/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:45:43,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:45:43,832 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:45:43,839 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:45:43,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:45:43,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:45:43,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:45:43,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:45:43,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:45:43,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:45:43,882 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:45:43,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:45:43,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:45:43,883 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:45:43,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:45:43,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:45:43,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:45:43,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:45:43,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:45:43,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:45:43,885 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:45:43,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:45:43,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:45:43,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:45:43,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:45:43,890 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:45:43,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:45:43,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:45:43,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:45:43,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:45:43,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:45:43,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:45:43,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:45:43,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:45:43,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:45:43,892 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:45:44,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:45:44,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:45:44,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:45:44,228 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:45:44,229 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:45:44,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-08-26 12:45:45,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:45:45,826 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:45:45,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-08-26 12:45:45,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86789f182/69883405b62a4ef2a991e5642be054fc/FLAGa0738c866 [2023-08-26 12:45:45,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86789f182/69883405b62a4ef2a991e5642be054fc [2023-08-26 12:45:45,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:45:45,873 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:45:45,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:45:45,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:45:45,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:45:45,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:45:45" (1/1) ... [2023-08-26 12:45:45,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c776674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:45, skipping insertion in model container [2023-08-26 12:45:45,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:45:45" (1/1) ... [2023-08-26 12:45:45,937 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:45:46,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:45:46,345 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:45:46,358 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:45:46,360 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:45:46,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:45:46,455 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:45:46,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46 WrapperNode [2023-08-26 12:45:46,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:45:46,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:45:46,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:45:46,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:45:46,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,513 INFO L138 Inliner]: procedures = 271, calls = 57, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 212 [2023-08-26 12:45:46,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:45:46,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:45:46,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:45:46,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:45:46,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:45:46,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:45:46,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:45:46,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:45:46,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (1/1) ... [2023-08-26 12:45:46,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:45:46,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:45:46,577 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) [2023-08-26 12:45:46,612 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 [2023-08-26 12:45:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:45:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:45:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:45:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:45:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:45:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:45:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:45:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:45:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:45:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:45:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:45:46,628 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:45:46,746 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:45:46,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:45:47,067 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:45:47,079 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:45:47,080 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-26 12:45:47,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:45:47 BoogieIcfgContainer [2023-08-26 12:45:47,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:45:47,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:45:47,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:45:47,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:45:47,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:45:45" (1/3) ... [2023-08-26 12:45:47,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a569bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:45:47, skipping insertion in model container [2023-08-26 12:45:47,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:45:46" (2/3) ... [2023-08-26 12:45:47,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a569bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:45:47, skipping insertion in model container [2023-08-26 12:45:47,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:45:47" (3/3) ... [2023-08-26 12:45:47,088 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2023-08-26 12:45:47,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:45:47,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-26 12:45:47,104 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:45:47,187 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 12:45:47,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 235 transitions, 478 flow [2023-08-26 12:45:47,380 INFO L124 PetriNetUnfolderBase]: 46/325 cut-off events. [2023-08-26 12:45:47,380 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:45:47,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 325 events. 46/325 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1234 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2023-08-26 12:45:47,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 235 transitions, 478 flow [2023-08-26 12:45:47,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 233 transitions, 474 flow [2023-08-26 12:45:47,407 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:45:47,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 233 transitions, 474 flow [2023-08-26 12:45:47,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 233 transitions, 474 flow [2023-08-26 12:45:47,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 233 transitions, 474 flow [2023-08-26 12:45:47,476 INFO L124 PetriNetUnfolderBase]: 45/323 cut-off events. [2023-08-26 12:45:47,476 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:45:47,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 323 events. 45/323 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1248 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2023-08-26 12:45:47,489 INFO L119 LiptonReduction]: Number of co-enabled transitions 13632 [2023-08-26 12:45:54,331 INFO L134 LiptonReduction]: Checked pairs total: 31784 [2023-08-26 12:45:54,331 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-26 12:45:54,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:45:54,347 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70619e9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:45:54,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-26 12:45:54,349 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:45:54,350 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 12:45:54,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:45:54,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:45:54,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:45:54,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-08-26 12:45:54,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:45:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash 29420, now seen corresponding path program 1 times [2023-08-26 12:45:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:45:54,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897574585] [2023-08-26 12:45:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:45:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:45:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:45:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:45:54,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:45:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897574585] [2023-08-26 12:45:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897574585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:45:54,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:45:54,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:45:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065021219] [2023-08-26 12:45:54,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:45:54,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:45:54,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:45:54,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:45:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:45:54,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 463 [2023-08-26 12:45:54,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 89 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:54,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:45:54,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 463 [2023-08-26 12:45:54,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:45:55,078 INFO L124 PetriNetUnfolderBase]: 616/1316 cut-off events. [2023-08-26 12:45:55,078 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:45:55,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 1316 events. 616/1316 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8300 event pairs, 442 based on Foata normal form. 100/967 useless extension candidates. Maximal degree in co-relation 2483. Up to 1168 conditions per place. [2023-08-26 12:45:55,089 INFO L140 encePairwiseOnDemand]: 433/463 looper letters, 73 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-26 12:45:55,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 330 flow [2023-08-26 12:45:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:45:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:45:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-26 12:45:55,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43700503959683223 [2023-08-26 12:45:55,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-26 12:45:55,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-26 12:45:55,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:45:55,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-26 12:45:55,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,126 INFO L175 Difference]: Start difference. First operand has 69 places, 89 transitions, 186 flow. Second operand 3 states and 607 transitions. [2023-08-26 12:45:55,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 330 flow [2023-08-26 12:45:55,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:45:55,132 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 144 flow [2023-08-26 12:45:55,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-08-26 12:45:55,136 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-08-26 12:45:55,136 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 144 flow [2023-08-26 12:45:55,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:45:55,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:45:55,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:45:55,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-08-26 12:45:55,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:45:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash 29422, now seen corresponding path program 1 times [2023-08-26 12:45:55,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:45:55,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100642154] [2023-08-26 12:45:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:45:55,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:45:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:45:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:45:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:45:55,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100642154] [2023-08-26 12:45:55,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100642154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:45:55,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:45:55,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:45:55,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042769616] [2023-08-26 12:45:55,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:45:55,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:45:55,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:45:55,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:45:55,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:45:55,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 463 [2023-08-26 12:45:55,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:45:55,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 463 [2023-08-26 12:45:55,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:45:55,428 INFO L124 PetriNetUnfolderBase]: 622/1310 cut-off events. [2023-08-26 12:45:55,428 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 12:45:55,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1310 events. 622/1310 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8152 event pairs, 552 based on Foata normal form. 0/873 useless extension candidates. Maximal degree in co-relation 2594. Up to 1158 conditions per place. [2023-08-26 12:45:55,436 INFO L140 encePairwiseOnDemand]: 459/463 looper letters, 70 selfloop transitions, 2 changer transitions 3/84 dead transitions. [2023-08-26 12:45:55,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 336 flow [2023-08-26 12:45:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:45:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:45:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-26 12:45:55,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42044636429085674 [2023-08-26 12:45:55,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-26 12:45:55,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-26 12:45:55,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:45:55,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-26 12:45:55,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,445 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 144 flow. Second operand 3 states and 584 transitions. [2023-08-26 12:45:55,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 336 flow [2023-08-26 12:45:55,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:45:55,448 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 140 flow [2023-08-26 12:45:55,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-26 12:45:55,449 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-08-26 12:45:55,449 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 140 flow [2023-08-26 12:45:55,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:55,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:45:55,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:45:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:45:55,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-08-26 12:45:55,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:45:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash 877145559, now seen corresponding path program 1 times [2023-08-26 12:45:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:45:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180181197] [2023-08-26 12:45:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:45:55,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:45:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:45:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:45:55,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:45:55,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180181197] [2023-08-26 12:45:55,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180181197] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 12:45:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038278712] [2023-08-26 12:45:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:45:55,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:45:55,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:45:55,618 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) [2023-08-26 12:45:55,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 12:45:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:45:55,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 12:45:55,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 12:45:55,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 116 [2023-08-26 12:45:55,912 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 106 [2023-08-26 12:45:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:45:55,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 12:45:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:45:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038278712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 12:45:56,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 12:45:56,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 7 [2023-08-26 12:45:56,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060317870] [2023-08-26 12:45:56,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 12:45:56,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 12:45:56,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:45:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 12:45:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-26 12:45:56,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 463 [2023-08-26 12:45:56,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 140 flow. Second operand has 9 states, 9 states have (on average 165.66666666666666) internal successors, (1491), 9 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:45:56,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 463 [2023-08-26 12:45:56,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:45:56,172 INFO L124 PetriNetUnfolderBase]: 43/137 cut-off events. [2023-08-26 12:45:56,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:45:56,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 137 events. 43/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 574 event pairs, 0 based on Foata normal form. 22/138 useless extension candidates. Maximal degree in co-relation 291. Up to 86 conditions per place. [2023-08-26 12:45:56,174 INFO L140 encePairwiseOnDemand]: 459/463 looper letters, 45 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-26 12:45:56,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 209 flow [2023-08-26 12:45:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:45:56,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:45:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-26 12:45:56,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806695464362851 [2023-08-26 12:45:56,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-26 12:45:56,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-26 12:45:56,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:45:56,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-26 12:45:56,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,184 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,184 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 140 flow. Second operand 4 states and 705 transitions. [2023-08-26 12:45:56,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 209 flow [2023-08-26 12:45:56,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:45:56,186 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 72 flow [2023-08-26 12:45:56,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-26 12:45:56,186 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -32 predicate places. [2023-08-26 12:45:56,187 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 72 flow [2023-08-26 12:45:56,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.66666666666666) internal successors, (1491), 9 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:45:56,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:45:56,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 12:45:56,394 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 [2023-08-26 12:45:56,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-08-26 12:45:56,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:45:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1421680632, now seen corresponding path program 1 times [2023-08-26 12:45:56,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:45:56,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844282514] [2023-08-26 12:45:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:45:56,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:45:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:45:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:45:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:45:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844282514] [2023-08-26 12:45:56,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844282514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:45:56,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:45:56,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:45:56,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729605608] [2023-08-26 12:45:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:45:56,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:45:56,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:45:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:45:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:45:56,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 463 [2023-08-26 12:45:56,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:45:56,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 463 [2023-08-26 12:45:56,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:45:56,600 INFO L124 PetriNetUnfolderBase]: 43/116 cut-off events. [2023-08-26 12:45:56,600 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 12:45:56,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 116 events. 43/116 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 341 event pairs, 40 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 244. Up to 105 conditions per place. [2023-08-26 12:45:56,601 INFO L140 encePairwiseOnDemand]: 459/463 looper letters, 23 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-26 12:45:56,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 114 flow [2023-08-26 12:45:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:45:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:45:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-26 12:45:56,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36285097192224625 [2023-08-26 12:45:56,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-26 12:45:56,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-26 12:45:56,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:45:56,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-26 12:45:56,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,609 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 72 flow. Second operand 3 states and 504 transitions. [2023-08-26 12:45:56,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 114 flow [2023-08-26 12:45:56,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:45:56,610 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 65 flow [2023-08-26 12:45:56,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-26 12:45:56,611 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -35 predicate places. [2023-08-26 12:45:56,611 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 65 flow [2023-08-26 12:45:56,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:45:56,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:45:56,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 12:45:56,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:45:56,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-08-26 12:45:56,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:45:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1421709246, now seen corresponding path program 1 times [2023-08-26 12:45:56,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:45:56,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279131627] [2023-08-26 12:45:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:45:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:45:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 12:45:56,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 12:45:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 12:45:56,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 12:45:56,652 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 12:45:56,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2023-08-26 12:45:56,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 38 remaining) [2023-08-26 12:45:56,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 38 remaining) [2023-08-26 12:45:56,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 38 remaining) [2023-08-26 12:45:56,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 38 remaining) [2023-08-26 12:45:56,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 38 remaining) [2023-08-26 12:45:56,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 38 remaining) [2023-08-26 12:45:56,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 38 remaining) [2023-08-26 12:45:56,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 38 remaining) [2023-08-26 12:45:56,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 38 remaining) [2023-08-26 12:45:56,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 38 remaining) [2023-08-26 12:45:56,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 38 remaining) [2023-08-26 12:45:56,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 38 remaining) [2023-08-26 12:45:56,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 38 remaining) [2023-08-26 12:45:56,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 38 remaining) [2023-08-26 12:45:56,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONASSERT (22 of 38 remaining) [2023-08-26 12:45:56,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 38 remaining) [2023-08-26 12:45:56,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 38 remaining) [2023-08-26 12:45:56,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 38 remaining) [2023-08-26 12:45:56,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 38 remaining) [2023-08-26 12:45:56,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 38 remaining) [2023-08-26 12:45:56,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 38 remaining) [2023-08-26 12:45:56,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 38 remaining) [2023-08-26 12:45:56,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 38 remaining) [2023-08-26 12:45:56,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 38 remaining) [2023-08-26 12:45:56,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 38 remaining) [2023-08-26 12:45:56,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (11 of 38 remaining) [2023-08-26 12:45:56,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 38 remaining) [2023-08-26 12:45:56,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 38 remaining) [2023-08-26 12:45:56,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 38 remaining) [2023-08-26 12:45:56,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 38 remaining) [2023-08-26 12:45:56,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 38 remaining) [2023-08-26 12:45:56,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 38 remaining) [2023-08-26 12:45:56,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 38 remaining) [2023-08-26 12:45:56,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 38 remaining) [2023-08-26 12:45:56,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 38 remaining) [2023-08-26 12:45:56,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 38 remaining) [2023-08-26 12:45:56,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (0 of 38 remaining) [2023-08-26 12:45:56,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:45:56,663 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 12:45:56,665 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 12:45:56,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 12:45:56,696 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 12:45:56,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 308 transitions, 634 flow [2023-08-26 12:45:56,753 INFO L124 PetriNetUnfolderBase]: 77/515 cut-off events. [2023-08-26 12:45:56,753 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 12:45:56,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 515 events. 77/515 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2304 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 327. Up to 12 conditions per place. [2023-08-26 12:45:56,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 308 transitions, 634 flow [2023-08-26 12:45:56,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 306 transitions, 630 flow [2023-08-26 12:45:56,764 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:45:56,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 306 transitions, 630 flow [2023-08-26 12:45:56,764 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 306 transitions, 630 flow [2023-08-26 12:45:56,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 306 transitions, 630 flow [2023-08-26 12:45:56,814 INFO L124 PetriNetUnfolderBase]: 76/513 cut-off events. [2023-08-26 12:45:56,814 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 12:45:56,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 513 events. 76/513 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2333 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2023-08-26 12:45:56,839 INFO L119 LiptonReduction]: Number of co-enabled transitions 38908 [2023-08-26 12:46:03,592 INFO L134 LiptonReduction]: Checked pairs total: 94786 [2023-08-26 12:46:03,593 INFO L136 LiptonReduction]: Total number of compositions: 288 [2023-08-26 12:46:03,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:46:03,595 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70619e9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:46:03,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-08-26 12:46:03,597 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:46:03,597 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 12:46:03,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:46:03,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:46:03,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:46:03,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-08-26 12:46:03,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:46:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 50845, now seen corresponding path program 1 times [2023-08-26 12:46:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:46:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710010941] [2023-08-26 12:46:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:46:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:46:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:03,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:46:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710010941] [2023-08-26 12:46:03,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710010941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:46:03,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:46:03,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:46:03,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991353809] [2023-08-26 12:46:03,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:46:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:46:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:46:03,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:46:03,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:46:03,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 596 [2023-08-26 12:46:03,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 132 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:03,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:46:03,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 596 [2023-08-26 12:46:03,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:46:06,888 INFO L124 PetriNetUnfolderBase]: 26672/42078 cut-off events. [2023-08-26 12:46:06,888 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-08-26 12:46:06,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81496 conditions, 42078 events. 26672/42078 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 345527 event pairs, 24326 based on Foata normal form. 3464/31327 useless extension candidates. Maximal degree in co-relation 36778. Up to 37712 conditions per place. [2023-08-26 12:46:07,170 INFO L140 encePairwiseOnDemand]: 553/596 looper letters, 115 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-08-26 12:46:07,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 134 transitions, 520 flow [2023-08-26 12:46:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:46:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:46:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-08-26 12:46:07,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658836689038031 [2023-08-26 12:46:07,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-08-26 12:46:07,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-08-26 12:46:07,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:46:07,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-08-26 12:46:07,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:07,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:07,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:07,181 INFO L175 Difference]: Start difference. First operand has 101 places, 132 transitions, 282 flow. Second operand 3 states and 833 transitions. [2023-08-26 12:46:07,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 134 transitions, 520 flow [2023-08-26 12:46:07,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 134 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:46:07,187 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 204 flow [2023-08-26 12:46:07,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2023-08-26 12:46:07,191 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -8 predicate places. [2023-08-26 12:46:07,191 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 204 flow [2023-08-26 12:46:07,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:07,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:46:07,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:46:07,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:46:07,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-08-26 12:46:07,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:46:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash 50847, now seen corresponding path program 1 times [2023-08-26 12:46:07,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:46:07,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867031251] [2023-08-26 12:46:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:07,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:46:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:46:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:07,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:46:07,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867031251] [2023-08-26 12:46:07,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867031251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:46:07,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:46:07,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:46:07,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184422204] [2023-08-26 12:46:07,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:46:07,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:46:07,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:46:07,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:46:07,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:46:07,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 596 [2023-08-26 12:46:07,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:07,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:46:07,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 596 [2023-08-26 12:46:07,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:46:09,524 INFO L124 PetriNetUnfolderBase]: 23025/37964 cut-off events. [2023-08-26 12:46:09,524 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2023-08-26 12:46:09,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72784 conditions, 37964 events. 23025/37964 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 1753. Compared 326385 event pairs, 10545 based on Foata normal form. 0/27334 useless extension candidates. Maximal degree in co-relation 69505. Up to 34152 conditions per place. [2023-08-26 12:46:09,734 INFO L140 encePairwiseOnDemand]: 592/596 looper letters, 92 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-26 12:46:09,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 114 transitions, 438 flow [2023-08-26 12:46:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:46:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:46:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 732 transitions. [2023-08-26 12:46:09,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40939597315436244 [2023-08-26 12:46:09,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 732 transitions. [2023-08-26 12:46:09,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 732 transitions. [2023-08-26 12:46:09,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:46:09,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 732 transitions. [2023-08-26 12:46:09,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:09,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:09,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:09,743 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 204 flow. Second operand 3 states and 732 transitions. [2023-08-26 12:46:09,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 114 transitions, 438 flow [2023-08-26 12:46:09,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 114 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:46:09,792 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 214 flow [2023-08-26 12:46:09,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2023-08-26 12:46:09,794 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -7 predicate places. [2023-08-26 12:46:09,794 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 214 flow [2023-08-26 12:46:09,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:09,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:46:09,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:46:09,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:46:09,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-08-26 12:46:09,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:46:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash -247981129, now seen corresponding path program 1 times [2023-08-26 12:46:09,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:46:09,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458017710] [2023-08-26 12:46:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:09,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:46:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:46:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:09,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:46:09,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458017710] [2023-08-26 12:46:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458017710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:46:09,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:46:09,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:46:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128308430] [2023-08-26 12:46:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:46:09,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:46:09,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:46:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:46:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:46:09,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 596 [2023-08-26 12:46:09,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:09,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:46:09,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 596 [2023-08-26 12:46:09,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:46:11,699 INFO L124 PetriNetUnfolderBase]: 20222/31910 cut-off events. [2023-08-26 12:46:11,699 INFO L125 PetriNetUnfolderBase]: For 922/922 co-relation queries the response was YES. [2023-08-26 12:46:11,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62771 conditions, 31910 events. 20222/31910 cut-off events. For 922/922 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 252357 event pairs, 18212 based on Foata normal form. 2575/23639 useless extension candidates. Maximal degree in co-relation 62633. Up to 28335 conditions per place. [2023-08-26 12:46:11,888 INFO L140 encePairwiseOnDemand]: 588/596 looper letters, 104 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-26 12:46:11,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 123 transitions, 488 flow [2023-08-26 12:46:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:46:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:46:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 905 transitions. [2023-08-26 12:46:11,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37961409395973156 [2023-08-26 12:46:11,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 905 transitions. [2023-08-26 12:46:11,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 905 transitions. [2023-08-26 12:46:11,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:46:11,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 905 transitions. [2023-08-26 12:46:11,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.25) internal successors, (905), 4 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:11,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 596.0) internal successors, (2980), 5 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:11,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 596.0) internal successors, (2980), 5 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:11,899 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 214 flow. Second operand 4 states and 905 transitions. [2023-08-26 12:46:11,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 123 transitions, 488 flow [2023-08-26 12:46:11,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 123 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:46:11,904 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 204 flow [2023-08-26 12:46:11,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2023-08-26 12:46:11,906 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -11 predicate places. [2023-08-26 12:46:11,906 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 204 flow [2023-08-26 12:46:11,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:11,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:46:11,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:46:11,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:46:11,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-08-26 12:46:11,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:46:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash -248372130, now seen corresponding path program 1 times [2023-08-26 12:46:11,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:46:11,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557998826] [2023-08-26 12:46:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:46:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:46:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:46:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557998826] [2023-08-26 12:46:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557998826] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 12:46:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239142492] [2023-08-26 12:46:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:12,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:46:12,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:46:12,057 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) [2023-08-26 12:46:12,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 12:46:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:46:12,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 12:46:12,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 12:46:12,257 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-26 12:46:12,257 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 141 [2023-08-26 12:46:12,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 122 [2023-08-26 12:46:12,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 116 [2023-08-26 12:46:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:12,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 12:46:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239142492] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 12:46:12,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 12:46:12,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-26 12:46:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348652903] [2023-08-26 12:46:12,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 12:46:12,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 12:46:12,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:46:12,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 12:46:12,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 12:46:12,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 596 [2023-08-26 12:46:12,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 213.875) internal successors, (1711), 8 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:12,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:46:12,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 596 [2023-08-26 12:46:12,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:46:14,035 INFO L124 PetriNetUnfolderBase]: 15551/25599 cut-off events. [2023-08-26 12:46:14,035 INFO L125 PetriNetUnfolderBase]: For 770/770 co-relation queries the response was YES. [2023-08-26 12:46:14,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50587 conditions, 25599 events. 15551/25599 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 1230. Compared 213940 event pairs, 333 based on Foata normal form. 19/18640 useless extension candidates. Maximal degree in co-relation 48209. Up to 20883 conditions per place. [2023-08-26 12:46:14,216 INFO L140 encePairwiseOnDemand]: 592/596 looper letters, 149 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2023-08-26 12:46:14,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 173 transitions, 682 flow [2023-08-26 12:46:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:46:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:46:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1216 transitions. [2023-08-26 12:46:14,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080536912751678 [2023-08-26 12:46:14,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1216 transitions. [2023-08-26 12:46:14,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1216 transitions. [2023-08-26 12:46:14,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:46:14,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1216 transitions. [2023-08-26 12:46:14,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:14,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:14,231 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:14,231 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 204 flow. Second operand 5 states and 1216 transitions. [2023-08-26 12:46:14,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 173 transitions, 682 flow [2023-08-26 12:46:14,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 173 transitions, 679 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:46:14,267 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 205 flow [2023-08-26 12:46:14,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2023-08-26 12:46:14,269 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -10 predicate places. [2023-08-26 12:46:14,269 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 205 flow [2023-08-26 12:46:14,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 213.875) internal successors, (1711), 8 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:14,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:46:14,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:46:14,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 12:46:14,478 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,SelfDestructingSolverStorable8 [2023-08-26 12:46:14,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr10ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-08-26 12:46:14,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:46:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash 902512208, now seen corresponding path program 1 times [2023-08-26 12:46:14,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:46:14,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507913622] [2023-08-26 12:46:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:46:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:46:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:14,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:46:14,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507913622] [2023-08-26 12:46:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507913622] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:46:14,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:46:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:46:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829169053] [2023-08-26 12:46:14,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:46:14,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:46:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:46:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:46:14,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:46:14,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 596 [2023-08-26 12:46:14,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:14,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:46:14,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 596 [2023-08-26 12:46:14,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:46:16,655 INFO L124 PetriNetUnfolderBase]: 22783/36697 cut-off events. [2023-08-26 12:46:16,655 INFO L125 PetriNetUnfolderBase]: For 2821/2821 co-relation queries the response was YES. [2023-08-26 12:46:16,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73962 conditions, 36697 events. 22783/36697 cut-off events. For 2821/2821 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 306943 event pairs, 7304 based on Foata normal form. 0/25434 useless extension candidates. Maximal degree in co-relation 35341. Up to 23005 conditions per place. [2023-08-26 12:46:17,093 INFO L140 encePairwiseOnDemand]: 583/596 looper letters, 161 selfloop transitions, 14 changer transitions 0/192 dead transitions. [2023-08-26 12:46:17,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 192 transitions, 808 flow [2023-08-26 12:46:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:46:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:46:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 945 transitions. [2023-08-26 12:46:17,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963926174496644 [2023-08-26 12:46:17,097 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 945 transitions. [2023-08-26 12:46:17,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 945 transitions. [2023-08-26 12:46:17,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:46:17,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 945 transitions. [2023-08-26 12:46:17,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:17,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 596.0) internal successors, (2980), 5 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:17,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 596.0) internal successors, (2980), 5 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:17,103 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 205 flow. Second operand 4 states and 945 transitions. [2023-08-26 12:46:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 192 transitions, 808 flow [2023-08-26 12:46:17,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 192 transitions, 786 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-26 12:46:17,108 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 306 flow [2023-08-26 12:46:17,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-08-26 12:46:17,109 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -7 predicate places. [2023-08-26 12:46:17,109 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 306 flow [2023-08-26 12:46:17,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:17,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:46:17,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:46:17,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:46:17,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-08-26 12:46:17,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:46:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 902512042, now seen corresponding path program 1 times [2023-08-26 12:46:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:46:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768478132] [2023-08-26 12:46:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:46:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:46:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:17,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:46:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768478132] [2023-08-26 12:46:17,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768478132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:46:17,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:46:17,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:46:17,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6649460] [2023-08-26 12:46:17,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:46:17,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:46:17,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:46:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:46:17,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:46:17,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 596 [2023-08-26 12:46:17,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:17,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:46:17,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 596 [2023-08-26 12:46:17,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:46:18,604 INFO L124 PetriNetUnfolderBase]: 13578/22720 cut-off events. [2023-08-26 12:46:18,604 INFO L125 PetriNetUnfolderBase]: For 6874/6885 co-relation queries the response was YES. [2023-08-26 12:46:18,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51208 conditions, 22720 events. 13578/22720 cut-off events. For 6874/6885 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 181418 event pairs, 11184 based on Foata normal form. 2643/22514 useless extension candidates. Maximal degree in co-relation 23039. Up to 19882 conditions per place. [2023-08-26 12:46:18,701 INFO L140 encePairwiseOnDemand]: 572/596 looper letters, 93 selfloop transitions, 19 changer transitions 2/131 dead transitions. [2023-08-26 12:46:18,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 131 transitions, 644 flow [2023-08-26 12:46:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:46:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:46:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-08-26 12:46:18,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870246085011186 [2023-08-26 12:46:18,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-08-26 12:46:18,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-08-26 12:46:18,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:46:18,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-08-26 12:46:18,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:18,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:18,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:18,710 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 306 flow. Second operand 3 states and 692 transitions. [2023-08-26 12:46:18,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 131 transitions, 644 flow [2023-08-26 12:46:18,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 644 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:46:18,718 INFO L231 Difference]: Finished difference. Result has 98 places, 114 transitions, 506 flow [2023-08-26 12:46:18,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=98, PETRI_TRANSITIONS=114} [2023-08-26 12:46:18,719 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2023-08-26 12:46:18,719 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 114 transitions, 506 flow [2023-08-26 12:46:18,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:18,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:46:18,719 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 12:46:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 12:46:18,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-08-26 12:46:18,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:46:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1395582298, now seen corresponding path program 1 times [2023-08-26 12:46:18,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:46:18,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409545097] [2023-08-26 12:46:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:18,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:46:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 12:46:18,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 12:46:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 12:46:18,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 12:46:18,748 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 12:46:18,748 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2023-08-26 12:46:18,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 49 remaining) [2023-08-26 12:46:18,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 49 remaining) [2023-08-26 12:46:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONASSERT (33 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 49 remaining) [2023-08-26 12:46:18,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (22 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 49 remaining) [2023-08-26 12:46:18,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (11 of 49 remaining) [2023-08-26 12:46:18,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 49 remaining) [2023-08-26 12:46:18,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 49 remaining) [2023-08-26 12:46:18,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (0 of 49 remaining) [2023-08-26 12:46:18,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 12:46:18,754 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:46:18,755 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 12:46:18,755 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 12:46:18,788 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 12:46:18,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2023-08-26 12:46:18,905 INFO L124 PetriNetUnfolderBase]: 113/742 cut-off events. [2023-08-26 12:46:18,905 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 12:46:18,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 742 events. 113/742 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3607 event pairs, 1 based on Foata normal form. 0/524 useless extension candidates. Maximal degree in co-relation 523. Up to 16 conditions per place. [2023-08-26 12:46:18,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 381 transitions, 792 flow [2023-08-26 12:46:18,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 328 places, 379 transitions, 788 flow [2023-08-26 12:46:18,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:46:18,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 328 places, 379 transitions, 788 flow [2023-08-26 12:46:18,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 328 places, 379 transitions, 788 flow [2023-08-26 12:46:18,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 379 transitions, 788 flow [2023-08-26 12:46:19,042 INFO L124 PetriNetUnfolderBase]: 112/740 cut-off events. [2023-08-26 12:46:19,042 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 12:46:19,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 740 events. 112/740 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3634 event pairs, 1 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 521. Up to 16 conditions per place. [2023-08-26 12:46:19,086 INFO L119 LiptonReduction]: Number of co-enabled transitions 74124 [2023-08-26 12:46:26,418 INFO L134 LiptonReduction]: Checked pairs total: 191022 [2023-08-26 12:46:26,418 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-08-26 12:46:26,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:46:26,420 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70619e9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:46:26,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-26 12:46:26,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:46:26,422 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 12:46:26,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:46:26,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:46:26,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:46:26,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2023-08-26 12:46:26,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:46:26,423 INFO L85 PathProgramCache]: Analyzing trace with hash 76464, now seen corresponding path program 1 times [2023-08-26 12:46:26,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:46:26,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856468482] [2023-08-26 12:46:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:46:26,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:46:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:46:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:46:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:46:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856468482] [2023-08-26 12:46:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856468482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:46:26,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:46:26,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:46:26,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818391619] [2023-08-26 12:46:26,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:46:26,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:46:26,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:46:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:46:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:46:26,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 730 [2023-08-26 12:46:26,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 173 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:46:26,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:46:26,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 730 [2023-08-26 12:46:26,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:47:42,162 INFO L124 PetriNetUnfolderBase]: 872598/1234880 cut-off events. [2023-08-26 12:47:42,162 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2023-08-26 12:47:44,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387218 conditions, 1234880 events. 872598/1234880 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 37994. Compared 11559383 event pairs, 554145 based on Foata normal form. 103854/938003 useless extension candidates. Maximal degree in co-relation 84179. Up to 1148038 conditions per place. [2023-08-26 12:47:51,094 INFO L140 encePairwiseOnDemand]: 674/730 looper letters, 119 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2023-08-26 12:47:51,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 145 transitions, 562 flow [2023-08-26 12:47:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:47:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:47:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 967 transitions. [2023-08-26 12:47:51,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415525114155251 [2023-08-26 12:47:51,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 967 transitions. [2023-08-26 12:47:51,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 967 transitions. [2023-08-26 12:47:51,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:47:51,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 967 transitions. [2023-08-26 12:47:51,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:47:51,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 730.0) internal successors, (2920), 4 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:47:51,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 730.0) internal successors, (2920), 4 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:47:51,129 INFO L175 Difference]: Start difference. First operand has 131 places, 173 transitions, 376 flow. Second operand 3 states and 967 transitions. [2023-08-26 12:47:51,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 145 transitions, 562 flow [2023-08-26 12:47:51,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 145 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:47:51,134 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 286 flow [2023-08-26 12:47:51,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=730, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2023-08-26 12:47:51,135 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -7 predicate places. [2023-08-26 12:47:51,135 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 286 flow [2023-08-26 12:47:51,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:47:51,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:47:51,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:47:51,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 12:47:51,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2023-08-26 12:47:51,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:47:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash 76463, now seen corresponding path program 1 times [2023-08-26 12:47:51,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:47:51,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780132912] [2023-08-26 12:47:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:47:51,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:47:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:47:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:47:51,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:47:51,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780132912] [2023-08-26 12:47:51,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780132912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:47:51,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:47:51,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:47:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609621879] [2023-08-26 12:47:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:47:51,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:47:51,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:47:51,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:47:51,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:47:51,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 730 [2023-08-26 12:47:51,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:47:51,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:47:51,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 730 [2023-08-26 12:47:51,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:49:38,384 INFO L124 PetriNetUnfolderBase]: 1007691/1378531 cut-off events. [2023-08-26 12:49:38,384 INFO L125 PetriNetUnfolderBase]: For 33830/33830 co-relation queries the response was YES. [2023-08-26 12:49:42,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2745607 conditions, 1378531 events. 1007691/1378531 cut-off events. For 33830/33830 co-relation queries the response was YES. Maximal size of possible extension queue 41532. Compared 12159661 event pairs, 932443 based on Foata normal form. 0/897970 useless extension candidates. Maximal degree in co-relation 2745445. Up to 1268801 conditions per place. [2023-08-26 12:49:49,635 INFO L140 encePairwiseOnDemand]: 726/730 looper letters, 166 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2023-08-26 12:49:49,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 187 transitions, 752 flow [2023-08-26 12:49:49,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:49:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:49:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 964 transitions. [2023-08-26 12:49:49,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44018264840182647 [2023-08-26 12:49:49,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 964 transitions. [2023-08-26 12:49:49,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 964 transitions. [2023-08-26 12:49:49,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:49:49,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 964 transitions. [2023-08-26 12:49:49,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:49:49,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 730.0) internal successors, (2920), 4 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:49:49,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 730.0) internal successors, (2920), 4 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:49:49,658 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 286 flow. Second operand 3 states and 964 transitions. [2023-08-26 12:49:49,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 187 transitions, 752 flow [2023-08-26 12:49:49,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 187 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:49:49,695 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 284 flow [2023-08-26 12:49:49,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=730, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2023-08-26 12:49:49,706 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -8 predicate places. [2023-08-26 12:49:49,706 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 284 flow [2023-08-26 12:49:49,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:49:49,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:49:49,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:49:49,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 12:49:49,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2023-08-26 12:49:49,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:49:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1956843492, now seen corresponding path program 1 times [2023-08-26 12:49:49,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:49:49,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308933987] [2023-08-26 12:49:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:49:49,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:49:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:49:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:49:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:49:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308933987] [2023-08-26 12:49:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308933987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:49:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:49:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:49:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595403847] [2023-08-26 12:49:49,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:49:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:49:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:49:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:49:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:49:49,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 730 [2023-08-26 12:49:49,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 241.5) internal successors, (966), 4 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:49:49,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:49:49,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 730 [2023-08-26 12:49:49,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:50:47,163 INFO L124 PetriNetUnfolderBase]: 668478/917061 cut-off events. [2023-08-26 12:50:47,163 INFO L125 PetriNetUnfolderBase]: For 31780/31780 co-relation queries the response was YES. [2023-08-26 12:50:49,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832898 conditions, 917061 events. 668478/917061 cut-off events. For 31780/31780 co-relation queries the response was YES. Maximal size of possible extension queue 27260. Compared 7832338 event pairs, 615865 based on Foata normal form. 57985/671259 useless extension candidates. Maximal degree in co-relation 1751223. Up to 840248 conditions per place. [2023-08-26 12:50:52,177 INFO L140 encePairwiseOnDemand]: 719/730 looper letters, 148 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-08-26 12:50:52,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 169 transitions, 682 flow [2023-08-26 12:50:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:50:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:50:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1127 transitions. [2023-08-26 12:50:52,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38595890410958905 [2023-08-26 12:50:52,179 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1127 transitions. [2023-08-26 12:50:52,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1127 transitions. [2023-08-26 12:50:52,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:50:52,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1127 transitions. [2023-08-26 12:50:52,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:50:52,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 730.0) internal successors, (3650), 5 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:50:52,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 730.0) internal successors, (3650), 5 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:50:52,186 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 284 flow. Second operand 4 states and 1127 transitions. [2023-08-26 12:50:52,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 169 transitions, 682 flow [2023-08-26 12:50:54,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 169 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:50:54,331 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 266 flow [2023-08-26 12:50:54,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=730, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2023-08-26 12:50:54,332 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -16 predicate places. [2023-08-26 12:50:54,332 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 266 flow [2023-08-26 12:50:54,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.5) internal successors, (966), 4 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:50:54,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:50:54,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:50:54,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 12:50:54,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2023-08-26 12:50:54,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:50:54,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1956418758, now seen corresponding path program 1 times [2023-08-26 12:50:54,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:50:54,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826654211] [2023-08-26 12:50:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:50:54,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:50:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:50:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:50:54,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:50:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826654211] [2023-08-26 12:50:54,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826654211] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 12:50:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118160851] [2023-08-26 12:50:54,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:50:54,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:50:54,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:50:54,418 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) [2023-08-26 12:50:54,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 12:50:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:50:54,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 12:50:54,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 12:50:54,542 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 116 [2023-08-26 12:50:54,549 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 106 [2023-08-26 12:50:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:50:54,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 12:50:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:50:54,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118160851] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 12:50:54,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 12:50:54,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 7 [2023-08-26 12:50:54,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086663630] [2023-08-26 12:50:54,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 12:50:54,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 12:50:54,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:50:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 12:50:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-26 12:50:54,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 730 [2023-08-26 12:50:54,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 266 flow. Second operand has 9 states, 9 states have (on average 261.6666666666667) internal successors, (2355), 9 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:50:54,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:50:54,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 730 [2023-08-26 12:50:54,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:51:35,484 INFO L124 PetriNetUnfolderBase]: 486960/699862 cut-off events. [2023-08-26 12:51:35,484 INFO L125 PetriNetUnfolderBase]: For 28634/28634 co-relation queries the response was YES. [2023-08-26 12:51:36,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398685 conditions, 699862 events. 486960/699862 cut-off events. For 28634/28634 co-relation queries the response was YES. Maximal size of possible extension queue 21121. Compared 6551385 event pairs, 19 based on Foata normal form. 19/511422 useless extension candidates. Maximal degree in co-relation 1334914. Up to 583729 conditions per place. [2023-08-26 12:51:39,147 INFO L140 encePairwiseOnDemand]: 726/730 looper letters, 245 selfloop transitions, 6 changer transitions 0/275 dead transitions. [2023-08-26 12:51:39,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 275 transitions, 1098 flow [2023-08-26 12:51:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:51:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:51:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1815 transitions. [2023-08-26 12:51:39,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143835616438356 [2023-08-26 12:51:39,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1815 transitions. [2023-08-26 12:51:39,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1815 transitions. [2023-08-26 12:51:39,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:51:39,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1815 transitions. [2023-08-26 12:51:39,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 302.5) internal successors, (1815), 6 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:51:39,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 730.0) internal successors, (5110), 7 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:51:39,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 730.0) internal successors, (5110), 7 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:51:39,158 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 266 flow. Second operand 6 states and 1815 transitions. [2023-08-26 12:51:39,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 275 transitions, 1098 flow [2023-08-26 12:51:49,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 275 transitions, 1095 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:51:49,428 INFO L231 Difference]: Finished difference. Result has 117 places, 112 transitions, 279 flow [2023-08-26 12:51:49,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=730, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=117, PETRI_TRANSITIONS=112} [2023-08-26 12:51:49,428 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -14 predicate places. [2023-08-26 12:51:49,428 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 112 transitions, 279 flow [2023-08-26 12:51:49,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 261.6666666666667) internal successors, (2355), 9 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:51:49,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:51:49,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:51:49,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 12:51:49,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:51:49,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2023-08-26 12:51:49,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:51:49,630 INFO L85 PathProgramCache]: Analyzing trace with hash 532603050, now seen corresponding path program 1 times [2023-08-26 12:51:49,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:51:49,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268947207] [2023-08-26 12:51:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:51:49,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:51:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:51:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:51:49,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:51:49,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268947207] [2023-08-26 12:51:49,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268947207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:51:49,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:51:49,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:51:49,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804088748] [2023-08-26 12:51:49,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:51:49,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:51:49,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:51:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:51:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:51:49,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 730 [2023-08-26 12:51:49,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:51:49,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:51:49,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 730 [2023-08-26 12:51:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:52:13,650 INFO L124 PetriNetUnfolderBase]: 297370/418308 cut-off events. [2023-08-26 12:52:13,651 INFO L125 PetriNetUnfolderBase]: For 25573/25573 co-relation queries the response was YES. [2023-08-26 12:52:14,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833456 conditions, 418308 events. 297370/418308 cut-off events. For 25573/25573 co-relation queries the response was YES. Maximal size of possible extension queue 11772. Compared 3441188 event pairs, 263026 based on Foata normal form. 0/341451 useless extension candidates. Maximal degree in co-relation 57931. Up to 371038 conditions per place. [2023-08-26 12:52:15,796 INFO L140 encePairwiseOnDemand]: 695/730 looper letters, 116 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2023-08-26 12:52:15,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 155 transitions, 637 flow [2023-08-26 12:52:15,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:52:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:52:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-26 12:52:15,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949771689497717 [2023-08-26 12:52:15,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-26 12:52:15,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-26 12:52:15,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:52:15,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-26 12:52:15,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:52:15,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 730.0) internal successors, (2920), 4 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:52:15,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 730.0) internal successors, (2920), 4 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:52:15,802 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 279 flow. Second operand 3 states and 865 transitions. [2023-08-26 12:52:15,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 155 transitions, 637 flow [2023-08-26 12:52:15,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 155 transitions, 622 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-26 12:52:15,815 INFO L231 Difference]: Finished difference. Result has 118 places, 130 transitions, 446 flow [2023-08-26 12:52:15,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=730, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=118, PETRI_TRANSITIONS=130} [2023-08-26 12:52:15,815 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -13 predicate places. [2023-08-26 12:52:15,815 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 130 transitions, 446 flow [2023-08-26 12:52:15,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:52:15,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:52:15,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:52:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 12:52:15,816 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr10ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2023-08-26 12:52:15,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:52:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash 532603427, now seen corresponding path program 1 times [2023-08-26 12:52:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:52:15,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109202912] [2023-08-26 12:52:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:52:15,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:52:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:52:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:52:15,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:52:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109202912] [2023-08-26 12:52:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109202912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:52:15,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:52:15,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:52:15,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083377501] [2023-08-26 12:52:15,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:52:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:52:15,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:52:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:52:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:52:15,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 730 [2023-08-26 12:52:15,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 130 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:52:15,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:52:15,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 730 [2023-08-26 12:52:15,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:52:53,488 INFO L124 PetriNetUnfolderBase]: 407551/583132 cut-off events. [2023-08-26 12:52:53,488 INFO L125 PetriNetUnfolderBase]: For 105822/105984 co-relation queries the response was YES. [2023-08-26 12:52:54,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347938 conditions, 583132 events. 407551/583132 cut-off events. For 105822/105984 co-relation queries the response was YES. Maximal size of possible extension queue 18541. Compared 5143588 event pairs, 98117 based on Foata normal form. 0/506317 useless extension candidates. Maximal degree in co-relation 1141295. Up to 358003 conditions per place. [2023-08-26 12:52:56,453 INFO L140 encePairwiseOnDemand]: 713/730 looper letters, 239 selfloop transitions, 27 changer transitions 0/285 dead transitions. [2023-08-26 12:52:56,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 285 transitions, 1487 flow [2023-08-26 12:52:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:52:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:52:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2023-08-26 12:52:56,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.401027397260274 [2023-08-26 12:52:56,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2023-08-26 12:52:56,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2023-08-26 12:52:56,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:52:56,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2023-08-26 12:52:56,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:52:56,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 730.0) internal successors, (3650), 5 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:52:56,461 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 730.0) internal successors, (3650), 5 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:52:56,462 INFO L175 Difference]: Start difference. First operand has 118 places, 130 transitions, 446 flow. Second operand 4 states and 1171 transitions. [2023-08-26 12:52:56,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 285 transitions, 1487 flow [2023-08-26 12:53:55,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 285 transitions, 1413 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:53:55,933 INFO L231 Difference]: Finished difference. Result has 122 places, 156 transitions, 673 flow [2023-08-26 12:53:55,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=730, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=122, PETRI_TRANSITIONS=156} [2023-08-26 12:53:55,933 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -9 predicate places. [2023-08-26 12:53:55,933 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 156 transitions, 673 flow [2023-08-26 12:53:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:53:55,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:53:55,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 12:53:55,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 12:53:55,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2023-08-26 12:53:55,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:53:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash -164787659, now seen corresponding path program 1 times [2023-08-26 12:53:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:53:55,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805708720] [2023-08-26 12:53:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:53:55,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:53:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:53:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:53:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:53:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805708720] [2023-08-26 12:53:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805708720] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 12:53:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464170074] [2023-08-26 12:53:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:53:55,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:53:55,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:53:55,984 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) [2023-08-26 12:53:55,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 12:53:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:53:56,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 12:53:56,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 12:53:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:53:56,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 12:53:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:53:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464170074] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 12:53:56,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 12:53:56,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 12:53:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162566366] [2023-08-26 12:53:56,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 12:53:56,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 12:53:56,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:53:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 12:53:56,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-26 12:53:56,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 730 [2023-08-26 12:53:56,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 156 transitions, 673 flow. Second operand has 8 states, 8 states have (on average 314.25) internal successors, (2514), 8 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:53:56,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:53:56,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 730 [2023-08-26 12:53:56,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:53:59,605 INFO L124 PetriNetUnfolderBase]: 35415/54728 cut-off events. [2023-08-26 12:53:59,605 INFO L125 PetriNetUnfolderBase]: For 55752/56466 co-relation queries the response was YES. [2023-08-26 12:53:59,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156326 conditions, 54728 events. 35415/54728 cut-off events. For 55752/56466 co-relation queries the response was YES. Maximal size of possible extension queue 2273. Compared 435458 event pairs, 1469 based on Foata normal form. 4985/56856 useless extension candidates. Maximal degree in co-relation 44828. Up to 35191 conditions per place. [2023-08-26 12:53:59,851 INFO L140 encePairwiseOnDemand]: 727/730 looper letters, 161 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2023-08-26 12:53:59,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 180 transitions, 1106 flow [2023-08-26 12:53:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:53:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:53:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2007 transitions. [2023-08-26 12:53:59,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45821917808219176 [2023-08-26 12:53:59,855 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2007 transitions. [2023-08-26 12:53:59,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2007 transitions. [2023-08-26 12:53:59,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:53:59,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2007 transitions. [2023-08-26 12:53:59,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.5) internal successors, (2007), 6 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:53:59,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 730.0) internal successors, (5110), 7 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:53:59,861 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 730.0) internal successors, (5110), 7 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:53:59,861 INFO L175 Difference]: Start difference. First operand has 122 places, 156 transitions, 673 flow. Second operand 6 states and 2007 transitions. [2023-08-26 12:53:59,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 180 transitions, 1106 flow [2023-08-26 12:53:59,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 180 transitions, 1099 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 12:53:59,873 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 333 flow [2023-08-26 12:53:59,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=730, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-08-26 12:53:59,874 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -49 predicate places. [2023-08-26 12:53:59,874 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 333 flow [2023-08-26 12:53:59,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 314.25) internal successors, (2514), 8 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:53:59,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:53:59,875 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 12:53:59,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 12:54:00,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:54:00,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2023-08-26 12:54:00,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:54:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash -540824596, now seen corresponding path program 1 times [2023-08-26 12:54:00,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:54:00,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542706939] [2023-08-26 12:54:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:54:00,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:54:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 12:54:00,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 12:54:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 12:54:00,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 12:54:00,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 12:54:00,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2023-08-26 12:54:00,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 60 remaining) [2023-08-26 12:54:00,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 60 remaining) [2023-08-26 12:54:00,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 60 remaining) [2023-08-26 12:54:00,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 60 remaining) [2023-08-26 12:54:00,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONASSERT (44 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 60 remaining) [2023-08-26 12:54:00,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (33 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 60 remaining) [2023-08-26 12:54:00,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (22 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 60 remaining) [2023-08-26 12:54:00,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (11 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 60 remaining) [2023-08-26 12:54:00,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 60 remaining) [2023-08-26 12:54:00,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 60 remaining) [2023-08-26 12:54:00,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 60 remaining) [2023-08-26 12:54:00,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONASSERT (0 of 60 remaining) [2023-08-26 12:54:00,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 12:54:00,115 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:54:00,115 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 12:54:00,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 12:54:00,143 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 12:54:00,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 454 transitions, 952 flow [2023-08-26 12:54:00,291 INFO L124 PetriNetUnfolderBase]: 161/1045 cut-off events. [2023-08-26 12:54:00,291 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 12:54:00,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 1045 events. 161/1045 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5439 event pairs, 6 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 762. Up to 32 conditions per place. [2023-08-26 12:54:00,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 390 places, 454 transitions, 952 flow [2023-08-26 12:54:00,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 452 transitions, 948 flow [2023-08-26 12:54:00,323 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:54:00,323 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 452 transitions, 948 flow [2023-08-26 12:54:00,323 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 452 transitions, 948 flow [2023-08-26 12:54:00,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 452 transitions, 948 flow [2023-08-26 12:54:00,470 INFO L124 PetriNetUnfolderBase]: 160/1043 cut-off events. [2023-08-26 12:54:00,470 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 12:54:00,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 1043 events. 160/1043 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5465 event pairs, 6 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 760. Up to 32 conditions per place. [2023-08-26 12:54:00,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 119848 [2023-08-26 12:54:08,875 INFO L134 LiptonReduction]: Checked pairs total: 344417 [2023-08-26 12:54:08,876 INFO L136 LiptonReduction]: Total number of compositions: 419 [2023-08-26 12:54:08,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:54:08,877 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70619e9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:54:08,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2023-08-26 12:54:08,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:54:08,878 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-26 12:54:08,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:54:08,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:54:08,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:54:08,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-08-26 12:54:08,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:54:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash 106728, now seen corresponding path program 1 times [2023-08-26 12:54:08,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:54:08,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038109993] [2023-08-26 12:54:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:54:08,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:54:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:54:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:54:08,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:54:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038109993] [2023-08-26 12:54:08,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038109993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:54:08,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:54:08,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:54:08,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500585863] [2023-08-26 12:54:08,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:54:08,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:54:08,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:54:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:54:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:54:08,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 873 [2023-08-26 12:54:08,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 214 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:54:08,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:54:08,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 873 [2023-08-26 12:54:08,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-26 12:55:38,767 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 [2023-08-26 12:55:39,795 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 [2023-08-26 12:55:41,071 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 71 remaining) [2023-08-26 12:55:41,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 12:55:41,071 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-26 12:55:41,071 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 71 remaining) [2023-08-26 12:55:41,071 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 71 remaining) [2023-08-26 12:55:41,072 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 71 remaining) [2023-08-26 12:55:41,072 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 71 remaining) [2023-08-26 12:55:41,072 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 71 remaining) [2023-08-26 12:55:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 71 remaining) [2023-08-26 12:55:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 71 remaining) [2023-08-26 12:55:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 71 remaining) [2023-08-26 12:55:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 71 remaining) [2023-08-26 12:55:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 71 remaining) [2023-08-26 12:55:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 71 remaining) [2023-08-26 12:55:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 71 remaining) [2023-08-26 12:55:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 71 remaining) [2023-08-26 12:55:41,075 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONASSERT (56 of 71 remaining) [2023-08-26 12:55:41,076 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (55 of 71 remaining) [2023-08-26 12:55:41,076 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 71 remaining) [2023-08-26 12:55:41,076 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 71 remaining) [2023-08-26 12:55:41,076 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 71 remaining) [2023-08-26 12:55:41,076 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 71 remaining) [2023-08-26 12:55:41,077 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 71 remaining) [2023-08-26 12:55:41,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 71 remaining) [2023-08-26 12:55:41,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 71 remaining) [2023-08-26 12:55:41,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 71 remaining) [2023-08-26 12:55:41,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 71 remaining) [2023-08-26 12:55:41,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 71 remaining) [2023-08-26 12:55:41,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr10ASSERT_VIOLATIONASSERT (44 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 71 remaining) [2023-08-26 12:55:41,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr10ASSERT_VIOLATIONASSERT (33 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 71 remaining) [2023-08-26 12:55:41,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 71 remaining) [2023-08-26 12:55:41,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 71 remaining) [2023-08-26 12:55:41,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 71 remaining) [2023-08-26 12:55:41,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr10ASSERT_VIOLATIONASSERT (22 of 71 remaining) [2023-08-26 12:55:41,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 71 remaining) [2023-08-26 12:55:41,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 71 remaining) [2023-08-26 12:55:41,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 71 remaining) [2023-08-26 12:55:41,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr10ASSERT_VIOLATIONASSERT (11 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 71 remaining) [2023-08-26 12:55:41,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 71 remaining) [2023-08-26 12:55:41,084 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 71 remaining) [2023-08-26 12:55:41,084 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 71 remaining) [2023-08-26 12:55:41,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 71 remaining) [2023-08-26 12:55:41,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 71 remaining) [2023-08-26 12:55:41,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 71 remaining) [2023-08-26 12:55:41,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 71 remaining) [2023-08-26 12:55:41,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr10ASSERT_VIOLATIONASSERT (0 of 71 remaining) [2023-08-26 12:55:41,085 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 12:55:41,092 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2023-08-26 12:55:41,092 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:55:41,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:55:41 BasicIcfg [2023-08-26 12:55:41,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:55:41,109 INFO L158 Benchmark]: Toolchain (without parser) took 595235.64ms. Allocated memory was 383.8MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 358.0MB in the beginning and 8.2GB in the end (delta: -7.9GB). Peak memory consumption was 9.4GB. Max. memory is 16.0GB. [2023-08-26 12:55:41,110 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 383.8MB. Free memory was 361.1MB in the beginning and 361.1MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:55:41,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.36ms. Allocated memory is still 383.8MB. Free memory was 357.7MB in the beginning and 328.6MB in the end (delta: 29.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-26 12:55:41,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.70ms. Allocated memory is still 383.8MB. Free memory was 328.6MB in the beginning and 325.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:55:41,111 INFO L158 Benchmark]: Boogie Preprocessor took 33.08ms. Allocated memory is still 383.8MB. Free memory was 325.8MB in the beginning and 323.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:55:41,112 INFO L158 Benchmark]: RCFGBuilder took 533.57ms. Allocated memory is still 383.8MB. Free memory was 323.7MB in the beginning and 350.8MB in the end (delta: -27.1MB). Peak memory consumption was 21.1MB. Max. memory is 16.0GB. [2023-08-26 12:55:41,112 INFO L158 Benchmark]: TraceAbstraction took 594024.54ms. Allocated memory was 383.8MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 350.0MB in the beginning and 8.2GB in the end (delta: -7.9GB). Peak memory consumption was 9.4GB. Max. memory is 16.0GB. [2023-08-26 12:55:41,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 383.8MB. Free memory was 361.1MB in the beginning and 361.1MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 580.36ms. Allocated memory is still 383.8MB. Free memory was 357.7MB in the beginning and 328.6MB in the end (delta: 29.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.70ms. Allocated memory is still 383.8MB. Free memory was 328.6MB in the beginning and 325.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.08ms. Allocated memory is still 383.8MB. Free memory was 325.8MB in the beginning and 323.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 533.57ms. Allocated memory is still 383.8MB. Free memory was 323.7MB in the beginning and 350.8MB in the end (delta: -27.1MB). Peak memory consumption was 21.1MB. Max. memory is 16.0GB. * TraceAbstraction took 594024.54ms. Allocated memory was 383.8MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 350.0MB in the beginning and 8.2GB in the end (delta: -7.9GB). Peak memory consumption was 9.4GB. 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] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 206 PlacesBefore, 69 PlacesAfterwards, 233 TransitionsBefore, 89 TransitionsAfterwards, 13632 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 137 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 228 TotalNumberOfCompositions, 31784 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14310, independent: 13886, independent conditional: 0, independent unconditional: 13886, dependent: 424, dependent conditional: 0, dependent unconditional: 424, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7307, independent: 7227, independent conditional: 0, independent unconditional: 7227, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14310, independent: 6659, independent conditional: 0, independent unconditional: 6659, dependent: 344, dependent conditional: 0, dependent unconditional: 344, unknown: 7307, unknown conditional: 0, unknown unconditional: 7307] , Statistics on independence cache: Total cache size (in pairs): 419, Positive cache size: 380, Positive conditional cache size: 0, Positive unconditional cache size: 380, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 267 PlacesBefore, 101 PlacesAfterwards, 306 TransitionsBefore, 132 TransitionsAfterwards, 38908 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 188 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 29 ConcurrentYvCompositions, 8 ChoiceCompositions, 288 TotalNumberOfCompositions, 94786 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46757, independent: 46104, independent conditional: 0, independent unconditional: 46104, dependent: 653, dependent conditional: 0, dependent unconditional: 653, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 20772, independent: 20643, independent conditional: 0, independent unconditional: 20643, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 46757, independent: 25461, independent conditional: 0, independent unconditional: 25461, dependent: 524, dependent conditional: 0, dependent unconditional: 524, unknown: 20772, unknown conditional: 0, unknown unconditional: 20772] , Statistics on independence cache: Total cache size (in pairs): 1687, Positive cache size: 1621, Positive conditional cache size: 0, Positive unconditional cache size: 1621, Negative cache size: 66, Negative conditional cache size: 0, Negative unconditional cache size: 66, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5s, 328 PlacesBefore, 131 PlacesAfterwards, 379 TransitionsBefore, 173 TransitionsAfterwards, 74124 CoEnabledTransitionPairs, 7 FixpointIterations, 55 TrivialSequentialCompositions, 247 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 32 ConcurrentYvCompositions, 9 ChoiceCompositions, 349 TotalNumberOfCompositions, 191022 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 78721, independent: 77821, independent conditional: 0, independent unconditional: 77821, dependent: 900, dependent conditional: 0, dependent unconditional: 900, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 39061, independent: 38872, independent conditional: 0, independent unconditional: 38872, dependent: 189, dependent conditional: 0, dependent unconditional: 189, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 78721, independent: 38949, independent conditional: 0, independent unconditional: 38949, dependent: 711, dependent conditional: 0, dependent unconditional: 711, unknown: 39061, unknown conditional: 0, unknown unconditional: 39061] , Statistics on independence cache: Total cache size (in pairs): 2401, Positive cache size: 2330, Positive conditional cache size: 0, Positive unconditional cache size: 2330, Negative cache size: 71, Negative conditional cache size: 0, Negative unconditional cache size: 71, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.6s, 389 PlacesBefore, 161 PlacesAfterwards, 452 TransitionsBefore, 214 TransitionsAfterwards, 119848 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 301 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 43 ConcurrentYvCompositions, 10 ChoiceCompositions, 419 TotalNumberOfCompositions, 344417 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 122099, independent: 120816, independent conditional: 0, independent unconditional: 120816, dependent: 1283, dependent conditional: 0, dependent unconditional: 1283, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 62801, independent: 62590, independent conditional: 0, independent unconditional: 62590, dependent: 211, dependent conditional: 0, dependent unconditional: 211, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 122099, independent: 58226, independent conditional: 0, independent unconditional: 58226, dependent: 1072, dependent conditional: 0, dependent unconditional: 1072, unknown: 62801, unknown conditional: 0, unknown unconditional: 62801] , Statistics on independence cache: Total cache size (in pairs): 2675, Positive cache size: 2584, Positive conditional cache size: 0, Positive unconditional cache size: 2584, Negative cache size: 91, Negative conditional cache size: 0, Negative unconditional cache size: 91, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 998]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1036]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 998]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 264 locations, 38 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: 9.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 222 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 245 SizeOfPredicates, 15 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/3 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, 323 locations, 49 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: 22.1s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 518 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 518 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1057 IncrementalHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 6 mSDtfsCounter, 1057 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=506occurred in iteration=6, InterpolantAutomatonStates: 22, 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, 0.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 383 SizeOfPredicates, 16 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 0/3 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 3 thread instances CFG has 5 procedures, 382 locations, 60 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: 461.3s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 452.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1154 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1154 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1661 IncrementalHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 8 mSDtfsCounter, 1661 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=673occurred in iteration=6, InterpolantAutomatonStates: 29, 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, 0.7s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 469 SizeOfPredicates, 31 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 0/21 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 4 thread instances CFG has 6 procedures, 441 locations, 71 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: 100.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 92.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 231 IncrementalHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1 mSDtfsCounter, 231 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=472occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !ENTRY org.eclipse.osgi 4 0 2023-08-26 12:55:41.189 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86789f182/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86789f182/.metadata/.log.