looper letters, 121 selfloop transitions, 33 changer transitions 0/169 dead transitions. [2023-08-03 21:57:24,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 169 transitions, 695 flow [2023-08-03 21:57:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 21:57:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 21:57:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 970 transitions. [2023-08-03 21:57:24,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49667178699436765 [2023-08-03 21:57:24,986 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 970 transitions. [2023-08-03 21:57:24,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 970 transitions. [2023-08-03 21:57:24,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:57:24,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 970 transitions. [2023-08-03 21:57:24,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.77777777777777) internal successors, (970), 9 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 21:57:24,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states 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 21:57:24,992 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states 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 21:57:24,992 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 100 flow. Second operand 9 states and 970 transitions. [2023-08-03 21:57:24,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 169 transitions, 695 flow [2023-08-03 21:57:24,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 169 transitions, 693 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:57:24,998 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 351 flow [2023-08-03 21:57:24,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=351, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-08-03 21:57:24,999 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-08-03 21:57:24,999 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 351 flow [2023-08-03 21:57:24,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 21:57:24,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:24,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:57:25,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:57:25,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:57:25,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1758156927, now seen corresponding path program 1 times [2023-08-03 21:57:25,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:25,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470894308] [2023-08-03 21:57:25,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:25,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:57:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470894308] [2023-08-03 21:57:25,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470894308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:57:25,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945911252] [2023-08-03 21:57:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:25,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:57:25,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:57:25,289 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 21:57:25,291 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 21:57:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:25,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-03 21:57:25,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:57:25,393 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-03 21:57:25,437 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 21:57:25,437 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 11 treesize of output 11 [2023-08-03 21:57:25,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 21:57:25,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 21:57:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:57:25,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:57:25,570 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_81 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_81) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))) is different from false [2023-08-03 21:57:25,608 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:57:25,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-03 21:57:25,619 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:57:25,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-03 21:57:25,665 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2023-08-03 21:57:25,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 21:57:25,675 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 21:57:25,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 21:57:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-03 21:57:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945911252] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:57:25,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:57:25,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2023-08-03 21:57:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342363321] [2023-08-03 21:57:25,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:57:25,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 21:57:25,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:25,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 21:57:25,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=196, Unknown=1, NotChecked=28, Total=272 [2023-08-03 21:57:25,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 217 [2023-08-03 21:57:25,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 351 flow. Second operand has 17 states, 17 states have (on average 69.82352941176471) internal successors, (1187), 17 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 21:57:25,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:25,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 217 [2023-08-03 21:57:25,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:29,952 INFO L124 PetriNetUnfolderBase]: 17567/28716 cut-off events. [2023-08-03 21:57:29,952 INFO L125 PetriNetUnfolderBase]: For 38180/38180 co-relation queries the response was YES. [2023-08-03 21:57:30,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81319 conditions, 28716 events. 17567/28716 cut-off events. For 38180/38180 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 202556 event pairs, 1678 based on Foata normal form. 543/28646 useless extension candidates. Maximal degree in co-relation 71609. Up to 4979 conditions per place. [2023-08-03 21:57:30,170 INFO L140 encePairwiseOnDemand]: 196/217 looper letters, 680 selfloop transitions, 323 changer transitions 5/1014 dead transitions. [2023-08-03 21:57:30,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 1014 transitions, 6214 flow [2023-08-03 21:57:30,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-03 21:57:30,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-03 21:57:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4445 transitions. [2023-08-03 21:57:30,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386488131466829 [2023-08-03 21:57:30,182 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 4445 transitions. [2023-08-03 21:57:30,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 4445 transitions. [2023-08-03 21:57:30,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:57:30,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 4445 transitions. [2023-08-03 21:57:30,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 83.86792452830188) internal successors, (4445), 53 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states 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 21:57:30,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 217.0) internal successors, (11718), 54 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states 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 21:57:30,211 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 217.0) internal successors, (11718), 54 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states 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 21:57:30,211 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 351 flow. Second operand 53 states and 4445 transitions. [2023-08-03 21:57:30,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 1014 transitions, 6214 flow [2023-08-03 21:57:30,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 1014 transitions, 6214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:57:30,299 INFO L231 Difference]: Finished difference. Result has 144 places, 407 transitions, 3598 flow [2023-08-03 21:57:30,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3598, PETRI_PLACES=144, PETRI_TRANSITIONS=407} [2023-08-03 21:57:30,300 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 94 predicate places. [2023-08-03 21:57:30,301 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 407 transitions, 3598 flow [2023-08-03 21:57:30,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 69.82352941176471) internal successors, (1187), 17 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 21:57:30,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:30,301 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:57:30,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:57:30,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:57:30,512 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:57:30,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1005974530, now seen corresponding path program 1 times [2023-08-03 21:57:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:30,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312043200] [2023-08-03 21:57:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:30,568 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 21:57:30,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:30,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312043200] [2023-08-03 21:57:30,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312043200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:57:30,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:57:30,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:57:30,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185745458] [2023-08-03 21:57:30,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:57:30,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:57:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:30,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:57:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:57:30,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-03 21:57:30,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 407 transitions, 3598 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 21:57:30,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:30,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-03 21:57:30,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:33,973 INFO L124 PetriNetUnfolderBase]: 13160/25062 cut-off events. [2023-08-03 21:57:33,973 INFO L125 PetriNetUnfolderBase]: For 189963/190366 co-relation queries the response was YES. [2023-08-03 21:57:34,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101245 conditions, 25062 events. 13160/25062 cut-off events. For 189963/190366 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 214211 event pairs, 1645 based on Foata normal form. 646/25042 useless extension candidates. Maximal degree in co-relation 99025. Up to 7226 conditions per place. [2023-08-03 21:57:34,179 INFO L140 encePairwiseOnDemand]: 204/217 looper letters, 672 selfloop transitions, 549 changer transitions 4/1275 dead transitions. [2023-08-03 21:57:34,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 1275 transitions, 13522 flow [2023-08-03 21:57:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 21:57:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 21:57:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 970 transitions. [2023-08-03 21:57:34,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49667178699436765 [2023-08-03 21:57:34,182 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 970 transitions. [2023-08-03 21:57:34,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 970 transitions. [2023-08-03 21:57:34,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:57:34,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 970 transitions. [2023-08-03 21:57:34,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.77777777777777) internal successors, (970), 9 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 21:57:34,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states 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 21:57:34,188 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states 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 21:57:34,188 INFO L175 Difference]: Start difference. First operand has 144 places, 407 transitions, 3598 flow. Second operand 9 states and 970 transitions. [2023-08-03 21:57:34,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 1275 transitions, 13522 flow [2023-08-03 21:57:34,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1275 transitions, 13136 flow, removed 193 selfloop flow, removed 0 redundant places. [2023-08-03 21:57:34,990 INFO L231 Difference]: Finished difference. Result has 160 places, 895 transitions, 10798 flow [2023-08-03 21:57:34,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10798, PETRI_PLACES=160, PETRI_TRANSITIONS=895} [2023-08-03 21:57:34,991 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 110 predicate places. [2023-08-03 21:57:34,992 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 895 transitions, 10798 flow [2023-08-03 21:57:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 21:57:34,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:34,992 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:57:34,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:57:34,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:57:34,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2067093505, now seen corresponding path program 2 times [2023-08-03 21:57:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:34,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239738628] [2023-08-03 21:57:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:34,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:57:35,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:35,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239738628] [2023-08-03 21:57:35,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239738628] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:57:35,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707409258] [2023-08-03 21:57:35,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 21:57:35,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:57:35,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:57:35,082 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 21:57:35,095 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 21:57:35,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 21:57:35,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:57:35,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:57:35,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:57:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:57:35,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:57:35,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707409258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:57:35,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:57:35,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:57:35,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493875707] [2023-08-03 21:57:35,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:57:35,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:57:35,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:57:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:57:35,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-03 21:57:35,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 895 transitions, 10798 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 21:57:35,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:35,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-03 21:57:35,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:37,896 INFO L124 PetriNetUnfolderBase]: 7458/13916 cut-off events. [2023-08-03 21:57:37,897 INFO L125 PetriNetUnfolderBase]: For 197578/198652 co-relation queries the response was YES. [2023-08-03 21:57:37,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58259 conditions, 13916 events. 7458/13916 cut-off events. For 197578/198652 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 107350 event pairs, 949 based on Foata normal form. 2463/16103 useless extension candidates. Maximal degree in co-relation 55922. Up to 8192 conditions per place. [2023-08-03 21:57:37,996 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 1003 selfloop transitions, 5 changer transitions 19/1143 dead transitions. [2023-08-03 21:57:37,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 1143 transitions, 15816 flow [2023-08-03 21:57:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:57:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:57:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-03 21:57:37,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124423963133641 [2023-08-03 21:57:37,999 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-03 21:57:37,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-03 21:57:37,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:57:37,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-03 21:57:38,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:57:38,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:57:38,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:57:38,002 INFO L175 Difference]: Start difference. First operand has 160 places, 895 transitions, 10798 flow. Second operand 5 states and 556 transitions. [2023-08-03 21:57:38,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 1143 transitions, 15816 flow [2023-08-03 21:57:38,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 1143 transitions, 15446 flow, removed 184 selfloop flow, removed 1 redundant places. [2023-08-03 21:57:38,319 INFO L231 Difference]: Finished difference. Result has 165 places, 697 transitions, 8097 flow [2023-08-03 21:57:38,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=8012, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8097, PETRI_PLACES=165, PETRI_TRANSITIONS=697} [2023-08-03 21:57:38,320 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 115 predicate places. [2023-08-03 21:57:38,320 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 697 transitions, 8097 flow [2023-08-03 21:57:38,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 21:57:38,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:38,321 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-03 21:57:38,325 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 21:57:38,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:57:38,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:57:38,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash -245489881, now seen corresponding path program 1 times [2023-08-03 21:57:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:38,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026577912] [2023-08-03 21:57:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:38,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:57:38,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:38,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026577912] [2023-08-03 21:57:38,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026577912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:57:38,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:57:38,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 21:57:38,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928803281] [2023-08-03 21:57:38,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:57:38,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 21:57:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:38,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 21:57:38,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-03 21:57:39,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 217 [2023-08-03 21:57:39,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 697 transitions, 8097 flow. Second operand has 10 states, 10 states have (on average 84.9) internal successors, (849), 10 states have internal predecessors, (849), 0 states have call successors, (0), 0 states 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 21:57:39,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:39,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 217 [2023-08-03 21:57:39,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:43,334 INFO L124 PetriNetUnfolderBase]: 11963/21421 cut-off events. [2023-08-03 21:57:43,334 INFO L125 PetriNetUnfolderBase]: For 120225/120564 co-relation queries the response was YES. [2023-08-03 21:57:43,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94082 conditions, 21421 events. 11963/21421 cut-off events. For 120225/120564 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 166402 event pairs, 1065 based on Foata normal form. 412/21704 useless extension candidates. Maximal degree in co-relation 93263. Up to 5181 conditions per place. [2023-08-03 21:57:43,691 INFO L140 encePairwiseOnDemand]: 200/217 looper letters, 594 selfloop transitions, 609 changer transitions 25/1272 dead transitions. [2023-08-03 21:57:43,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 1272 transitions, 15920 flow [2023-08-03 21:57:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-03 21:57:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-03 21:57:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2072 transitions. [2023-08-03 21:57:43,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2023-08-03 21:57:43,702 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2072 transitions. [2023-08-03 21:57:43,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2072 transitions. [2023-08-03 21:57:43,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:57:43,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2072 transitions. [2023-08-03 21:57:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.18181818181819) internal successors, (2072), 22 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 21:57:43,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states 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 21:57:43,719 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states 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 21:57:43,719 INFO L175 Difference]: Start difference. First operand has 165 places, 697 transitions, 8097 flow. Second operand 22 states and 2072 transitions. [2023-08-03 21:57:43,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 1272 transitions, 15920 flow [2023-08-03 21:57:44,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 1272 transitions, 15867 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:57:44,352 INFO L231 Difference]: Finished difference. Result has 196 places, 885 transitions, 12826 flow [2023-08-03 21:57:44,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=8046, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12826, PETRI_PLACES=196, PETRI_TRANSITIONS=885} [2023-08-03 21:57:44,353 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 146 predicate places. [2023-08-03 21:57:44,354 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 885 transitions, 12826 flow [2023-08-03 21:57:44,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.9) internal successors, (849), 10 states have internal predecessors, (849), 0 states have call successors, (0), 0 states 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 21:57:44,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:44,354 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-03 21:57:44,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 21:57:44,354 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:57:44,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:44,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1788701975, now seen corresponding path program 2 times [2023-08-03 21:57:44,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:44,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988779468] [2023-08-03 21:57:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:44,617 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 21:57:44,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:44,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988779468] [2023-08-03 21:57:44,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988779468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:57:44,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:57:44,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 21:57:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260698436] [2023-08-03 21:57:44,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:57:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 21:57:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 21:57:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-03 21:57:44,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 217 [2023-08-03 21:57:44,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 885 transitions, 12826 flow. Second operand has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 21:57:44,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:44,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 217 [2023-08-03 21:57:44,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:50,066 INFO L124 PetriNetUnfolderBase]: 13218/23622 cut-off events. [2023-08-03 21:57:50,066 INFO L125 PetriNetUnfolderBase]: For 193000/193373 co-relation queries the response was YES. [2023-08-03 21:57:50,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119676 conditions, 23622 events. 13218/23622 cut-off events. For 193000/193373 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 185767 event pairs, 1259 based on Foata normal form. 411/23891 useless extension candidates. Maximal degree in co-relation 118514. Up to 5771 conditions per place. [2023-08-03 21:57:50,298 INFO L140 encePairwiseOnDemand]: 200/217 looper letters, 629 selfloop transitions, 714 changer transitions 23/1410 dead transitions. [2023-08-03 21:57:50,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1410 transitions, 20984 flow [2023-08-03 21:57:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-03 21:57:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-03 21:57:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2068 transitions. [2023-08-03 21:57:50,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43317972350230416 [2023-08-03 21:57:50,303 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2068 transitions. [2023-08-03 21:57:50,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2068 transitions. [2023-08-03 21:57:50,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:57:50,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2068 transitions. [2023-08-03 21:57:50,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.0) internal successors, (2068), 22 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states 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 21:57:50,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states 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 21:57:50,315 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states 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 21:57:50,315 INFO L175 Difference]: Start difference. First operand has 196 places, 885 transitions, 12826 flow. Second operand 22 states and 2068 transitions. [2023-08-03 21:57:50,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1410 transitions, 20984 flow [2023-08-03 21:57:51,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1410 transitions, 20820 flow, removed 82 selfloop flow, removed 0 redundant places. [2023-08-03 21:57:51,460 INFO L231 Difference]: Finished difference. Result has 229 places, 1028 transitions, 17784 flow [2023-08-03 21:57:51,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=12692, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=885, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=577, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=17784, PETRI_PLACES=229, PETRI_TRANSITIONS=1028} [2023-08-03 21:57:51,462 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 179 predicate places. [2023-08-03 21:57:51,462 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 1028 transitions, 17784 flow [2023-08-03 21:57:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 21:57:51,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:57:51,463 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-03 21:57:51,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 21:57:51,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:57:51,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:57:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2005577367, now seen corresponding path program 3 times [2023-08-03 21:57:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:57:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202010275] [2023-08-03 21:57:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:57:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:57:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:57:51,734 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 21:57:51,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:57:51,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202010275] [2023-08-03 21:57:51,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202010275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:57:51,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:57:51,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 21:57:51,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552384013] [2023-08-03 21:57:51,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:57:51,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 21:57:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:57:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 21:57:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-03 21:57:51,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 217 [2023-08-03 21:57:51,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 1028 transitions, 17784 flow. Second operand has 10 states, 10 states have (on average 83.8) internal successors, (838), 10 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 21:57:51,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:57:51,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 217 [2023-08-03 21:57:51,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:57:59,570 INFO L124 PetriNetUnfolderBase]: 15568/27882 cut-off events. [2023-08-03 21:57:59,570 INFO L125 PetriNetUnfolderBase]: For 322539/323027 co-relation queries the response was YES. [2023-08-03 21:57:59,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158926 conditions, 27882 events. 15568/27882 cut-off events. For 322539/323027 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 224835 event pairs, 1410 based on Foata normal form. 486/28231 useless extension candidates. Maximal degree in co-relation 156787. Up to 6774 conditions per place. [2023-08-03 21:58:00,079 INFO L140 encePairwiseOnDemand]: 198/217 looper letters, 664 selfloop transitions, 1028 changer transitions 24/1760 dead transitions. [2023-08-03 21:58:00,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1760 transitions, 30849 flow [2023-08-03 21:58:00,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-03 21:58:00,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-03 21:58:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2834 transitions. [2023-08-03 21:58:00,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42128734948714136 [2023-08-03 21:58:00,085 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2834 transitions. [2023-08-03 21:58:00,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2834 transitions. [2023-08-03 21:58:00,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:58:00,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2834 transitions. [2023-08-03 21:58:00,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 91.41935483870968) internal successors, (2834), 31 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states 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 21:58:00,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 217.0) internal successors, (6944), 32 states have internal predecessors, (6944), 0 states have call successors, (0), 0 states 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 21:58:00,100 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 217.0) internal successors, (6944), 32 states have internal predecessors, (6944), 0 states have call successors, (0), 0 states 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 21:58:00,100 INFO L175 Difference]: Start difference. First operand has 229 places, 1028 transitions, 17784 flow. Second operand 31 states and 2834 transitions. [2023-08-03 21:58:00,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1760 transitions, 30849 flow [2023-08-03 21:58:02,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1760 transitions, 30562 flow, removed 111 selfloop flow, removed 1 redundant places. [2023-08-03 21:58:02,259 INFO L231 Difference]: Finished difference. Result has 275 places, 1377 transitions, 27851 flow [2023-08-03 21:58:02,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=17641, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1028, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=684, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=27851, PETRI_PLACES=275, PETRI_TRANSITIONS=1377} [2023-08-03 21:58:02,260 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 225 predicate places. [2023-08-03 21:58:02,260 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 1377 transitions, 27851 flow [2023-08-03 21:58:02,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.8) internal successors, (838), 10 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 21:58:02,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:58:02,261 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] [2023-08-03 21:58:02,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 21:58:02,261 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:58:02,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:58:02,262 INFO L85 PathProgramCache]: Analyzing trace with hash -650413111, now seen corresponding path program 1 times [2023-08-03 21:58:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:58:02,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902116218] [2023-08-03 21:58:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:58:02,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:58:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:58:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:58:02,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:58:02,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902116218] [2023-08-03 21:58:02,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902116218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:58:02,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544770453] [2023-08-03 21:58:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:58:02,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:58:02,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:58:02,559 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 21:58:02,565 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 21:58:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:58:02,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-03 21:58:02,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:58:02,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 21:58:02,793 INFO L322 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-03 21:58:02,794 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-08-03 21:58:02,830 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:58:02,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 23 [2023-08-03 21:58:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:58:02,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:58:03,077 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:58:03,077 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-03 21:58:03,085 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:58:03,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-03 21:58:03,109 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 92 [2023-08-03 21:58:03,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 21:58:03,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2023-08-03 21:58:03,144 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 21:58:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:58:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544770453] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:58:03,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:58:03,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-08-03 21:58:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295634341] [2023-08-03 21:58:03,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:58:03,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-03 21:58:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:58:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-03 21:58:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=313, Unknown=4, NotChecked=0, Total=380 [2023-08-03 21:58:03,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 217 [2023-08-03 21:58:03,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 1377 transitions, 27851 flow. Second operand has 20 states, 20 states have (on average 70.15) internal successors, (1403), 20 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states 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 21:58:03,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:58:03,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 217 [2023-08-03 21:58:03,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:58:37,105 INFO L124 PetriNetUnfolderBase]: 52365/85994 cut-off events. [2023-08-03 21:58:37,105 INFO L125 PetriNetUnfolderBase]: For 1182580/1182580 co-relation queries the response was YES. [2023-08-03 21:58:38,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518099 conditions, 85994 events. 52365/85994 cut-off events. For 1182580/1182580 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 710012 event pairs, 6731 based on Foata normal form. 894/86887 useless extension candidates. Maximal degree in co-relation 516302. Up to 15886 conditions per place. [2023-08-03 21:58:38,988 INFO L140 encePairwiseOnDemand]: 196/217 looper letters, 1605 selfloop transitions, 2537 changer transitions 31/4178 dead transitions. [2023-08-03 21:58:38,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 4178 transitions, 82525 flow [2023-08-03 21:58:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-08-03 21:58:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-08-03 21:58:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 6620 transitions. [2023-08-03 21:58:38,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720355175901989 [2023-08-03 21:58:38,998 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 6620 transitions. [2023-08-03 21:58:38,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 6620 transitions. [2023-08-03 21:58:39,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:58:39,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 6620 transitions. [2023-08-03 21:58:39,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 80.73170731707317) internal successors, (6620), 82 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states 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 21:58:39,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 217.0) internal successors, (18011), 83 states have internal predecessors, (18011), 0 states have call successors, (0), 0 states 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 21:58:39,036 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 217.0) internal successors, (18011), 83 states have internal predecessors, (18011), 0 states have call successors, (0), 0 states 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 21:58:39,036 INFO L175 Difference]: Start difference. First operand has 275 places, 1377 transitions, 27851 flow. Second operand 82 states and 6620 transitions. [2023-08-03 21:58:39,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 4178 transitions, 82525 flow [2023-08-03 21:58:54,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 4178 transitions, 82014 flow, removed 226 selfloop flow, removed 2 redundant places. [2023-08-03 21:58:54,783 INFO L231 Difference]: Finished difference. Result has 402 places, 3001 transitions, 71377 flow [2023-08-03 21:58:54,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=27482, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=71377, PETRI_PLACES=402, PETRI_TRANSITIONS=3001} [2023-08-03 21:58:54,784 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 352 predicate places. [2023-08-03 21:58:54,784 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 3001 transitions, 71377 flow [2023-08-03 21:58:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 70.15) internal successors, (1403), 20 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states 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 21:58:54,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:58:54,785 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] [2023-08-03 21:58:54,789 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 21:58:54,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:58:54,986 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:58:54,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:58:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash -845530508, now seen corresponding path program 1 times [2023-08-03 21:58:54,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:58:54,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057944889] [2023-08-03 21:58:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:58:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:58:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:58:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 21:58:55,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:58:55,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057944889] [2023-08-03 21:58:55,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057944889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:58:55,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:58:55,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 21:58:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575893303] [2023-08-03 21:58:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:58:55,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 21:58:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:58:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 21:58:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-03 21:58:55,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 217 [2023-08-03 21:58:55,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 3001 transitions, 71377 flow. Second operand has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states 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 21:58:55,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:58:55,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 217 [2023-08-03 21:58:55,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:59:28,893 INFO L124 PetriNetUnfolderBase]: 28436/54116 cut-off events. [2023-08-03 21:59:28,893 INFO L125 PetriNetUnfolderBase]: For 1271619/1273575 co-relation queries the response was YES. [2023-08-03 21:59:30,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396248 conditions, 54116 events. 28436/54116 cut-off events. For 1271619/1273575 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 506227 event pairs, 2738 based on Foata normal form. 1448/55034 useless extension candidates. Maximal degree in co-relation 395831. Up to 13713 conditions per place. [2023-08-03 21:59:30,923 INFO L140 encePairwiseOnDemand]: 201/217 looper letters, 1311 selfloop transitions, 2146 changer transitions 17/3626 dead transitions. [2023-08-03 21:59:30,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 3626 transitions, 88126 flow [2023-08-03 21:59:30,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 21:59:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 21:59:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1941 transitions. [2023-08-03 21:59:30,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44723502304147467 [2023-08-03 21:59:30,926 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1941 transitions. [2023-08-03 21:59:30,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1941 transitions. [2023-08-03 21:59:30,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:59:30,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1941 transitions. [2023-08-03 21:59:30,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 97.05) internal successors, (1941), 20 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states 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 21:59:30,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 217.0) internal successors, (4557), 21 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states 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 21:59:30,934 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 217.0) internal successors, (4557), 21 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states 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 21:59:30,934 INFO L175 Difference]: Start difference. First operand has 402 places, 3001 transitions, 71377 flow. Second operand 20 states and 1941 transitions. [2023-08-03 21:59:30,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 3626 transitions, 88126 flow [2023-08-03 21:59:45,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 3626 transitions, 86358 flow, removed 884 selfloop flow, removed 0 redundant places. [2023-08-03 21:59:45,911 INFO L231 Difference]: Finished difference. Result has 430 places, 3083 transitions, 80525 flow [2023-08-03 21:59:45,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=70065, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2068, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=905, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=80525, PETRI_PLACES=430, PETRI_TRANSITIONS=3083} [2023-08-03 21:59:45,914 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 380 predicate places. [2023-08-03 21:59:45,914 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 3083 transitions, 80525 flow [2023-08-03 21:59:45,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states 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 21:59:45,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:59:45,915 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] [2023-08-03 21:59:45,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 21:59:45,915 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:59:45,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:59:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1747511080, now seen corresponding path program 2 times [2023-08-03 21:59:45,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:59:45,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262432329] [2023-08-03 21:59:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:59:45,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:59:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:59:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 21:59:46,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:59:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262432329] [2023-08-03 21:59:46,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262432329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:59:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294541525] [2023-08-03 21:59:46,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 21:59:46,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:59:46,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:59:46,143 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 21:59:46,150 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 21:59:46,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 21:59:46,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:59:46,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-03 21:59:46,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:59:46,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 21:59:46,367 INFO L322 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-03 21:59:46,368 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-08-03 21:59:46,401 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:59:46,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 23 [2023-08-03 21:59:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 21:59:46,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:59:46,585 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:59:46,585 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-03 21:59:46,592 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:59:46,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-03 21:59:46,606 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43 [2023-08-03 21:59:46,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-08-03 21:59:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 21:59:46,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294541525] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:59:46,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:59:46,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-03 21:59:46,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431692508] [2023-08-03 21:59:46,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:59:46,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-03 21:59:46,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:59:46,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-03 21:59:46,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=270, Unknown=3, NotChecked=0, Total=342 [2023-08-03 21:59:46,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 217 [2023-08-03 21:59:46,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 3083 transitions, 80525 flow. Second operand has 19 states, 19 states have (on average 76.0) internal successors, (1444), 19 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 21:59:46,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:59:46,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 217 [2023-08-03 21:59:46,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:01:16,294 INFO L124 PetriNetUnfolderBase]: 66696/112817 cut-off events. [2023-08-03 22:01:16,294 INFO L125 PetriNetUnfolderBase]: For 2841877/2842034 co-relation queries the response was YES. [2023-08-03 22:01:19,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829803 conditions, 112817 events. 66696/112817 cut-off events. For 2841877/2842034 co-relation queries the response was YES. Maximal size of possible extension queue 2254. Compared 990436 event pairs, 5540 based on Foata normal form. 1370/114130 useless extension candidates. Maximal degree in co-relation 827872. Up to 22790 conditions per place. [2023-08-03 22:01:20,394 INFO L140 encePairwiseOnDemand]: 201/217 looper letters, 2408 selfloop transitions, 3414 changer transitions 85/5919 dead transitions. [2023-08-03 22:01:20,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 5919 transitions, 144713 flow [2023-08-03 22:01:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-08-03 22:01:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-08-03 22:01:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 6178 transitions. [2023-08-03 22:01:20,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40098656454858184 [2023-08-03 22:01:20,401 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 6178 transitions. [2023-08-03 22:01:20,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 6178 transitions. [2023-08-03 22:01:20,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:01:20,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 6178 transitions. [2023-08-03 22:01:20,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 87.01408450704226) internal successors, (6178), 71 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states 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 22:01:20,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 217.0) internal successors, (15624), 72 states have internal predecessors, (15624), 0 states have call successors, (0), 0 states 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 22:01:20,423 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 217.0) internal successors, (15624), 72 states have internal predecessors, (15624), 0 states have call successors, (0), 0 states 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 22:01:20,424 INFO L175 Difference]: Start difference. First operand has 430 places, 3083 transitions, 80525 flow. Second operand 71 states and 6178 transitions. [2023-08-03 22:01:20,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 5919 transitions, 144713 flow [2023-08-03 22:02:10,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 5919 transitions, 144497 flow, removed 87 selfloop flow, removed 3 redundant places. [2023-08-03 22:02:10,925 INFO L231 Difference]: Finished difference. Result has 530 places, 4258 transitions, 126690 flow [2023-08-03 22:02:10,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=80130, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=126690, PETRI_PLACES=530, PETRI_TRANSITIONS=4258} [2023-08-03 22:02:10,928 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 480 predicate places. [2023-08-03 22:02:10,928 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 4258 transitions, 126690 flow [2023-08-03 22:02:10,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 76.0) internal successors, (1444), 19 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 22:02:10,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:10,929 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] [2023-08-03 22:02:10,937 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 22:02:11,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 22:02:11,134 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:02:11,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 417108987, now seen corresponding path program 2 times [2023-08-03 22:02:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:11,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716320622] [2023-08-03 22:02:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:11,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:11,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716320622] [2023-08-03 22:02:11,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716320622] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:02:11,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492588336] [2023-08-03 22:02:11,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 22:02:11,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:11,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:02:11,451 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 22:02:11,453 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 22:02:11,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 22:02:11,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 22:02:11,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-03 22:02:11,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:02:11,556 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-03 22:02:11,581 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 22:02:11,581 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 11 treesize of output 11 [2023-08-03 22:02:11,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 22:02:11,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 22:02:11,767 INFO L322 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-03 22:02:11,767 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-08-03 22:02:11,802 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 22:02:11,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 23 [2023-08-03 22:02:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:11,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:02:11,876 WARN L839 $PredicateComparison]: unable to prove that (and (or (< 64 c_~next_alloc_idx~0) (forall ((|v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| Int)) (not (= (select (select (store |c_#memory_int| |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| (store (select |c_#memory_int| |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11|) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.offset| c_~next_alloc_idx~0)) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0)))) (or (forall ((|v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| Int) (v_ArrVal_367 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_int| |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| v_ArrVal_367) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|)))) (<= c_~next_alloc_idx~0 64))) is different from false [2023-08-03 22:02:11,927 WARN L839 $PredicateComparison]: unable to prove that (and (or (< 64 c_~next_alloc_idx~0) (forall ((|v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| Int)) (not (= (select (select (store |c_#memory_int| |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| (store (select |c_#memory_int| |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11|) 0 c_~next_alloc_idx~0)) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0)))) (or (forall ((|v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| Int) (v_ArrVal_367 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_int| |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| v_ArrVal_367) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|)))) (<= c_~next_alloc_idx~0 64))) is different from false [2023-08-03 22:02:12,003 WARN L839 $PredicateComparison]: unable to prove that (and (or (forall ((v_ArrVal_364 (Array Int Int)) (|v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| Int) (v_ArrVal_367 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_364) |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| v_ArrVal_367) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))) (<= c_~next_alloc_idx~0 64)) (or (< 64 c_~next_alloc_idx~0) (forall ((v_ArrVal_364 (Array Int Int)) (|v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_364))) (store .cse0 |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11| (store (select .cse0 |v_thr1Thread2of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_11|) 0 c_~next_alloc_idx~0))) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))))) is different from false [2023-08-03 22:02:12,139 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 22:02:12,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-03 22:02:12,151 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 22:02:12,152 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-03 22:02:12,208 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 22:02:12,208 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 505 treesize of output 491 [2023-08-03 22:02:12,248 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 278 [2023-08-03 22:02:12,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 276 [2023-08-03 22:02:12,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 272 [2023-08-03 22:02:12,278 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 272 treesize of output 270 [2023-08-03 22:02:12,288 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 266 [2023-08-03 22:02:12,297 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 264 [2023-08-03 22:02:12,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2023-08-03 22:02:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-08-03 22:02:12,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492588336] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:02:12,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:02:12,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-08-03 22:02:12,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329182036] [2023-08-03 22:02:12,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:02:12,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-03 22:02:12,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:12,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-03 22:02:12,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=330, Unknown=3, NotChecked=114, Total=506 [2023-08-03 22:02:12,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 217 [2023-08-03 22:02:12,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 4258 transitions, 126690 flow. Second operand has 23 states, 23 states have (on average 67.8695652173913) internal successors, (1561), 23 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states 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 22:02:12,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:12,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 217 [2023-08-03 22:02:12,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:30,778 INFO L124 PetriNetUnfolderBase]: 89078/148029 cut-off events. [2023-08-03 22:05:30,779 INFO L125 PetriNetUnfolderBase]: For 4750229/4750229 co-relation queries the response was YES. [2023-08-03 22:05:36,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197835 conditions, 148029 events. 89078/148029 cut-off events. For 4750229/4750229 co-relation queries the response was YES. Maximal size of possible extension queue 2675. Compared 1313862 event pairs, 11277 based on Foata normal form. 508/148537 useless extension candidates. Maximal degree in co-relation 1197363. Up to 27918 conditions per place. [2023-08-03 22:05:37,273 INFO L140 encePairwiseOnDemand]: 183/217 looper letters, 2474 selfloop transitions, 4646 changer transitions 12/7137 dead transitions. [2023-08-03 22:05:37,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 7137 transitions, 207074 flow [2023-08-03 22:05:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-08-03 22:05:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2023-08-03 22:05:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 7292 transitions. [2023-08-03 22:05:37,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3537230172204705 [2023-08-03 22:05:37,283 INFO L72 ComplementDD]: Start complementDD. Operand 95 states and 7292 transitions. [2023-08-03 22:05:37,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 7292 transitions. [2023-08-03 22:05:37,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:37,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 95 states and 7292 transitions. [2023-08-03 22:05:37,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 96 states, 95 states have (on average 76.7578947368421) internal successors, (7292), 95 states have internal predecessors, (7292), 0 states have call successors, (0), 0 states 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 22:05:37,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 96 states, 96 states have (on average 217.0) internal successors, (20832), 96 states have internal predecessors, (20832), 0 states have call successors, (0), 0 states 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 22:05:37,316 INFO L81 ComplementDD]: Finished complementDD. Result has 96 states, 96 states have (on average 217.0) internal successors, (20832), 96 states have internal predecessors, (20832), 0 states have call successors, (0), 0 states 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 22:05:37,316 INFO L175 Difference]: Start difference. First operand has 530 places, 4258 transitions, 126690 flow. Second operand 95 states and 7292 transitions. [2023-08-03 22:05:37,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 7137 transitions, 207074 flow [2023-08-03 22:07:48,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 7137 transitions, 202576 flow, removed 2088 selfloop flow, removed 4 redundant places. [2023-08-03 22:07:48,401 INFO L231 Difference]: Finished difference. Result has 674 places, 5679 transitions, 180474 flow [2023-08-03 22:07:48,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=123241, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=95, PETRI_FLOW=180474, PETRI_PLACES=674, PETRI_TRANSITIONS=5679} [2023-08-03 22:07:48,406 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 624 predicate places. [2023-08-03 22:07:48,406 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 5679 transitions, 180474 flow [2023-08-03 22:07:48,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 67.8695652173913) internal successors, (1561), 23 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states 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 22:07:48,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:07:48,406 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:07:48,414 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 22:07:48,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:07:48,611 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:07:48,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:07:48,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1985703155, now seen corresponding path program 1 times [2023-08-03 22:07:48,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:07:48,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37587117] [2023-08-03 22:07:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:07:48,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:07:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:07:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:07:49,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:07:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37587117] [2023-08-03 22:07:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37587117] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:07:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563254926] [2023-08-03 22:07:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:07:49,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:07:49,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:07:49,134 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 22:07:49,137 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 22:07:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:07:49,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-03 22:07:49,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:07:49,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-03 22:07:49,279 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-03 22:07:49,280 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-03 22:07:49,295 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-03 22:07:49,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-03 22:07:49,385 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-03 22:07:49,386 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-03 22:07:49,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 22:07:49,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 22:07:49,567 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-03 22:07:49,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-03 22:07:49,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 22:07:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:07:49,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:07:49,706 WARN L839 $PredicateComparison]: unable to prove that (and (or (forall ((v_ArrVal_438 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base| v_ArrVal_438) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))) (<= c_~next_alloc_idx~0 64)) (or (forall ((v_ArrVal_439 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base| v_ArrVal_439) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))) (< 64 c_~next_alloc_idx~0))) is different from false [2023-08-03 22:07:50,396 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 22:07:50,397 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 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 33 treesize of output 49 [2023-08-03 22:07:50,461 INFO L322 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2023-08-03 22:07:50,462 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 293 treesize of output 310 [2023-08-03 22:07:50,518 INFO L322 Elim1Store]: treesize reduction 55, result has 45.5 percent of original size [2023-08-03 22:07:50,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 338 treesize of output 376 [2023-08-03 22:07:50,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 238 treesize of output 236 [2023-08-03 22:07:50,567 INFO L322 Elim1Store]: treesize reduction 41, result has 16.3 percent of original size [2023-08-03 22:07:50,568 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 322 treesize of output 305 [2023-08-03 22:07:50,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 262 [2023-08-03 22:07:50,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 258 [2023-08-03 22:07:50,638 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 22:07:50,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 389 treesize of output 389 [2023-08-03 22:07:50,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 296 [2023-08-03 22:07:50,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 292 [2023-08-03 22:07:50,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 290 [2023-08-03 22:07:50,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 288 [2023-08-03 22:07:50,711 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 284 [2023-08-03 22:07:50,721 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 282 [2023-08-03 22:07:50,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 278 [2023-08-03 22:07:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 1 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-03 22:07:51,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563254926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:07:51,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:07:51,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2023-08-03 22:07:51,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239565021] [2023-08-03 22:07:51,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:07:51,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-03 22:07:51,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:07:51,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-03 22:07:51,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=795, Unknown=10, NotChecked=58, Total=992 [2023-08-03 22:07:51,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 217 [2023-08-03 22:07:51,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 5679 transitions, 180474 flow. Second operand has 32 states, 32 states have (on average 68.125) internal successors, (2180), 32 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states 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 22:07:51,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:07:51,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 217 [2023-08-03 22:07:51,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:08:52,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-08-03 22:09:59,534 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 22:09:59,534 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 22:10:00,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 22:10:00,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-03 22:10:02,684 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 22:10:02,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 22:10:02,685 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-03 22:10:02,685 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 22:10:02,685 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 22:10:02,685 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1] [2023-08-03 22:10:02,685 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT (2/2) [2023-08-03 22:10:02,687 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:10:02,687 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:10:02,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:10:02 BasicIcfg [2023-08-03 22:10:02,690 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:10:02,690 INFO L158 Benchmark]: Toolchain (without parser) took 765324.72ms. Allocated memory was 480.2MB in the beginning and 13.6GB in the end (delta: 13.1GB). Free memory was 430.1MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-08-03 22:10:02,691 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 343.9MB. Free memory was 295.7MB in the beginning and 295.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:10:02,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.32ms. Allocated memory is still 480.2MB. Free memory was 429.8MB in the beginning and 410.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 22:10:02,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.96ms. Allocated memory is still 480.2MB. Free memory was 410.3MB in the beginning and 408.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:10:02,691 INFO L158 Benchmark]: Boogie Preprocessor took 20.23ms. Allocated memory is still 480.2MB. Free memory was 408.2MB in the beginning and 406.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:10:02,691 INFO L158 Benchmark]: RCFGBuilder took 449.45ms. Allocated memory is still 480.2MB. Free memory was 406.5MB in the beginning and 438.4MB in the end (delta: -31.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.0GB. [2023-08-03 22:10:02,692 INFO L158 Benchmark]: TraceAbstraction took 764336.81ms. Allocated memory was 480.2MB in the beginning and 13.6GB in the end (delta: 13.1GB). Free memory was 437.6MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-08-03 22:10:02,693 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 343.9MB. Free memory was 295.7MB in the beginning and 295.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 477.32ms. Allocated memory is still 480.2MB. Free memory was 429.8MB in the beginning and 410.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.96ms. Allocated memory is still 480.2MB. Free memory was 410.3MB in the beginning and 408.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.23ms. Allocated memory is still 480.2MB. Free memory was 408.2MB in the beginning and 406.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 449.45ms. Allocated memory is still 480.2MB. Free memory was 406.5MB in the beginning and 438.4MB in the end (delta: -31.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.0GB. * TraceAbstraction took 764336.81ms. Allocated memory was 480.2MB in the beginning and 13.6GB in the end (delta: 13.1GB). Free memory was 437.6MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 74 PlacesBefore, 21 PlacesAfterwards, 77 TransitionsBefore, 20 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1834 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1328, independent: 1230, independent conditional: 0, independent unconditional: 1230, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 753, independent: 731, independent conditional: 0, independent unconditional: 731, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1328, independent: 499, independent conditional: 0, independent unconditional: 499, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 753, unknown conditional: 0, unknown unconditional: 753] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 117 PlacesBefore, 49 PlacesAfterwards, 123 TransitionsBefore, 48 TransitionsAfterwards, 7020 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 94 TotalNumberOfCompositions, 16748 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7883, independent: 7536, independent conditional: 0, independent unconditional: 7536, dependent: 347, dependent conditional: 0, dependent unconditional: 347, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3715, independent: 3651, independent conditional: 0, independent unconditional: 3651, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7883, independent: 3885, independent conditional: 0, independent unconditional: 3885, dependent: 283, dependent conditional: 0, dependent unconditional: 283, unknown: 3715, unknown conditional: 0, unknown unconditional: 3715] , Statistics on independence cache: Total cache size (in pairs): 381, Positive cache size: 351, Positive conditional cache size: 0, Positive unconditional cache size: 351, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 117 PlacesBefore, 50 PlacesAfterwards, 123 TransitionsBefore, 50 TransitionsAfterwards, 7020 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 94 TotalNumberOfCompositions, 17274 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8548, independent: 8190, independent conditional: 0, independent unconditional: 8190, dependent: 358, dependent conditional: 0, dependent unconditional: 358, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3768, independent: 3701, independent conditional: 0, independent unconditional: 3701, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8548, independent: 4489, independent conditional: 0, independent unconditional: 4489, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 3768, unknown conditional: 0, unknown unconditional: 3768] , Statistics on independence cache: Total cache size (in pairs): 411, Positive cache size: 379, Positive conditional cache size: 0, Positive unconditional cache size: 379, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 154 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 154 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 760.2s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 749.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 203 mSolverCounterUnknown, 6408 SdHoareTripleChecker+Valid, 24.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6132 mSDsluCounter, 4120 SdHoareTripleChecker+Invalid, 21.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5405 IncrementalHoareTripleChecker+Unchecked, 3912 mSDsCounter, 668 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24582 IncrementalHoareTripleChecker+Invalid, 30858 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 668 mSolverCounterUnsat, 208 mSDtfsCounter, 24582 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 876 GetRequests, 285 SyntacticMatches, 19 SemanticMatches, 572 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 17676 ImplicationChecksByTransitivity, 25.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180474occurred in iteration=12, InterpolantAutomatonStates: 422, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 523 NumberOfCodeBlocks, 523 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 653 ConstructedInterpolants, 102 QuantifiedInterpolants, 9582 SizeOfPredicates, 68 NumberOfNonLiveVariables, 1185 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 42/134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown