/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_71-funloop_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:18:53,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:18:53,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:18:53,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:18:53,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:18:53,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:18:53,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:18:53,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:18:53,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:18:53,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:18:53,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:18:53,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:18:53,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:18:53,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:18:53,787 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:18:53,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:18:53,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:18:53,787 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:18:53,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:18:53,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:18:53,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:18:53,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:18:53,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:18:53,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:18:53,789 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:18:53,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:18:53,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:18:53,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:18:53,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:18:53,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:18:53,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:18:53,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:18:53,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:18:53,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:18:53,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:18:53,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:18:53,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:18:53,792 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:18:53,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:18:53,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:18:53,793 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:18:53,793 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:18:54,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:18:54,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:18:54,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:18:54,056 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:18:54,057 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:18:54,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_71-funloop_racing_bound2.i [2023-08-03 15:18:55,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:18:55,433 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:18:55,433 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_71-funloop_racing_bound2.i [2023-08-03 15:18:55,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9869c84cb/42bac07d984d43a1a5734fbfc663bc78/FLAGade6ea41e [2023-08-03 15:18:55,466 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9869c84cb/42bac07d984d43a1a5734fbfc663bc78 [2023-08-03 15:18:55,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:18:55,470 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:18:55,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:18:55,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:18:55,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:18:55,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:18:55" (1/1) ... [2023-08-03 15:18:55,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504d0559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:55, skipping insertion in model container [2023-08-03 15:18:55,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:18:55" (1/1) ... [2023-08-03 15:18:55,516 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:18:55,860 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/goblint-regression_28-race_reach_71-funloop_racing_bound2.i[41323,41336] [2023-08-03 15:18:55,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:18:55,913 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:18:55,939 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:18:55,941 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:18:55,947 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-03 15:18:55,961 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/goblint-regression_28-race_reach_71-funloop_racing_bound2.i[41323,41336] [2023-08-03 15:18:55,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:18:56,062 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:18:56,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56 WrapperNode [2023-08-03 15:18:56,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:18:56,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:18:56,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:18:56,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:18:56,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,115 INFO L138 Inliner]: procedures = 271, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 247 [2023-08-03 15:18:56,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:18:56,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:18:56,117 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:18:56,117 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:18:56,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:18:56,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:18:56,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:18:56,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:18:56,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (1/1) ... [2023-08-03 15:18:56,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:18:56,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:56,184 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 15:18:56,192 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 15:18:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:18:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:18:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:18:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:18:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:18:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:18:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:18:56,211 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:18:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:18:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:18:56,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:18:56,213 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 15:18:56,327 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:18:56,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:18:56,585 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:18:56,592 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:18:56,592 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-03 15:18:56,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:18:56 BoogieIcfgContainer [2023-08-03 15:18:56,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:18:56,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:18:56,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:18:56,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:18:56,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:18:55" (1/3) ... [2023-08-03 15:18:56,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74659027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:18:56, skipping insertion in model container [2023-08-03 15:18:56,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:56" (2/3) ... [2023-08-03 15:18:56,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74659027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:18:56, skipping insertion in model container [2023-08-03 15:18:56,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:18:56" (3/3) ... [2023-08-03 15:18:56,601 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_71-funloop_racing_bound2.i [2023-08-03 15:18:56,608 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:18:56,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:18:56,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 15:18:56,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:18:56,696 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:18:56,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 243 transitions, 494 flow [2023-08-03 15:18:56,815 INFO L124 PetriNetUnfolderBase]: 73/375 cut-off events. [2023-08-03 15:18:56,815 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:18:56,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 375 events. 73/375 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1649 event pairs, 0 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-08-03 15:18:56,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 243 transitions, 494 flow [2023-08-03 15:18:56,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 238 transitions, 481 flow [2023-08-03 15:18:56,846 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:18:56,866 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 238 transitions, 481 flow [2023-08-03 15:18:56,868 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 238 transitions, 481 flow [2023-08-03 15:18:56,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 238 transitions, 481 flow [2023-08-03 15:18:56,933 INFO L124 PetriNetUnfolderBase]: 72/370 cut-off events. [2023-08-03 15:18:56,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:56,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 370 events. 72/370 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1605 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-08-03 15:18:56,946 INFO L119 LiptonReduction]: Number of co-enabled transitions 19044 [2023-08-03 15:18:59,599 INFO L134 LiptonReduction]: Checked pairs total: 28154 [2023-08-03 15:18:59,599 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-03 15:18:59,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:18:59,617 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;@4bc8e853, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:18:59,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 15:18:59,623 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:18:59,624 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2023-08-03 15:18:59,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:59,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:59,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:59,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:18:59,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1093547417, now seen corresponding path program 1 times [2023-08-03 15:18:59,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:59,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154982685] [2023-08-03 15:18:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:59,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:59,835 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 15:18:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154982685] [2023-08-03 15:18:59,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154982685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:59,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:59,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:18:59,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845348606] [2023-08-03 15:18:59,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:59,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:18:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:59,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:18:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:18:59,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 424 [2023-08-03 15:18:59,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 96 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 15:18:59,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:59,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 424 [2023-08-03 15:18:59,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:00,108 INFO L124 PetriNetUnfolderBase]: 596/1256 cut-off events. [2023-08-03 15:19:00,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:19:00,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1256 events. 596/1256 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7130 event pairs, 480 based on Foata normal form. 217/1239 useless extension candidates. Maximal degree in co-relation 2266. Up to 1093 conditions per place. [2023-08-03 15:19:00,117 INFO L140 encePairwiseOnDemand]: 391/424 looper letters, 52 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-03 15:19:00,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 247 flow [2023-08-03 15:19:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:19:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:19:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-03 15:19:00,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290880503144654 [2023-08-03 15:19:00,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-03 15:19:00,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-03 15:19:00,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:00,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-03 15:19:00,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 15:19:00,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 15:19:00,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 15:19:00,162 INFO L175 Difference]: Start difference. First operand has 63 places, 96 transitions, 197 flow. Second operand 3 states and 673 transitions. [2023-08-03 15:19:00,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 247 flow [2023-08-03 15:19:00,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 247 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:19:00,169 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 149 flow [2023-08-03 15:19:00,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-03 15:19:00,175 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-08-03 15:19:00,176 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 149 flow [2023-08-03 15:19:00,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 15:19:00,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:00,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:19:00,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:19:00,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:19:00,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:00,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1919799580, now seen corresponding path program 1 times [2023-08-03 15:19:00,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:00,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663137259] [2023-08-03 15:19:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:00,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:19:00,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663137259] [2023-08-03 15:19:00,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663137259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:19:00,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:19:00,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:19:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284073396] [2023-08-03 15:19:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:19:00,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:19:00,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:19:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:19:00,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 424 [2023-08-03 15:19:00,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 15:19:00,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:00,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 424 [2023-08-03 15:19:00,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:00,466 INFO L124 PetriNetUnfolderBase]: 563/1210 cut-off events. [2023-08-03 15:19:00,466 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:19:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 1210 events. 563/1210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7469 event pairs, 0 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 2288. Up to 1044 conditions per place. [2023-08-03 15:19:00,475 INFO L140 encePairwiseOnDemand]: 421/424 looper letters, 69 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-03 15:19:00,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 325 flow [2023-08-03 15:19:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:19:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:19:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-03 15:19:00,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180817610062893 [2023-08-03 15:19:00,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-03 15:19:00,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-03 15:19:00,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:00,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-03 15:19:00,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states 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 15:19:00,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 15:19:00,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 15:19:00,484 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 149 flow. Second operand 3 states and 659 transitions. [2023-08-03 15:19:00,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 325 flow [2023-08-03 15:19:00,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 321 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 15:19:00,488 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 153 flow [2023-08-03 15:19:00,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2023-08-03 15:19:00,492 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2023-08-03 15:19:00,492 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 153 flow [2023-08-03 15:19:00,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 15:19:00,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:00,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 15:19:00,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:19:00,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:19:00,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:00,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1941665266, now seen corresponding path program 1 times [2023-08-03 15:19:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050864482] [2023-08-03 15:19:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:00,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:19:00,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050864482] [2023-08-03 15:19:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050864482] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:19:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547754519] [2023-08-03 15:19:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:00,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:00,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:19:00,560 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 15:19:00,578 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 15:19:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:00,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:19:00,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:19:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:19:00,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:19:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:19:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547754519] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:19:00,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:19:00,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-03 15:19:00,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511381122] [2023-08-03 15:19:00,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:19:00,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 15:19:00,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:00,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 15:19:00,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-03 15:19:00,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 424 [2023-08-03 15:19:00,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 153 flow. Second operand has 7 states, 7 states have (on average 196.57142857142858) internal successors, (1376), 7 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:19:00,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:00,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 424 [2023-08-03 15:19:00,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:00,944 INFO L124 PetriNetUnfolderBase]: 593/1232 cut-off events. [2023-08-03 15:19:00,944 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 15:19:00,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 1232 events. 593/1232 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6946 event pairs, 480 based on Foata normal form. 3/1026 useless extension candidates. Maximal degree in co-relation 2334. Up to 1062 conditions per place. [2023-08-03 15:19:00,951 INFO L140 encePairwiseOnDemand]: 421/424 looper letters, 52 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2023-08-03 15:19:00,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 279 flow [2023-08-03 15:19:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:19:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:19:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1230 transitions. [2023-08-03 15:19:00,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834905660377358 [2023-08-03 15:19:00,954 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1230 transitions. [2023-08-03 15:19:00,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1230 transitions. [2023-08-03 15:19:00,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:00,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1230 transitions. [2023-08-03 15:19:00,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states 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 15:19:00,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 424.0) internal successors, (2968), 7 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states 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 15:19:00,964 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 424.0) internal successors, (2968), 7 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states 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 15:19:00,964 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 153 flow. Second operand 6 states and 1230 transitions. [2023-08-03 15:19:00,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 279 flow [2023-08-03 15:19:00,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:19:00,967 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 185 flow [2023-08-03 15:19:00,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-08-03 15:19:00,969 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2023-08-03 15:19:00,969 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 185 flow [2023-08-03 15:19:00,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.57142857142858) internal successors, (1376), 7 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:19:00,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:00,970 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-03 15:19:00,979 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 15:19:01,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:01,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:19:01,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:01,180 INFO L85 PathProgramCache]: Analyzing trace with hash -901385091, now seen corresponding path program 2 times [2023-08-03 15:19:01,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:01,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992903102] [2023-08-03 15:19:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:01,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:19:01,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:01,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992903102] [2023-08-03 15:19:01,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992903102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:19:01,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94742929] [2023-08-03 15:19:01,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 15:19:01,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:01,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:19:01,286 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 15:19:01,288 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 15:19:01,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 15:19:01,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:19:01,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 15:19:01,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:19:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:19:01,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:19:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:19:01,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94742929] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:19:01,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:19:01,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-03 15:19:01,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454600202] [2023-08-03 15:19:01,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:19:01,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 15:19:01,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 15:19:01,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-03 15:19:01,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 424 [2023-08-03 15:19:01,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 185 flow. Second operand has 13 states, 13 states have (on average 196.30769230769232) internal successors, (2552), 13 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 15:19:01,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:01,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 424 [2023-08-03 15:19:01,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:01,669 INFO L124 PetriNetUnfolderBase]: 593/1238 cut-off events. [2023-08-03 15:19:01,670 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-03 15:19:01,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 1238 events. 593/1238 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6949 event pairs, 480 based on Foata normal form. 6/1035 useless extension candidates. Maximal degree in co-relation 2324. Up to 1062 conditions per place. [2023-08-03 15:19:01,677 INFO L140 encePairwiseOnDemand]: 421/424 looper letters, 52 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2023-08-03 15:19:01,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 347 flow [2023-08-03 15:19:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 15:19:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 15:19:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2409 transitions. [2023-08-03 15:19:01,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47346698113207547 [2023-08-03 15:19:01,682 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2409 transitions. [2023-08-03 15:19:01,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2409 transitions. [2023-08-03 15:19:01,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:01,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2409 transitions. [2023-08-03 15:19:01,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 200.75) internal successors, (2409), 12 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states 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 15:19:01,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 424.0) internal successors, (5512), 13 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states 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 15:19:01,699 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 424.0) internal successors, (5512), 13 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states 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 15:19:01,702 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 185 flow. Second operand 12 states and 2409 transitions. [2023-08-03 15:19:01,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 347 flow [2023-08-03 15:19:01,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 76 transitions, 333 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 15:19:01,709 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 255 flow [2023-08-03 15:19:01,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=255, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-08-03 15:19:01,710 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 27 predicate places. [2023-08-03 15:19:01,710 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 255 flow [2023-08-03 15:19:01,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 196.30769230769232) internal successors, (2552), 13 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 15:19:01,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:01,711 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-03 15:19:01,719 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 15:19:01,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 15:19:01,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:19:01,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:01,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2050494557, now seen corresponding path program 3 times [2023-08-03 15:19:01,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:01,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466048695] [2023-08-03 15:19:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:01,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:19:01,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:19:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:19:01,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:19:01,999 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:19:02,000 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 15:19:02,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 15:19:02,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 15:19:02,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 15:19:02,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 15:19:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:19:02,003 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-03 15:19:02,006 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:19:02,006 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:19:02,086 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 15:19:02,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 314 transitions, 646 flow [2023-08-03 15:19:02,145 INFO L124 PetriNetUnfolderBase]: 118/602 cut-off events. [2023-08-03 15:19:02,145 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:19:02,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 602 events. 118/602 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3046 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 377. Up to 12 conditions per place. [2023-08-03 15:19:02,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 314 transitions, 646 flow [2023-08-03 15:19:02,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 314 transitions, 646 flow [2023-08-03 15:19:02,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:19:02,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 314 transitions, 646 flow [2023-08-03 15:19:02,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 314 transitions, 646 flow [2023-08-03 15:19:02,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 314 transitions, 646 flow [2023-08-03 15:19:02,215 INFO L124 PetriNetUnfolderBase]: 118/602 cut-off events. [2023-08-03 15:19:02,215 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:19:02,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 602 events. 118/602 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3046 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 377. Up to 12 conditions per place. [2023-08-03 15:19:02,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 49128 [2023-08-03 15:19:05,302 INFO L134 LiptonReduction]: Checked pairs total: 84800 [2023-08-03 15:19:05,302 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-08-03 15:19:05,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:19:05,305 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;@4bc8e853, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:19:05,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 15:19:05,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:19:05,312 INFO L124 PetriNetUnfolderBase]: 15/44 cut-off events. [2023-08-03 15:19:05,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:19:05,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:05,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:19:05,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:19:05,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1196571689, now seen corresponding path program 1 times [2023-08-03 15:19:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656422013] [2023-08-03 15:19:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:05,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:05,343 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 15:19:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656422013] [2023-08-03 15:19:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656422013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:19:05,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:19:05,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:19:05,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269195527] [2023-08-03 15:19:05,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:19:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:19:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:19:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:19:05,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 551 [2023-08-03 15:19:05,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 134 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 15:19:05,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:05,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 551 [2023-08-03 15:19:05,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:07,533 INFO L124 PetriNetUnfolderBase]: 19933/30665 cut-off events. [2023-08-03 15:19:07,533 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-08-03 15:19:07,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58992 conditions, 30665 events. 19933/30665 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 212621 event pairs, 17166 based on Foata normal form. 5463/30480 useless extension candidates. Maximal degree in co-relation 20163. Up to 28224 conditions per place. [2023-08-03 15:19:07,730 INFO L140 encePairwiseOnDemand]: 506/551 looper letters, 73 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-03 15:19:07,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 354 flow [2023-08-03 15:19:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:19:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:19:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2023-08-03 15:19:07,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2023-08-03 15:19:07,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 874 transitions. [2023-08-03 15:19:07,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 874 transitions. [2023-08-03 15:19:07,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:07,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 874 transitions. [2023-08-03 15:19:07,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states 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 15:19:07,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states 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 15:19:07,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states 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 15:19:07,739 INFO L175 Difference]: Start difference. First operand has 87 places, 134 transitions, 286 flow. Second operand 3 states and 874 transitions. [2023-08-03 15:19:07,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 354 flow [2023-08-03 15:19:07,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:19:07,744 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 214 flow [2023-08-03 15:19:07,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2023-08-03 15:19:07,748 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-03 15:19:07,748 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 214 flow [2023-08-03 15:19:07,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 15:19:07,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:07,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:19:07,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:19:07,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:19:07,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2106310507, now seen corresponding path program 1 times [2023-08-03 15:19:07,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:07,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917894417] [2023-08-03 15:19:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:07,794 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 15:19:07,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:07,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917894417] [2023-08-03 15:19:07,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917894417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:19:07,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93082307] [2023-08-03 15:19:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:07,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:07,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:19:07,796 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 15:19:07,821 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 15:19:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:07,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 15:19:07,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:19:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:19:07,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:19:07,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93082307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:19:07,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:19:07,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 15:19:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145823068] [2023-08-03 15:19:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:19:07,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:19:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:19:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:19:07,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 551 [2023-08-03 15:19:07,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states 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 15:19:07,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:07,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 551 [2023-08-03 15:19:07,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:09,705 INFO L124 PetriNetUnfolderBase]: 19612/30394 cut-off events. [2023-08-03 15:19:09,705 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-03 15:19:09,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58717 conditions, 30394 events. 19612/30394 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 215088 event pairs, 8256 based on Foata normal form. 0/24769 useless extension candidates. Maximal degree in co-relation 58704. Up to 28177 conditions per place. [2023-08-03 15:19:09,888 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 91 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-03 15:19:09,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 436 flow [2023-08-03 15:19:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:19:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:19:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 849 transitions. [2023-08-03 15:19:09,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136116152450091 [2023-08-03 15:19:09,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 849 transitions. [2023-08-03 15:19:09,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 849 transitions. [2023-08-03 15:19:09,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:09,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 849 transitions. [2023-08-03 15:19:09,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.0) internal successors, (849), 3 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 15:19:09,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states 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 15:19:09,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states 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 15:19:09,896 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 214 flow. Second operand 3 states and 849 transitions. [2023-08-03 15:19:09,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 436 flow [2023-08-03 15:19:09,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 111 transitions, 432 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 15:19:09,901 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 222 flow [2023-08-03 15:19:09,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-03 15:19:09,902 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-08-03 15:19:09,903 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 222 flow [2023-08-03 15:19:09,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states 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 15:19:09,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:09,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:19:09,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 15:19:10,108 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 15:19:10,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:19:10,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1126087290, now seen corresponding path program 1 times [2023-08-03 15:19:10,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:10,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369433361] [2023-08-03 15:19:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:10,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:10,148 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 15:19:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369433361] [2023-08-03 15:19:10,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369433361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:19:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118988711] [2023-08-03 15:19:10,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:10,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:10,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:19:10,151 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 15:19:10,153 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 15:19:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:10,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:19:10,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:19:10,235 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 15:19:10,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:19:10,254 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 15:19:10,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118988711] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:19:10,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:19:10,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-03 15:19:10,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013009740] [2023-08-03 15:19:10,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:19:10,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:19:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:10,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:19:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:19:10,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 551 [2023-08-03 15:19:10,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 253.16666666666666) internal successors, (1519), 6 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states 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 15:19:10,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:10,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 551 [2023-08-03 15:19:10,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:12,088 INFO L124 PetriNetUnfolderBase]: 20049/30702 cut-off events. [2023-08-03 15:19:12,088 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2023-08-03 15:19:12,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59605 conditions, 30702 events. 20049/30702 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 211180 event pairs, 17166 based on Foata normal form. 3/25281 useless extension candidates. Maximal degree in co-relation 59577. Up to 28195 conditions per place. [2023-08-03 15:19:12,264 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 74 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-08-03 15:19:12,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 97 transitions, 392 flow [2023-08-03 15:19:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:19:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:19:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1587 transitions. [2023-08-03 15:19:12,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48003629764065336 [2023-08-03 15:19:12,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1587 transitions. [2023-08-03 15:19:12,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1587 transitions. [2023-08-03 15:19:12,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:12,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1587 transitions. [2023-08-03 15:19:12,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.5) internal successors, (1587), 6 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states 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 15:19:12,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:19:12,277 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:19:12,277 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 222 flow. Second operand 6 states and 1587 transitions. [2023-08-03 15:19:12,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 97 transitions, 392 flow [2023-08-03 15:19:12,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:19:12,280 INFO L231 Difference]: Finished difference. Result has 99 places, 97 transitions, 256 flow [2023-08-03 15:19:12,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=99, PETRI_TRANSITIONS=97} [2023-08-03 15:19:12,281 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2023-08-03 15:19:12,281 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 97 transitions, 256 flow [2023-08-03 15:19:12,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.16666666666666) internal successors, (1519), 6 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states 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 15:19:12,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:12,282 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:19:12,289 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 15:19:12,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:12,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:19:12,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1022304290, now seen corresponding path program 2 times [2023-08-03 15:19:12,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:12,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079213335] [2023-08-03 15:19:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:12,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:19:12,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:12,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079213335] [2023-08-03 15:19:12,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079213335] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:19:12,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799074131] [2023-08-03 15:19:12,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 15:19:12,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:12,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:19:12,579 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 15:19:12,581 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 15:19:12,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-03 15:19:12,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:19:12,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-03 15:19:12,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:19:12,691 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 7 treesize of output 6 [2023-08-03 15:19:12,746 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 15:19:12,747 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 15:19:12,774 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 13 treesize of output 15 [2023-08-03 15:19:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 15:19:12,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:19:12,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799074131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:19:12,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:19:12,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-03 15:19:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623633421] [2023-08-03 15:19:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:19:12,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:19:12,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:12,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:19:12,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-03 15:19:12,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 551 [2023-08-03 15:19:12,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 97 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 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 15:19:12,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:12,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 551 [2023-08-03 15:19:12,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:15,544 INFO L124 PetriNetUnfolderBase]: 25762/40328 cut-off events. [2023-08-03 15:19:15,544 INFO L125 PetriNetUnfolderBase]: For 1007/1007 co-relation queries the response was YES. [2023-08-03 15:19:15,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78806 conditions, 40328 events. 25762/40328 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 300856 event pairs, 3903 based on Foata normal form. 0/33156 useless extension candidates. Maximal degree in co-relation 78770. Up to 27993 conditions per place. [2023-08-03 15:19:15,807 INFO L140 encePairwiseOnDemand]: 541/551 looper letters, 195 selfloop transitions, 16 changer transitions 0/229 dead transitions. [2023-08-03 15:19:15,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 229 transitions, 976 flow [2023-08-03 15:19:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:19:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:19:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1642 transitions. [2023-08-03 15:19:15,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966727162734422 [2023-08-03 15:19:15,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1642 transitions. [2023-08-03 15:19:15,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1642 transitions. [2023-08-03 15:19:15,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:15,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1642 transitions. [2023-08-03 15:19:15,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 273.6666666666667) internal successors, (1642), 6 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states 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 15:19:15,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:19:15,821 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:19:15,822 INFO L175 Difference]: Start difference. First operand has 99 places, 97 transitions, 256 flow. Second operand 6 states and 1642 transitions. [2023-08-03 15:19:15,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 229 transitions, 976 flow [2023-08-03 15:19:15,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 229 transitions, 962 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 15:19:15,826 INFO L231 Difference]: Finished difference. Result has 107 places, 111 transitions, 345 flow [2023-08-03 15:19:15,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=107, PETRI_TRANSITIONS=111} [2023-08-03 15:19:15,827 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 20 predicate places. [2023-08-03 15:19:15,827 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 111 transitions, 345 flow [2023-08-03 15:19:15,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 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 15:19:15,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:15,828 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:19:15,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 15:19:16,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:16,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:19:16,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash -894428478, now seen corresponding path program 1 times [2023-08-03 15:19:16,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:16,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113358657] [2023-08-03 15:19:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:16,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 15:19:16,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113358657] [2023-08-03 15:19:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113358657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:19:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047383531] [2023-08-03 15:19:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:16,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:16,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:19:16,082 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 15:19:16,084 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 15:19:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:16,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 15:19:16,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:19:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:19:16,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:19:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:19:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047383531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:19:16,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:19:16,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-08-03 15:19:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014440862] [2023-08-03 15:19:16,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:19:16,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 15:19:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 15:19:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-03 15:19:16,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 551 [2023-08-03 15:19:16,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 111 transitions, 345 flow. Second operand has 14 states, 14 states have (on average 248.92857142857142) internal successors, (3485), 14 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states 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 15:19:16,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:16,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 551 [2023-08-03 15:19:16,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:19,168 INFO L124 PetriNetUnfolderBase]: 25753/40268 cut-off events. [2023-08-03 15:19:19,168 INFO L125 PetriNetUnfolderBase]: For 7551/7555 co-relation queries the response was YES. [2023-08-03 15:19:19,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86237 conditions, 40268 events. 25753/40268 cut-off events. For 7551/7555 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 301654 event pairs, 1107 based on Foata normal form. 32/35511 useless extension candidates. Maximal degree in co-relation 86178. Up to 35202 conditions per place. [2023-08-03 15:19:19,348 INFO L140 encePairwiseOnDemand]: 545/551 looper letters, 141 selfloop transitions, 15 changer transitions 0/174 dead transitions. [2023-08-03 15:19:19,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 174 transitions, 849 flow [2023-08-03 15:19:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-03 15:19:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-03 15:19:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3601 transitions. [2023-08-03 15:19:19,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46681358568835885 [2023-08-03 15:19:19,357 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3601 transitions. [2023-08-03 15:19:19,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3601 transitions. [2023-08-03 15:19:19,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:19,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3601 transitions. [2023-08-03 15:19:19,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 257.2142857142857) internal successors, (3601), 14 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states 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 15:19:19,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 551.0) internal successors, (8265), 15 states have internal predecessors, (8265), 0 states have call successors, (0), 0 states 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 15:19:19,376 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 551.0) internal successors, (8265), 15 states have internal predecessors, (8265), 0 states have call successors, (0), 0 states 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 15:19:19,376 INFO L175 Difference]: Start difference. First operand has 107 places, 111 transitions, 345 flow. Second operand 14 states and 3601 transitions. [2023-08-03 15:19:19,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 174 transitions, 849 flow [2023-08-03 15:19:19,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 174 transitions, 849 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:19:19,396 INFO L231 Difference]: Finished difference. Result has 122 places, 118 transitions, 427 flow [2023-08-03 15:19:19,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=427, PETRI_PLACES=122, PETRI_TRANSITIONS=118} [2023-08-03 15:19:19,397 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 35 predicate places. [2023-08-03 15:19:19,397 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 118 transitions, 427 flow [2023-08-03 15:19:19,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.92857142857142) internal successors, (3485), 14 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states 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 15:19:19,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:19,398 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 15:19:19,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 15:19:19,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:19,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:19:19,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1643342454, now seen corresponding path program 1 times [2023-08-03 15:19:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813918546] [2023-08-03 15:19:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-03 15:19:19,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813918546] [2023-08-03 15:19:19,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813918546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:19:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442931690] [2023-08-03 15:19:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:19,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:19,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:19:19,670 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 15:19:19,673 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 15:19:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:19,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:19:19,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:19:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-03 15:19:19,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:19:19,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442931690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:19:19,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:19:19,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 15:19:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850474682] [2023-08-03 15:19:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:19:19,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:19:19,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:19:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:19:19,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 551 [2023-08-03 15:19:19,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 118 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 15:19:19,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:19:19,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 551 [2023-08-03 15:19:19,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:19:22,364 INFO L124 PetriNetUnfolderBase]: 24914/38960 cut-off events. [2023-08-03 15:19:22,364 INFO L125 PetriNetUnfolderBase]: For 9391/9393 co-relation queries the response was YES. [2023-08-03 15:19:22,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84730 conditions, 38960 events. 24914/38960 cut-off events. For 9391/9393 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 290965 event pairs, 610 based on Foata normal form. 403/34682 useless extension candidates. Maximal degree in co-relation 84656. Up to 35199 conditions per place. [2023-08-03 15:19:22,605 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 152 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2023-08-03 15:19:22,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 172 transitions, 881 flow [2023-08-03 15:19:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:19:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:19:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1381 transitions. [2023-08-03 15:19:22,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012704174228675 [2023-08-03 15:19:22,610 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1381 transitions. [2023-08-03 15:19:22,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1381 transitions. [2023-08-03 15:19:22,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:19:22,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1381 transitions. [2023-08-03 15:19:22,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.2) internal successors, (1381), 5 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states 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 15:19:22,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states 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 15:19:22,618 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states 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 15:19:22,618 INFO L175 Difference]: Start difference. First operand has 122 places, 118 transitions, 427 flow. Second operand 5 states and 1381 transitions. [2023-08-03 15:19:22,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 172 transitions, 881 flow [2023-08-03 15:19:22,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 172 transitions, 807 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-08-03 15:19:22,642 INFO L231 Difference]: Finished difference. Result has 113 places, 116 transitions, 347 flow [2023-08-03 15:19:22,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=113, PETRI_TRANSITIONS=116} [2023-08-03 15:19:22,643 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 26 predicate places. [2023-08-03 15:19:22,643 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 116 transitions, 347 flow [2023-08-03 15:19:22,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 15:19:22,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:19:22,644 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:19:22,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 15:19:22,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:22,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:19:22,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:19:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -147273235, now seen corresponding path program 1 times [2023-08-03 15:19:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:19:22,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193105022] [2023-08-03 15:19:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:19:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:19:23,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:19:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193105022] [2023-08-03 15:19:23,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193105022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:19:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502188087] [2023-08-03 15:19:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:19:23,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:19:23,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:19:23,111 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:19:23,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 15:19:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:19:23,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-03 15:19:23,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:19:23,236 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 7 treesize of output 6 [2023-08-03 15:19:23,302 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 15:19:23,302 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 15:19:23,322 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 13 treesize of output 15 [2023-08-03 15:19:23,347 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 13 treesize of output 15 [2023-08-03 15:19:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:19:23,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:19:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:19:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502188087] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:19:33,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:19:33,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 15:19:33,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870409869] [2023-08-03 15:19:33,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:19:33,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 15:19:33,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:19:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 15:19:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=92, Unknown=5, NotChecked=0, Total=132 [2023-08-03 15:19:35,580 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] [2023-08-03 15:19:37,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:39,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:41,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:43,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:45,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:47,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:49,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:51,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:53,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:55,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:57,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:19:59,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:01,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:03,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:05,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:07,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:09,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:11,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:13,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:15,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:17,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:19,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:21,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:23,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:25,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:27,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:29,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:31,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:33,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:35,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:37,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:39,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:20:39,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 551 [2023-08-03 15:20:39,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 116 transitions, 347 flow. Second operand has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states 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 15:20:39,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:20:39,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 551 [2023-08-03 15:20:39,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:20:43,056 INFO L124 PetriNetUnfolderBase]: 31843/49070 cut-off events. [2023-08-03 15:20:43,057 INFO L125 PetriNetUnfolderBase]: For 13126/13126 co-relation queries the response was YES. [2023-08-03 15:20:43,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107054 conditions, 49070 events. 31843/49070 cut-off events. For 13126/13126 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 365454 event pairs, 4626 based on Foata normal form. 0/43251 useless extension candidates. Maximal degree in co-relation 99747. Up to 29314 conditions per place. [2023-08-03 15:20:43,263 INFO L140 encePairwiseOnDemand]: 538/551 looper letters, 252 selfloop transitions, 32 changer transitions 0/299 dead transitions. [2023-08-03 15:20:43,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 299 transitions, 1404 flow [2023-08-03 15:20:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:20:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:20:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1718 transitions. [2023-08-03 15:20:43,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44542390458905884 [2023-08-03 15:20:43,267 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1718 transitions. [2023-08-03 15:20:43,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1718 transitions. [2023-08-03 15:20:43,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:20:43,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1718 transitions. [2023-08-03 15:20:43,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.42857142857142) internal successors, (1718), 7 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 15:20:43,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 551.0) internal successors, (4408), 8 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states 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 15:20:43,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 551.0) internal successors, (4408), 8 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states 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 15:20:43,276 INFO L175 Difference]: Start difference. First operand has 113 places, 116 transitions, 347 flow. Second operand 7 states and 1718 transitions. [2023-08-03 15:20:43,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 299 transitions, 1404 flow [2023-08-03 15:20:43,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 299 transitions, 1394 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:20:43,317 INFO L231 Difference]: Finished difference. Result has 122 places, 134 transitions, 562 flow [2023-08-03 15:20:43,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=562, PETRI_PLACES=122, PETRI_TRANSITIONS=134} [2023-08-03 15:20:43,317 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 35 predicate places. [2023-08-03 15:20:43,317 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 134 transitions, 562 flow [2023-08-03 15:20:43,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states 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 15:20:43,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:20:43,318 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:20:43,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 15:20:43,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 15:20:43,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:20:43,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:20:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1555784300, now seen corresponding path program 1 times [2023-08-03 15:20:43,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:20:43,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636675286] [2023-08-03 15:20:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:20:43,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:20:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:20:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:20:44,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:20:44,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636675286] [2023-08-03 15:20:44,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636675286] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:20:44,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527909241] [2023-08-03 15:20:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:20:44,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:20:44,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:20:44,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:20:44,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 15:20:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:20:44,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-03 15:20:44,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:20:44,132 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 7 treesize of output 6 [2023-08-03 15:20:44,196 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 15:20:44,197 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 15:20:44,215 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 13 treesize of output 15 [2023-08-03 15:20:44,238 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 13 treesize of output 15 [2023-08-03 15:20:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:20:44,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:20:54,330 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_390 (Array Int Int)) (|ULTIMATE.start_cache_entry_addref_~entry#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_390) |c_~#cache~0.base|) |ULTIMATE.start_cache_entry_addref_~entry#1.offset|) 0)) is different from false [2023-08-03 15:20:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 5 not checked. [2023-08-03 15:20:54,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527909241] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:20:54,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:20:54,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-08-03 15:20:54,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938988169] [2023-08-03 15:20:54,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:20:54,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-03 15:20:54,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:20:54,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-03 15:20:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=139, Unknown=2, NotChecked=24, Total=210 [2023-08-03 15:20:54,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 551 [2023-08-03 15:20:54,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 134 transitions, 562 flow. Second operand has 15 states, 15 states have (on average 185.8) internal successors, (2787), 15 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states 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 15:20:54,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:20:54,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 551 [2023-08-03 15:20:54,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:21:00,598 INFO L124 PetriNetUnfolderBase]: 55657/83971 cut-off events. [2023-08-03 15:21:00,598 INFO L125 PetriNetUnfolderBase]: For 46142/46142 co-relation queries the response was YES. [2023-08-03 15:21:00,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203306 conditions, 83971 events. 55657/83971 cut-off events. For 46142/46142 co-relation queries the response was YES. Maximal size of possible extension queue 2018. Compared 618033 event pairs, 11624 based on Foata normal form. 0/77882 useless extension candidates. Maximal degree in co-relation 193088. Up to 45532 conditions per place. [2023-08-03 15:21:01,099 INFO L140 encePairwiseOnDemand]: 539/551 looper letters, 282 selfloop transitions, 49 changer transitions 0/341 dead transitions. [2023-08-03 15:21:01,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 341 transitions, 1906 flow [2023-08-03 15:21:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:21:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:21:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1559 transitions. [2023-08-03 15:21:01,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042001555613171 [2023-08-03 15:21:01,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1559 transitions. [2023-08-03 15:21:01,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1559 transitions. [2023-08-03 15:21:01,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:21:01,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1559 transitions. [2023-08-03 15:21:01,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 222.71428571428572) internal successors, (1559), 7 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states 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 15:21:01,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 551.0) internal successors, (4408), 8 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states 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 15:21:01,111 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 551.0) internal successors, (4408), 8 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states 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 15:21:01,111 INFO L175 Difference]: Start difference. First operand has 122 places, 134 transitions, 562 flow. Second operand 7 states and 1559 transitions. [2023-08-03 15:21:01,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 341 transitions, 1906 flow [2023-08-03 15:21:01,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 341 transitions, 1906 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:21:01,286 INFO L231 Difference]: Finished difference. Result has 132 places, 161 transitions, 962 flow [2023-08-03 15:21:01,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=962, PETRI_PLACES=132, PETRI_TRANSITIONS=161} [2023-08-03 15:21:01,286 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 45 predicate places. [2023-08-03 15:21:01,286 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 161 transitions, 962 flow [2023-08-03 15:21:01,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 185.8) internal successors, (2787), 15 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states 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 15:21:01,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:21:01,287 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:21:01,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 15:21:01,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 15:21:01,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:21:01,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:21:01,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1207054286, now seen corresponding path program 1 times [2023-08-03 15:21:01,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:21:01,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076655414] [2023-08-03 15:21:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:21:01,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:21:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:21:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:21:01,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:21:01,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076655414] [2023-08-03 15:21:01,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076655414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:21:01,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:21:01,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:21:01,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521352622] [2023-08-03 15:21:01,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:21:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:21:01,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:21:01,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:21:01,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:21:01,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 551 [2023-08-03 15:21:01,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 161 transitions, 962 flow. Second operand has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:21:01,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:21:01,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 551 [2023-08-03 15:21:01,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:21:11,427 INFO L124 PetriNetUnfolderBase]: 74986/117948 cut-off events. [2023-08-03 15:21:11,428 INFO L125 PetriNetUnfolderBase]: For 124938/124938 co-relation queries the response was YES. [2023-08-03 15:21:11,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311255 conditions, 117948 events. 74986/117948 cut-off events. For 124938/124938 co-relation queries the response was YES. Maximal size of possible extension queue 2456. Compared 978863 event pairs, 20706 based on Foata normal form. 6896/117992 useless extension candidates. Maximal degree in co-relation 291616. Up to 66271 conditions per place. [2023-08-03 15:21:12,241 INFO L140 encePairwiseOnDemand]: 523/551 looper letters, 239 selfloop transitions, 28 changer transitions 0/279 dead transitions. [2023-08-03 15:21:12,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 279 transitions, 2283 flow [2023-08-03 15:21:12,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:21:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:21:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1062 transitions. [2023-08-03 15:21:12,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48185117967332125 [2023-08-03 15:21:12,244 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1062 transitions. [2023-08-03 15:21:12,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1062 transitions. [2023-08-03 15:21:12,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:21:12,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1062 transitions. [2023-08-03 15:21:12,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states 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 15:21:12,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states 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 15:21:12,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states 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 15:21:12,249 INFO L175 Difference]: Start difference. First operand has 132 places, 161 transitions, 962 flow. Second operand 4 states and 1062 transitions. [2023-08-03 15:21:12,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 279 transitions, 2283 flow [2023-08-03 15:21:12,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 279 transitions, 2283 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:21:12,637 INFO L231 Difference]: Finished difference. Result has 136 places, 176 transitions, 1105 flow [2023-08-03 15:21:12,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1105, PETRI_PLACES=136, PETRI_TRANSITIONS=176} [2023-08-03 15:21:12,638 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 49 predicate places. [2023-08-03 15:21:12,638 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 176 transitions, 1105 flow [2023-08-03 15:21:12,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:21:12,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:21:12,638 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:21:12,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 15:21:12,638 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:21:12,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:21:12,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1355733857, now seen corresponding path program 1 times [2023-08-03 15:21:12,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:21:12,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484222158] [2023-08-03 15:21:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:21:12,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:21:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:21:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:21:13,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:21:13,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484222158] [2023-08-03 15:21:13,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484222158] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:21:13,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563387501] [2023-08-03 15:21:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:21:13,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:21:13,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:21:13,234 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:21:13,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 15:21:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:21:13,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-03 15:21:13,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:21:13,435 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 15:21:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:21:13,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:21:13,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563387501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:21:13,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:21:13,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-03 15:21:13,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734275260] [2023-08-03 15:21:13,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:21:13,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:21:13,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:21:13,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:21:13,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-08-03 15:21:13,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 551 [2023-08-03 15:21:13,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 176 transitions, 1105 flow. Second operand has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states 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 15:21:13,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:21:13,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 551 [2023-08-03 15:21:13,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:21:35,201 INFO L124 PetriNetUnfolderBase]: 145973/233486 cut-off events. [2023-08-03 15:21:35,201 INFO L125 PetriNetUnfolderBase]: For 301870/302139 co-relation queries the response was YES. [2023-08-03 15:21:36,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715784 conditions, 233486 events. 145973/233486 cut-off events. For 301870/302139 co-relation queries the response was YES. Maximal size of possible extension queue 5580. Compared 2178319 event pairs, 52585 based on Foata normal form. 2699/219780 useless extension candidates. Maximal degree in co-relation 675451. Up to 103585 conditions per place. [2023-08-03 15:21:37,324 INFO L140 encePairwiseOnDemand]: 530/551 looper letters, 427 selfloop transitions, 42 changer transitions 0/486 dead transitions. [2023-08-03 15:21:37,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 486 transitions, 4064 flow [2023-08-03 15:21:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:21:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:21:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1633 transitions. [2023-08-03 15:21:37,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939503932244404 [2023-08-03 15:21:37,327 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1633 transitions. [2023-08-03 15:21:37,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1633 transitions. [2023-08-03 15:21:37,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:21:37,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1633 transitions. [2023-08-03 15:21:37,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 15:21:37,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:21:37,334 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:21:37,334 INFO L175 Difference]: Start difference. First operand has 136 places, 176 transitions, 1105 flow. Second operand 6 states and 1633 transitions. [2023-08-03 15:21:37,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 486 transitions, 4064 flow [2023-08-03 15:21:38,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 486 transitions, 4063 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:21:38,093 INFO L231 Difference]: Finished difference. Result has 143 places, 214 transitions, 1528 flow [2023-08-03 15:21:38,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1528, PETRI_PLACES=143, PETRI_TRANSITIONS=214} [2023-08-03 15:21:38,094 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 56 predicate places. [2023-08-03 15:21:38,094 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 214 transitions, 1528 flow [2023-08-03 15:21:38,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states 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 15:21:38,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:21:38,095 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:21:38,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 15:21:38,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 15:21:38,300 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:21:38,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:21:38,300 INFO L85 PathProgramCache]: Analyzing trace with hash -863677133, now seen corresponding path program 2 times [2023-08-03 15:21:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:21:38,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905073760] [2023-08-03 15:21:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:21:38,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:21:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:21:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 15:21:38,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:21:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905073760] [2023-08-03 15:21:38,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905073760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:21:38,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:21:38,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:21:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148146434] [2023-08-03 15:21:38,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:21:38,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:21:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:21:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:21:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:21:38,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 551 [2023-08-03 15:21:38,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 214 transitions, 1528 flow. Second operand has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 15:21:38,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:21:38,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 551 [2023-08-03 15:21:38,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:22:30,782 INFO L124 PetriNetUnfolderBase]: 275186/442415 cut-off events. [2023-08-03 15:22:30,782 INFO L125 PetriNetUnfolderBase]: For 854553/855666 co-relation queries the response was YES. [2023-08-03 15:22:33,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534455 conditions, 442415 events. 275186/442415 cut-off events. For 854553/855666 co-relation queries the response was YES. Maximal size of possible extension queue 11076. Compared 4475116 event pairs, 101163 based on Foata normal form. 3635/412491 useless extension candidates. Maximal degree in co-relation 1435644. Up to 216830 conditions per place. [2023-08-03 15:22:35,116 INFO L140 encePairwiseOnDemand]: 531/551 looper letters, 484 selfloop transitions, 59 changer transitions 0/560 dead transitions. [2023-08-03 15:22:35,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 560 transitions, 5181 flow [2023-08-03 15:22:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:22:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:22:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1609 transitions. [2023-08-03 15:22:35,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866908650937689 [2023-08-03 15:22:35,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1609 transitions. [2023-08-03 15:22:35,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1609 transitions. [2023-08-03 15:22:35,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:22:35,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1609 transitions. [2023-08-03 15:22:35,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.1666666666667) internal successors, (1609), 6 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states 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 15:22:35,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:22:35,126 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:22:35,126 INFO L175 Difference]: Start difference. First operand has 143 places, 214 transitions, 1528 flow. Second operand 6 states and 1609 transitions. [2023-08-03 15:22:35,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 560 transitions, 5181 flow [2023-08-03 15:22:42,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 560 transitions, 5170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:22:42,836 INFO L231 Difference]: Finished difference. Result has 149 places, 268 transitions, 2285 flow [2023-08-03 15:22:42,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2285, PETRI_PLACES=149, PETRI_TRANSITIONS=268} [2023-08-03 15:22:42,837 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 62 predicate places. [2023-08-03 15:22:42,837 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 268 transitions, 2285 flow [2023-08-03 15:22:42,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 15:22:42,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:22:42,838 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:22:42,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 15:22:42,838 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:22:42,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:22:42,838 INFO L85 PathProgramCache]: Analyzing trace with hash -463805761, now seen corresponding path program 3 times [2023-08-03 15:22:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:22:42,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591761849] [2023-08-03 15:22:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:22:42,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:22:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:22:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:22:43,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:22:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591761849] [2023-08-03 15:22:43,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591761849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:22:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896517366] [2023-08-03 15:22:43,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 15:22:43,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:22:43,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:22:43,269 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:22:43,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 15:22:43,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-03 15:22:43,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:22:43,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-03 15:22:43,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:22:43,468 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 13 treesize of output 9 [2023-08-03 15:22:43,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 15:22:43,502 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 16 treesize of output 18 [2023-08-03 15:22:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 15:22:43,537 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 16 treesize of output 18 [2023-08-03 15:22:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:22:43,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:22:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896517366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:22:43,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:22:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-08-03 15:22:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739444416] [2023-08-03 15:22:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:22:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 15:22:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:22:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 15:22:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-03 15:22:43,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 551 [2023-08-03 15:22:43,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 268 transitions, 2285 flow. Second operand has 7 states, 7 states have (on average 232.57142857142858) internal successors, (1628), 7 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 15:22:43,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:22:43,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 551 [2023-08-03 15:22:43,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:23:49,035 INFO L124 PetriNetUnfolderBase]: 311987/503089 cut-off events. [2023-08-03 15:23:49,035 INFO L125 PetriNetUnfolderBase]: For 1473327/1475233 co-relation queries the response was YES. [2023-08-03 15:23:51,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1933505 conditions, 503089 events. 311987/503089 cut-off events. For 1473327/1475233 co-relation queries the response was YES. Maximal size of possible extension queue 12875. Compared 5193128 event pairs, 123066 based on Foata normal form. 640/465361 useless extension candidates. Maximal degree in co-relation 1817545. Up to 207691 conditions per place. [2023-08-03 15:23:54,059 INFO L140 encePairwiseOnDemand]: 543/551 looper letters, 576 selfloop transitions, 38 changer transitions 0/631 dead transitions. [2023-08-03 15:23:54,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 631 transitions, 6465 flow [2023-08-03 15:23:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:23:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:23:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1633 transitions. [2023-08-03 15:23:54,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939503932244404 [2023-08-03 15:23:54,062 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1633 transitions. [2023-08-03 15:23:54,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1633 transitions. [2023-08-03 15:23:54,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:23:54,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1633 transitions. [2023-08-03 15:23:54,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 15:23:54,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:23:54,069 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:23:54,069 INFO L175 Difference]: Start difference. First operand has 149 places, 268 transitions, 2285 flow. Second operand 6 states and 1633 transitions. [2023-08-03 15:23:54,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 631 transitions, 6465 flow [2023-08-03 15:23:59,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 631 transitions, 6355 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-08-03 15:23:59,181 INFO L231 Difference]: Finished difference. Result has 154 places, 285 transitions, 2524 flow [2023-08-03 15:23:59,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2524, PETRI_PLACES=154, PETRI_TRANSITIONS=285} [2023-08-03 15:23:59,181 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 67 predicate places. [2023-08-03 15:23:59,181 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 285 transitions, 2524 flow [2023-08-03 15:23:59,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 232.57142857142858) internal successors, (1628), 7 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 15:23:59,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:23:59,182 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:23:59,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-03 15:23:59,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 15:23:59,386 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:23:59,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:23:59,387 INFO L85 PathProgramCache]: Analyzing trace with hash -343071163, now seen corresponding path program 4 times [2023-08-03 15:23:59,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:23:59,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757506892] [2023-08-03 15:23:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:23:59,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:23:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:23:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 15:23:59,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:23:59,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757506892] [2023-08-03 15:23:59,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757506892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:23:59,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:23:59,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:23:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442890205] [2023-08-03 15:23:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:23:59,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:23:59,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:23:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:23:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:23:59,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 551 [2023-08-03 15:23:59,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 285 transitions, 2524 flow. Second operand has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 15:23:59,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:23:59,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 551 [2023-08-03 15:23:59,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:25:18,842 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1508] L941-36-->L946-6: Formula: (and (= (store |v_#pthreadsMutex_469| |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45| (store (select |v_#pthreadsMutex_469| |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|) (+ |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45| 4) 0)) |v_#pthreadsMutex_468|) (= (+ |v_t_funThread2of2ForFork0_~i~0#1_44| 1) |v_t_funThread2of2ForFork0_~i~0#1_43|)) InVars {#pthreadsMutex=|v_#pthreadsMutex_469|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_44|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_468|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_43|, t_funThread2of2ForFork0_#t~post41#1=|v_t_funThread2of2ForFork0_#t~post41#1_17|} AuxVars[] AssignedVars[#pthreadsMutex, t_funThread2of2ForFork0_~i~0#1, t_funThread2of2ForFork0_#t~post41#1][343], [t_funThread1of2ForFork0InUse, Black: 1154#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| 4) (+ |~#cache~0.offset| 4)) 1)), Black: 420#(<= |ULTIMATE.start_main_~i~3#1| 1), Black: 1152#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| 4) (+ |~#cache~0.offset| 4)) 1)), 359#true, Black: 1027#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| 4) 4) 1)), 918#(and (= |~#cache~0.base| 4) (not (= 4 |~#__global_lock~0.base|))), Black: 1029#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| 4) 4) 1)), Black: 987#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0)), 1160#(and (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0)), Black: 908#(and (= |ULTIMATE.start_cache_entry_addref_~entry#1.base| 4) (= |~#__global_lock~0.offset| 0) (<= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (< 3 |~#cache~0.base|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 905#(and (= |~#__global_lock~0.offset| 0) (<= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (< 3 |~#cache~0.base|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), 588#true, Black: 751#(= (select (select |#memory_int| |ULTIMATE.start_cache_entry_addref_~entry#1.base|) |ULTIMATE.start_cache_entry_addref_~entry#1.offset|) 0), Black: 1037#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0)), Black: 1041#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), Black: 1043#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), Black: 919#(and (= |~#cache~0.base| 4) (= (select (select |#pthreadsMutex| |~#__global_lock~0.base|) |~#__global_lock~0.offset|) 1) (not (= 4 |~#__global_lock~0.base|))), Black: 369#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 407#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 411#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 409#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 735#(and (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 593#(= (select (select |#memory_int| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 0), Black: 280#(<= |ULTIMATE.start_main_~i~3#1| 0), Black: 590#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 737#(and (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), 73#L941-5true, 522#(<= 2 |ULTIMATE.start_main_~i~3#1|), Black: 733#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), 745#true, 417#true, 28#L957-10true, 1059#(and (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3)), 206#L946-6true]) [2023-08-03 15:25:18,842 INFO L294 olderBase$Statistics]: this new event has 58 ancestors and is cut-off event [2023-08-03 15:25:18,842 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-03 15:25:18,842 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-03 15:25:18,842 INFO L297 olderBase$Statistics]: existing Event has 52 ancestors and is cut-off event [2023-08-03 15:25:26,041 INFO L124 PetriNetUnfolderBase]: 411425/667111 cut-off events. [2023-08-03 15:25:26,041 INFO L125 PetriNetUnfolderBase]: For 2244334/2247321 co-relation queries the response was YES. [2023-08-03 15:25:30,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2654389 conditions, 667111 events. 411425/667111 cut-off events. For 2244334/2247321 co-relation queries the response was YES. Maximal size of possible extension queue 17448. Compared 7152129 event pairs, 161916 based on Foata normal form. 1103/616773 useless extension candidates. Maximal degree in co-relation 2492596. Up to 259410 conditions per place. [2023-08-03 15:25:33,067 INFO L140 encePairwiseOnDemand]: 543/551 looper letters, 707 selfloop transitions, 47 changer transitions 0/771 dead transitions. [2023-08-03 15:25:33,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 771 transitions, 8373 flow [2023-08-03 15:25:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:25:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:25:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2023-08-03 15:25:33,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514216575922565 [2023-08-03 15:25:33,071 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2023-08-03 15:25:33,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2023-08-03 15:25:33,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:25:33,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2023-08-03 15:25:33,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 15:25:33,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:25:33,076 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:25:33,076 INFO L175 Difference]: Start difference. First operand has 154 places, 285 transitions, 2524 flow. Second operand 6 states and 1700 transitions. [2023-08-03 15:25:33,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 771 transitions, 8373 flow [2023-08-03 15:25:57,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 771 transitions, 8342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:25:57,572 INFO L231 Difference]: Finished difference. Result has 160 places, 321 transitions, 3176 flow [2023-08-03 15:25:57,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3176, PETRI_PLACES=160, PETRI_TRANSITIONS=321} [2023-08-03 15:25:57,573 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 73 predicate places. [2023-08-03 15:25:57,573 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 321 transitions, 3176 flow [2023-08-03 15:25:57,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 15:25:57,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:25:57,573 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:25:57,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 15:25:57,573 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:25:57,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:25:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1766496957, now seen corresponding path program 5 times [2023-08-03 15:25:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:25:57,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291471811] [2023-08-03 15:25:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:25:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:25:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:25:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-03 15:25:57,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:25:57,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291471811] [2023-08-03 15:25:57,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291471811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:25:57,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:25:57,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:25:57,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084538201] [2023-08-03 15:25:57,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:25:57,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:25:57,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:25:57,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:25:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:25:58,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 551 [2023-08-03 15:25:58,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 321 transitions, 3176 flow. Second operand has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 15:25:58,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:25:58,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 551 [2023-08-03 15:25:58,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:27:16,384 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1508] L941-36-->L946-6: Formula: (and (= (store |v_#pthreadsMutex_469| |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45| (store (select |v_#pthreadsMutex_469| |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|) (+ |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45| 4) 0)) |v_#pthreadsMutex_468|) (= (+ |v_t_funThread2of2ForFork0_~i~0#1_44| 1) |v_t_funThread2of2ForFork0_~i~0#1_43|)) InVars {#pthreadsMutex=|v_#pthreadsMutex_469|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_44|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_468|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_43|, t_funThread2of2ForFork0_#t~post41#1=|v_t_funThread2of2ForFork0_#t~post41#1_17|} AuxVars[] AssignedVars[#pthreadsMutex, t_funThread2of2ForFork0_~i~0#1, t_funThread2of2ForFork0_#t~post41#1][372], [t_funThread1of2ForFork0InUse, Black: 1154#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| 4) (+ |~#cache~0.offset| 4)) 1)), Black: 1152#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| 4) (+ |~#cache~0.offset| 4)) 1)), Black: 420#(<= |ULTIMATE.start_main_~i~3#1| 1), 359#true, Black: 1027#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| 4) 4) 1)), 918#(and (= |~#cache~0.base| 4) (not (= 4 |~#__global_lock~0.base|))), Black: 1029#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| 4) 4) 1)), Black: 987#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0)), 1160#(and (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0)), Black: 1162#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0)), Black: 1161#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0)), Black: 908#(and (= |ULTIMATE.start_cache_entry_addref_~entry#1.base| 4) (= |~#__global_lock~0.offset| 0) (<= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (< 3 |~#cache~0.base|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 905#(and (= |~#__global_lock~0.offset| 0) (<= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (< 3 |~#cache~0.base|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 1165#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), 588#true, Black: 751#(= (select (select |#memory_int| |ULTIMATE.start_cache_entry_addref_~entry#1.base|) |ULTIMATE.start_cache_entry_addref_~entry#1.offset|) 0), Black: 1037#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0)), Black: 1041#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), Black: 1043#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), Black: 919#(and (= |~#cache~0.base| 4) (= (select (select |#pthreadsMutex| |~#__global_lock~0.base|) |~#__global_lock~0.offset|) 1) (not (= 4 |~#__global_lock~0.base|))), Black: 369#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 407#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 411#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 409#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 735#(and (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 593#(= (select (select |#memory_int| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 0), Black: 280#(<= |ULTIMATE.start_main_~i~3#1| 0), Black: 590#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), 73#L941-5true, Black: 737#(and (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 733#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), 522#(<= 2 |ULTIMATE.start_main_~i~3#1|), 745#true, 417#true, 28#L957-10true, 206#L946-6true, 1172#(= |~#cache~0.offset| 0)]) [2023-08-03 15:27:16,384 INFO L294 olderBase$Statistics]: this new event has 58 ancestors and is cut-off event [2023-08-03 15:27:16,384 INFO L297 olderBase$Statistics]: existing Event has 52 ancestors and is cut-off event [2023-08-03 15:27:16,384 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-03 15:27:16,384 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-03 15:27:16,596 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1508] L941-36-->L946-6: Formula: (and (= (store |v_#pthreadsMutex_469| |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45| (store (select |v_#pthreadsMutex_469| |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|) (+ |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45| 4) 0)) |v_#pthreadsMutex_468|) (= (+ |v_t_funThread2of2ForFork0_~i~0#1_44| 1) |v_t_funThread2of2ForFork0_~i~0#1_43|)) InVars {#pthreadsMutex=|v_#pthreadsMutex_469|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_44|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_468|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_43|, t_funThread2of2ForFork0_#t~post41#1=|v_t_funThread2of2ForFork0_#t~post41#1_17|} AuxVars[] AssignedVars[#pthreadsMutex, t_funThread2of2ForFork0_~i~0#1, t_funThread2of2ForFork0_#t~post41#1][537], [t_funThread1of2ForFork0InUse, 1173#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0)), Black: 1154#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| 4) (+ |~#cache~0.offset| 4)) 1)), Black: 420#(<= |ULTIMATE.start_main_~i~3#1| 1), Black: 1152#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| 4) (+ |~#cache~0.offset| 4)) 1)), 359#true, Black: 1027#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| 4) 4) 1)), Black: 1029#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| 4) 4) 1)), 918#(and (= |~#cache~0.base| 4) (not (= 4 |~#__global_lock~0.base|))), 1160#(and (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0)), Black: 1162#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0)), Black: 908#(and (= |ULTIMATE.start_cache_entry_addref_~entry#1.base| 4) (= |~#__global_lock~0.offset| 0) (<= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (< 3 |~#cache~0.base|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 1161#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0)), Black: 1165#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), Black: 905#(and (= |~#__global_lock~0.offset| 0) (<= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (< 3 |~#cache~0.base|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), 588#true, Black: 751#(= (select (select |#memory_int| |ULTIMATE.start_cache_entry_addref_~entry#1.base|) |ULTIMATE.start_cache_entry_addref_~entry#1.offset|) 0), Black: 1037#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0)), Black: 1041#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), Black: 1043#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), Black: 919#(and (= |~#cache~0.base| 4) (= (select (select |#pthreadsMutex| |~#__global_lock~0.base|) |~#__global_lock~0.offset|) 1) (not (= 4 |~#__global_lock~0.base|))), Black: 369#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 407#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 411#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 409#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), 1111#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3)), Black: 735#(and (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 593#(= (select (select |#memory_int| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 0), Black: 280#(<= |ULTIMATE.start_main_~i~3#1| 0), Black: 590#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 737#(and (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), 73#L941-5true, Black: 733#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), 522#(<= 2 |ULTIMATE.start_main_~i~3#1|), 987#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0)), 745#true, 417#true, 28#L957-10true, 206#L946-6true]) [2023-08-03 15:27:16,596 INFO L294 olderBase$Statistics]: this new event has 58 ancestors and is cut-off event [2023-08-03 15:27:16,596 INFO L297 olderBase$Statistics]: existing Event has 52 ancestors and is cut-off event [2023-08-03 15:27:16,596 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-03 15:27:16,596 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-03 15:27:23,980 INFO L124 PetriNetUnfolderBase]: 409752/664612 cut-off events. [2023-08-03 15:27:23,980 INFO L125 PetriNetUnfolderBase]: For 2702111/2705395 co-relation queries the response was YES. [2023-08-03 15:27:28,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733348 conditions, 664612 events. 409752/664612 cut-off events. For 2702111/2705395 co-relation queries the response was YES. Maximal size of possible extension queue 17324. Compared 7118956 event pairs, 190222 based on Foata normal form. 769/613444 useless extension candidates. Maximal degree in co-relation 2571367. Up to 290254 conditions per place. [2023-08-03 15:27:31,365 INFO L140 encePairwiseOnDemand]: 532/551 looper letters, 653 selfloop transitions, 78 changer transitions 0/748 dead transitions. [2023-08-03 15:27:31,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 748 transitions, 8373 flow [2023-08-03 15:27:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:27:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:27:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1625 transitions. [2023-08-03 15:27:31,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49153055051421657 [2023-08-03 15:27:31,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1625 transitions. [2023-08-03 15:27:31,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1625 transitions. [2023-08-03 15:27:31,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:27:31,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1625 transitions. [2023-08-03 15:27:31,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.8333333333333) internal successors, (1625), 6 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states 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 15:27:31,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:27:31,371 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:27:31,371 INFO L175 Difference]: Start difference. First operand has 160 places, 321 transitions, 3176 flow. Second operand 6 states and 1625 transitions. [2023-08-03 15:27:31,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 748 transitions, 8373 flow [2023-08-03 15:27:50,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 748 transitions, 8345 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 15:27:50,172 INFO L231 Difference]: Finished difference. Result has 166 places, 363 transitions, 4017 flow [2023-08-03 15:27:50,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4017, PETRI_PLACES=166, PETRI_TRANSITIONS=363} [2023-08-03 15:27:50,172 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 79 predicate places. [2023-08-03 15:27:50,173 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 363 transitions, 4017 flow [2023-08-03 15:27:50,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 15:27:50,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:27:50,173 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:27:50,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 15:27:50,173 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:27:50,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:27:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash 838108653, now seen corresponding path program 6 times [2023-08-03 15:27:50,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:27:50,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706923955] [2023-08-03 15:27:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:27:50,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:27:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:27:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 15:27:50,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:27:50,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706923955] [2023-08-03 15:27:50,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706923955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:27:50,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:27:50,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:27:50,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867073524] [2023-08-03 15:27:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:27:50,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:27:50,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:27:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:27:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:27:50,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 551 [2023-08-03 15:27:50,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 363 transitions, 4017 flow. Second operand has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 15:27:50,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:27:50,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 551 [2023-08-03 15:27:50,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:29:13,135 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1508] L941-36-->L946-6: Formula: (and (= (store |v_#pthreadsMutex_469| |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45| (store (select |v_#pthreadsMutex_469| |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|) (+ |v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45| 4) 0)) |v_#pthreadsMutex_468|) (= (+ |v_t_funThread2of2ForFork0_~i~0#1_44| 1) |v_t_funThread2of2ForFork0_~i~0#1_43|)) InVars {#pthreadsMutex=|v_#pthreadsMutex_469|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_44|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_468|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset_45|, t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base=|v_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base_45|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_43|, t_funThread2of2ForFork0_#t~post41#1=|v_t_funThread2of2ForFork0_#t~post41#1_17|} AuxVars[] AssignedVars[#pthreadsMutex, t_funThread2of2ForFork0_~i~0#1, t_funThread2of2ForFork0_#t~post41#1][346], [t_funThread1of2ForFork0InUse, Black: 1154#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| 4) (+ |~#cache~0.offset| 4)) 1)), Black: 420#(<= |ULTIMATE.start_main_~i~3#1| 1), Black: 1152#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| 4) (+ |~#cache~0.offset| 4)) 1)), 359#true, Black: 1027#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| 4) 4) 1)), Black: 1029#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| 4) 4) 1)), 918#(and (= |~#cache~0.base| 4) (not (= 4 |~#__global_lock~0.base|))), Black: 987#(and (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.base| 4) (= |~#cache~0.offset| 0)), Black: 1162#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#__global_lock~0.offset| 0) (= |~#cache~0.offset| 0)), Black: 908#(and (= |ULTIMATE.start_cache_entry_addref_~entry#1.base| 4) (= |~#__global_lock~0.offset| 0) (<= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (< 3 |~#cache~0.base|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 1161#(and (= 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(= 4 |~#__global_lock~0.base|))), Black: 1177#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0) (= (select (select |#pthreadsMutex| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) 4) 1) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| 0) (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| |~#cache~0.base|)), Black: 369#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 1174#(and (= |t_funThread2of2ForFork0_~i~0#1| 0) (= |t_funThread1of2ForFork0_~i~0#1| 0) (= |~#cache~0.offset| 0)), Black: 407#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 411#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 409#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 735#(and (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), Black: 593#(= (select (select |#memory_int| |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 0), Black: 590#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), Black: 280#(<= |ULTIMATE.start_main_~i~3#1| 0), 73#L941-5true, Black: 737#(and (= |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| 4) (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4))), 522#(<= 2 |ULTIMATE.start_main_~i~3#1|), Black: 733#(and (= |~#cache~0.base| 4) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| 4))), 745#true, 417#true, 28#L957-10true, 206#L946-6true, 1172#(= |~#cache~0.offset| 0)]) [2023-08-03 15:29:13,135 INFO L294 olderBase$Statistics]: this new event has 58 ancestors and is cut-off event [2023-08-03 15:29:13,135 INFO L297 olderBase$Statistics]: existing Event has 52 ancestors and is cut-off event [2023-08-03 15:29:13,135 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-03 15:29:13,135 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-03 15:29:20,555 INFO L124 PetriNetUnfolderBase]: 403456/653870 cut-off events. [2023-08-03 15:29:20,555 INFO L125 PetriNetUnfolderBase]: For 2972909/2976282 co-relation queries the response was YES. [2023-08-03 15:29:25,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749199 conditions, 653870 events. 403456/653870 cut-off events. For 2972909/2976282 co-relation queries the response was YES. Maximal size of possible extension queue 17458. Compared 7004044 event pairs, 162435 based on Foata normal form. 1238/604923 useless extension candidates. Maximal degree in co-relation 2587595. Up to 290258 conditions per place. [2023-08-03 15:29:28,292 INFO L140 encePairwiseOnDemand]: 543/551 looper letters, 693 selfloop transitions, 44 changer transitions 0/754 dead transitions. [2023-08-03 15:29:28,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 754 transitions, 8640 flow [2023-08-03 15:29:28,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:29:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:29:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1696 transitions. [2023-08-03 15:29:28,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130066545674531 [2023-08-03 15:29:28,294 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1696 transitions. [2023-08-03 15:29:28,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1696 transitions. [2023-08-03 15:29:28,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:29:28,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1696 transitions. [2023-08-03 15:29:28,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 282.6666666666667) internal successors, (1696), 6 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 15:29:28,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:29:28,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states 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 15:29:28,298 INFO L175 Difference]: Start difference. First operand has 166 places, 363 transitions, 4017 flow. Second operand 6 states and 1696 transitions. [2023-08-03 15:29:28,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 754 transitions, 8640 flow Received shutdown request... [2023-08-03 15:29:34,135 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 15:29:35,148 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 15:29:36,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 15:29:36,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-03 15:29:36,443 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-03 15:29:36,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 15:29:36,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 15:29:36,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 15:29:36,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-03 15:29:36,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 15:29:36,444 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:29:36,447 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:29:36,447 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:29:36,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:29:36 BasicIcfg [2023-08-03 15:29:36,450 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:29:36,450 INFO L158 Benchmark]: Toolchain (without parser) took 640980.84ms. Allocated memory was 348.1MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 289.2MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. [2023-08-03 15:29:36,450 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 296.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:29:36,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.50ms. Allocated memory was 348.1MB in the beginning and 492.8MB in the end (delta: 144.7MB). Free memory was 288.9MB in the beginning and 452.4MB in the end (delta: -163.5MB). Peak memory consumption was 27.6MB. Max. memory is 16.0GB. [2023-08-03 15:29:36,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.67ms. Allocated memory is still 492.8MB. Free memory was 452.4MB in the beginning and 449.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 15:29:36,451 INFO L158 Benchmark]: Boogie Preprocessor took 42.10ms. Allocated memory is still 492.8MB. Free memory was 449.2MB in the beginning and 447.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:29:36,451 INFO L158 Benchmark]: RCFGBuilder took 435.17ms. Allocated memory is still 492.8MB. Free memory was 447.1MB in the beginning and 424.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 15:29:36,452 INFO L158 Benchmark]: TraceAbstraction took 639853.78ms. Allocated memory was 492.8MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 424.0MB in the beginning and 8.3GB in the end (delta: -7.8GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. [2023-08-03 15:29:36,453 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 296.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 589.50ms. Allocated memory was 348.1MB in the beginning and 492.8MB in the end (delta: 144.7MB). Free memory was 288.9MB in the beginning and 452.4MB in the end (delta: -163.5MB). Peak memory consumption was 27.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.67ms. Allocated memory is still 492.8MB. Free memory was 452.4MB in the beginning and 449.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.10ms. Allocated memory is still 492.8MB. Free memory was 449.2MB in the beginning and 447.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 435.17ms. Allocated memory is still 492.8MB. Free memory was 447.1MB in the beginning and 424.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 639853.78ms. Allocated memory was 492.8MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 424.0MB in the beginning and 8.3GB in the end (delta: -7.8GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 197 PlacesBefore, 63 PlacesAfterwards, 238 TransitionsBefore, 96 TransitionsAfterwards, 19044 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 123 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 23 ConcurrentYvCompositions, 8 ChoiceCompositions, 181 TotalNumberOfCompositions, 28154 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13973, independent: 13628, independent conditional: 0, independent unconditional: 13628, dependent: 345, dependent conditional: 0, dependent unconditional: 345, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9107, independent: 9002, independent conditional: 0, independent unconditional: 9002, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13973, independent: 4626, independent conditional: 0, independent unconditional: 4626, dependent: 240, dependent conditional: 0, dependent unconditional: 240, unknown: 9107, unknown conditional: 0, unknown unconditional: 9107] , Statistics on independence cache: Total cache size (in pairs): 340, Positive cache size: 296, Positive conditional cache size: 0, Positive unconditional cache size: 296, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 259 PlacesBefore, 87 PlacesAfterwards, 314 TransitionsBefore, 134 TransitionsAfterwards, 49128 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 168 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 34 ConcurrentYvCompositions, 8 ChoiceCompositions, 237 TotalNumberOfCompositions, 84800 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 39372, independent: 38816, independent conditional: 0, independent unconditional: 38816, dependent: 556, dependent conditional: 0, dependent unconditional: 556, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 23574, independent: 23435, independent conditional: 0, independent unconditional: 23435, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 39372, independent: 15381, independent conditional: 0, independent unconditional: 15381, dependent: 417, dependent conditional: 0, dependent unconditional: 417, unknown: 23574, unknown conditional: 0, unknown unconditional: 23574] , Statistics on independence cache: Total cache size (in pairs): 961, Positive cache size: 894, Positive conditional cache size: 0, Positive unconditional cache size: 894, Negative cache size: 67, Negative conditional cache size: 0, Negative unconditional cache size: 67, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 929]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 929]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 929]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 954]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 255 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 627 IncrementalHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 2 mSDtfsCounter, 627 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 13/46 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 2 thread instances CFG has 4 procedures, 311 locations, 6 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: 634.4s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 603.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 35 mSolverCounterUnknown, 4823 SdHoareTripleChecker+Valid, 72.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4060 mSDsluCounter, 690 SdHoareTripleChecker+Invalid, 71.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 331 IncrementalHoareTripleChecker+Unchecked, 567 mSDsCounter, 462 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9962 IncrementalHoareTripleChecker+Invalid, 10790 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 462 mSolverCounterUnsat, 123 mSDtfsCounter, 9962 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4017occurred in iteration=14, InterpolantAutomatonStates: 85, 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, 24.4s InterpolantComputationTime, 517 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 562 ConstructedInterpolants, 43 QuantifiedInterpolants, 4597 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1492 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 28 InterpolantComputations, 11 PerfectInterpolantSequences, 991/1051 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