/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -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/pthread/queue_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 14:08:03,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 14:08:03,845 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 14:08:03,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 14:08:03,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 14:08:03,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 14:08:03,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 14:08:03,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 14:08:03,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 14:08:03,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 14:08:03,886 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 14:08:03,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 14:08:03,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 14:08:03,888 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 14:08:03,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 14:08:03,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 14:08:03,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 14:08:03,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 14:08:03,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 14:08:03,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 14:08:03,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 14:08:03,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 14:08:03,890 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 14:08:03,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 14:08:03,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 14:08:03,891 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 14:08:03,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 14:08:03,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 14:08:03,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 14:08:03,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 14:08:03,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 14:08:03,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 14:08:03,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 14:08:03,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 14:08:03,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 14:08:03,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 14:08:04,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 14:08:04,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 14:08:04,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 14:08:04,213 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 14:08:04,213 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 14:08:04,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2023-08-26 14:08:05,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 14:08:05,701 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 14:08:05,702 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2023-08-26 14:08:05,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f1be8f9/96d65ffbd9974087b0af71c37a5a6fae/FLAGf35737d28 [2023-08-26 14:08:05,731 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f1be8f9/96d65ffbd9974087b0af71c37a5a6fae [2023-08-26 14:08:05,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 14:08:05,734 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 14:08:05,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 14:08:05,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 14:08:05,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 14:08:05,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:08:05" (1/1) ... [2023-08-26 14:08:05,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebd07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:05, skipping insertion in model container [2023-08-26 14:08:05,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:08:05" (1/1) ... [2023-08-26 14:08:05,781 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 14:08:06,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 14:08:06,185 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 14:08:06,212 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-26 14:08:06,213 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-26 14:08:06,220 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-26 14:08:06,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 14:08:06,327 INFO L206 MainTranslator]: Completed translation [2023-08-26 14:08:06,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06 WrapperNode [2023-08-26 14:08:06,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 14:08:06,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 14:08:06,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 14:08:06,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 14:08:06,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,402 INFO L138 Inliner]: procedures = 274, calls = 63, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 252 [2023-08-26 14:08:06,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 14:08:06,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 14:08:06,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 14:08:06,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 14:08:06,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 14:08:06,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 14:08:06,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 14:08:06,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 14:08:06,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (1/1) ... [2023-08-26 14:08:06,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 14:08:06,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 14:08:06,493 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 14:08:06,500 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 14:08:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-26 14:08:06,519 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-26 14:08:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-26 14:08:06,519 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-26 14:08:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 14:08:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 14:08:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 14:08:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 14:08:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 14:08:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 14:08:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 14:08:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 14:08:06,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 14:08:06,522 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 14:08:06,661 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 14:08:06,662 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 14:08:07,073 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 14:08:07,088 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 14:08:07,088 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 14:08:07,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:08:07 BoogieIcfgContainer [2023-08-26 14:08:07,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 14:08:07,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 14:08:07,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 14:08:07,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 14:08:07,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:08:05" (1/3) ... [2023-08-26 14:08:07,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112b1f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:08:07, skipping insertion in model container [2023-08-26 14:08:07,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:08:06" (2/3) ... [2023-08-26 14:08:07,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112b1f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:08:07, skipping insertion in model container [2023-08-26 14:08:07,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:08:07" (3/3) ... [2023-08-26 14:08:07,098 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-08-26 14:08:07,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 14:08:07,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2023-08-26 14:08:07,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 14:08:07,324 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 14:08:07,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 346 transitions, 708 flow [2023-08-26 14:08:07,472 INFO L124 PetriNetUnfolderBase]: 18/344 cut-off events. [2023-08-26 14:08:07,472 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 14:08:07,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 344 events. 18/344 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 802 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 253. Up to 2 conditions per place. [2023-08-26 14:08:07,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 346 transitions, 708 flow [2023-08-26 14:08:07,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 335 transitions, 679 flow [2023-08-26 14:08:07,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 14:08:07,516 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 335 transitions, 679 flow [2023-08-26 14:08:07,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 335 transitions, 679 flow [2023-08-26 14:08:07,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 335 transitions, 679 flow [2023-08-26 14:08:07,590 INFO L124 PetriNetUnfolderBase]: 18/335 cut-off events. [2023-08-26 14:08:07,591 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 14:08:07,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 335 events. 18/335 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 768 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 253. Up to 2 conditions per place. [2023-08-26 14:08:07,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 30836 [2023-08-26 14:08:19,353 INFO L134 LiptonReduction]: Checked pairs total: 110142 [2023-08-26 14:08:19,354 INFO L136 LiptonReduction]: Total number of compositions: 446 [2023-08-26 14:08:19,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 14:08:19,371 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;@7aab5790, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 14:08:19,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 141 error locations. [2023-08-26 14:08:19,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 14:08:19,372 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 14:08:19,372 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 14:08:19,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:19,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 14:08:19,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:19,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1473, now seen corresponding path program 1 times [2023-08-26 14:08:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:19,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847521432] [2023-08-26 14:08:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:19,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:19,490 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 14:08:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:19,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847521432] [2023-08-26 14:08:19,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847521432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:19,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:19,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 14:08:19,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922147458] [2023-08-26 14:08:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:19,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 14:08:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 14:08:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 14:08:19,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 792 [2023-08-26 14:08:19,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 141 transitions, 291 flow. Second operand has 2 states, 2 states have (on average 330.5) internal successors, (661), 2 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 14:08:19,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:19,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 792 [2023-08-26 14:08:19,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:20,686 INFO L124 PetriNetUnfolderBase]: 7535/12133 cut-off events. [2023-08-26 14:08:20,686 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-08-26 14:08:20,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23627 conditions, 12133 events. 7535/12133 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 72846 event pairs, 6615 based on Foata normal form. 176/6479 useless extension candidates. Maximal degree in co-relation 23235. Up to 11381 conditions per place. [2023-08-26 14:08:20,764 INFO L140 encePairwiseOnDemand]: 743/792 looper letters, 82 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2023-08-26 14:08:20,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 357 flow [2023-08-26 14:08:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 14:08:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 14:08:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 791 transitions. [2023-08-26 14:08:20,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49936868686868685 [2023-08-26 14:08:20,778 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 791 transitions. [2023-08-26 14:08:20,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 791 transitions. [2023-08-26 14:08:20,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:20,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 791 transitions. [2023-08-26 14:08:20,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 395.5) internal successors, (791), 2 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 14:08:20,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 792.0) internal successors, (2376), 3 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 14:08:20,794 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 792.0) internal successors, (2376), 3 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 14:08:20,795 INFO L175 Difference]: Start difference. First operand has 138 places, 141 transitions, 291 flow. Second operand 2 states and 791 transitions. [2023-08-26 14:08:20,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 357 flow [2023-08-26 14:08:20,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 352 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 14:08:20,802 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 188 flow [2023-08-26 14:08:20,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2023-08-26 14:08:20,808 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -49 predicate places. [2023-08-26 14:08:20,808 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 188 flow [2023-08-26 14:08:20,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 330.5) internal successors, (661), 2 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 14:08:20,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:20,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 14:08:20,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 14:08:20,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:20,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1460667, now seen corresponding path program 1 times [2023-08-26 14:08:20,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:20,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376649130] [2023-08-26 14:08:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:20,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:21,129 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 14:08:21,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:21,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376649130] [2023-08-26 14:08:21,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376649130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:21,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:21,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 14:08:21,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640408791] [2023-08-26 14:08:21,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:21,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:21,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 792 [2023-08-26 14:08:21,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 14:08:21,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:21,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 792 [2023-08-26 14:08:21,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:22,146 INFO L124 PetriNetUnfolderBase]: 8459/13321 cut-off events. [2023-08-26 14:08:22,147 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 14:08:22,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26191 conditions, 13321 events. 8459/13321 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 76447 event pairs, 7486 based on Foata normal form. 0/6794 useless extension candidates. Maximal degree in co-relation 26188. Up to 12776 conditions per place. [2023-08-26 14:08:22,231 INFO L140 encePairwiseOnDemand]: 789/792 looper letters, 83 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-26 14:08:22,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 352 flow [2023-08-26 14:08:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2023-08-26 14:08:22,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34175084175084175 [2023-08-26 14:08:22,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2023-08-26 14:08:22,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2023-08-26 14:08:22,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:22,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2023-08-26 14:08:22,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 14:08:22,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:22,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:22,245 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 188 flow. Second operand 3 states and 812 transitions. [2023-08-26 14:08:22,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 352 flow [2023-08-26 14:08:22,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 14:08:22,248 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 186 flow [2023-08-26 14:08:22,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2023-08-26 14:08:22,250 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -49 predicate places. [2023-08-26 14:08:22,252 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 186 flow [2023-08-26 14:08:22,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 14:08:22,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:22,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 14:08:22,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 14:08:22,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:22,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:22,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1460668, now seen corresponding path program 1 times [2023-08-26 14:08:22,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:22,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128784370] [2023-08-26 14:08:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:22,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:22,350 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 14:08:22,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:22,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128784370] [2023-08-26 14:08:22,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128784370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:22,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:22,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 14:08:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587965626] [2023-08-26 14:08:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:22,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:22,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:22,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 792 [2023-08-26 14:08:22,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states 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 14:08:22,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:22,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 792 [2023-08-26 14:08:22,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:23,275 INFO L124 PetriNetUnfolderBase]: 8385/13176 cut-off events. [2023-08-26 14:08:23,275 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 14:08:23,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25906 conditions, 13176 events. 8385/13176 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 75229 event pairs, 7419 based on Foata normal form. 0/6752 useless extension candidates. Maximal degree in co-relation 25902. Up to 12634 conditions per place. [2023-08-26 14:08:23,350 INFO L140 encePairwiseOnDemand]: 789/792 looper letters, 81 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-08-26 14:08:23,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 346 flow [2023-08-26 14:08:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-08-26 14:08:23,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2023-08-26 14:08:23,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-08-26 14:08:23,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-08-26 14:08:23,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:23,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-08-26 14:08:23,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 14:08:23,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:23,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:23,361 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 186 flow. Second operand 3 states and 804 transitions. [2023-08-26 14:08:23,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 346 flow [2023-08-26 14:08:23,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:23,366 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 183 flow [2023-08-26 14:08:23,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2023-08-26 14:08:23,367 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -50 predicate places. [2023-08-26 14:08:23,367 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 183 flow [2023-08-26 14:08:23,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states 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 14:08:23,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:23,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 14:08:23,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 14:08:23,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:23,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1460741, now seen corresponding path program 1 times [2023-08-26 14:08:23,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:23,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183683481] [2023-08-26 14:08:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:23,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:23,544 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 14:08:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183683481] [2023-08-26 14:08:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183683481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:23,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:23,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 14:08:23,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537640159] [2023-08-26 14:08:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:23,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 792 [2023-08-26 14:08:23,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 14:08:23,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:23,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 792 [2023-08-26 14:08:23,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:24,394 INFO L124 PetriNetUnfolderBase]: 7543/11850 cut-off events. [2023-08-26 14:08:24,394 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 14:08:24,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23281 conditions, 11850 events. 7543/11850 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 66499 event pairs, 6629 based on Foata normal form. 0/6330 useless extension candidates. Maximal degree in co-relation 23277. Up to 11340 conditions per place. [2023-08-26 14:08:24,449 INFO L140 encePairwiseOnDemand]: 787/792 looper letters, 77 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2023-08-26 14:08:24,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 331 flow [2023-08-26 14:08:24,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-08-26 14:08:24,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3362794612794613 [2023-08-26 14:08:24,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-08-26 14:08:24,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-08-26 14:08:24,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:24,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-08-26 14:08:24,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 14:08:24,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:24,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:24,461 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 183 flow. Second operand 3 states and 799 transitions. [2023-08-26 14:08:24,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 331 flow [2023-08-26 14:08:24,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:24,463 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 176 flow [2023-08-26 14:08:24,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-08-26 14:08:24,466 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -53 predicate places. [2023-08-26 14:08:24,466 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 176 flow [2023-08-26 14:08:24,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 14:08:24,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:24,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 14:08:24,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 14:08:24,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:24,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1460743, now seen corresponding path program 1 times [2023-08-26 14:08:24,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:24,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797976642] [2023-08-26 14:08:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:24,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:24,623 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 14:08:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797976642] [2023-08-26 14:08:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797976642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:24,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:24,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 14:08:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458295664] [2023-08-26 14:08:24,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:24,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:24,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:24,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 792 [2023-08-26 14:08:24,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 14:08:24,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:24,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 792 [2023-08-26 14:08:24,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:25,347 INFO L124 PetriNetUnfolderBase]: 6743/10590 cut-off events. [2023-08-26 14:08:25,347 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 14:08:25,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20788 conditions, 10590 events. 6743/10590 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 58226 event pairs, 5881 based on Foata normal form. 0/5914 useless extension candidates. Maximal degree in co-relation 20784. Up to 10112 conditions per place. [2023-08-26 14:08:25,404 INFO L140 encePairwiseOnDemand]: 787/792 looper letters, 73 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-08-26 14:08:25,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 80 transitions, 316 flow [2023-08-26 14:08:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2023-08-26 14:08:25,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33080808080808083 [2023-08-26 14:08:25,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2023-08-26 14:08:25,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2023-08-26 14:08:25,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:25,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2023-08-26 14:08:25,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 14:08:25,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:25,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:25,415 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 176 flow. Second operand 3 states and 786 transitions. [2023-08-26 14:08:25,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 80 transitions, 316 flow [2023-08-26 14:08:25,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:25,417 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 169 flow [2023-08-26 14:08:25,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-08-26 14:08:25,418 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -56 predicate places. [2023-08-26 14:08:25,418 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 169 flow [2023-08-26 14:08:25,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 14:08:25,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:25,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 14:08:25,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 14:08:25,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:25,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:25,419 INFO L85 PathProgramCache]: Analyzing trace with hash 45281025, now seen corresponding path program 1 times [2023-08-26 14:08:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:25,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337741033] [2023-08-26 14:08:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:25,916 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 14:08:25,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:25,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337741033] [2023-08-26 14:08:25,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337741033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:25,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:25,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 14:08:25,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227321971] [2023-08-26 14:08:25,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:25,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:25,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:25,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:25,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 792 [2023-08-26 14:08:25,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 14:08:25,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:25,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 792 [2023-08-26 14:08:25,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:26,713 INFO L124 PetriNetUnfolderBase]: 6451/10215 cut-off events. [2023-08-26 14:08:26,714 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 14:08:26,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19967 conditions, 10215 events. 6451/10215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 56745 event pairs, 5404 based on Foata normal form. 0/5760 useless extension candidates. Maximal degree in co-relation 19963. Up to 9662 conditions per place. [2023-08-26 14:08:26,773 INFO L140 encePairwiseOnDemand]: 787/792 looper letters, 74 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-26 14:08:26,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 335 flow [2023-08-26 14:08:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2023-08-26 14:08:26,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38173400673400676 [2023-08-26 14:08:26,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2023-08-26 14:08:26,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2023-08-26 14:08:26,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:26,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2023-08-26 14:08:26,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 14:08:26,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:26,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:26,785 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 169 flow. Second operand 3 states and 907 transitions. [2023-08-26 14:08:26,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 335 flow [2023-08-26 14:08:26,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:26,787 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 194 flow [2023-08-26 14:08:26,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2023-08-26 14:08:26,788 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -54 predicate places. [2023-08-26 14:08:26,788 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 194 flow [2023-08-26 14:08:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 14:08:26,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:26,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 14:08:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 14:08:26,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:26,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1403711286, now seen corresponding path program 1 times [2023-08-26 14:08:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548510430] [2023-08-26 14:08:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:26,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:27,085 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 14:08:27,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548510430] [2023-08-26 14:08:27,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548510430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:27,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:27,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 14:08:27,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562946470] [2023-08-26 14:08:27,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:27,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 14:08:27,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 14:08:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 14:08:27,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 792 [2023-08-26 14:08:27,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 14:08:27,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:27,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 792 [2023-08-26 14:08:27,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:27,857 INFO L124 PetriNetUnfolderBase]: 6989/10966 cut-off events. [2023-08-26 14:08:27,857 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-26 14:08:27,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21920 conditions, 10966 events. 6989/10966 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 61482 event pairs, 1613 based on Foata normal form. 49/6277 useless extension candidates. Maximal degree in co-relation 21915. Up to 10125 conditions per place. [2023-08-26 14:08:27,904 INFO L140 encePairwiseOnDemand]: 787/792 looper letters, 92 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2023-08-26 14:08:27,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 104 transitions, 438 flow [2023-08-26 14:08:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-26 14:08:27,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3261784511784512 [2023-08-26 14:08:27,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-26 14:08:27,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-26 14:08:27,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:27,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-26 14:08:27,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 14:08:27,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:27,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:27,915 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 194 flow. Second operand 3 states and 775 transitions. [2023-08-26 14:08:27,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 104 transitions, 438 flow [2023-08-26 14:08:27,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 104 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:27,917 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 226 flow [2023-08-26 14:08:27,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2023-08-26 14:08:27,917 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -52 predicate places. [2023-08-26 14:08:27,918 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 226 flow [2023-08-26 14:08:27,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 14:08:27,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:27,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 14:08:27,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 14:08:27,918 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:27,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:27,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1403732431, now seen corresponding path program 1 times [2023-08-26 14:08:27,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:27,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686171565] [2023-08-26 14:08:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:27,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:27,951 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 14:08:27,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:27,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686171565] [2023-08-26 14:08:27,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686171565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:27,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:27,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 14:08:27,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535846224] [2023-08-26 14:08:27,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:27,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:27,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:27,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:27,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:27,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 792 [2023-08-26 14:08:27,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states 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 14:08:27,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:27,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 792 [2023-08-26 14:08:27,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:28,591 INFO L124 PetriNetUnfolderBase]: 5053/8076 cut-off events. [2023-08-26 14:08:28,591 INFO L125 PetriNetUnfolderBase]: For 572/572 co-relation queries the response was YES. [2023-08-26 14:08:28,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16632 conditions, 8076 events. 5053/8076 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 43663 event pairs, 4239 based on Foata normal form. 0/5078 useless extension candidates. Maximal degree in co-relation 16626. Up to 7704 conditions per place. [2023-08-26 14:08:28,625 INFO L140 encePairwiseOnDemand]: 790/792 looper letters, 78 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-26 14:08:28,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 382 flow [2023-08-26 14:08:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2023-08-26 14:08:28,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2023-08-26 14:08:28,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2023-08-26 14:08:28,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2023-08-26 14:08:28,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:28,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2023-08-26 14:08:28,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states 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 14:08:28,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:28,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:28,636 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 226 flow. Second operand 3 states and 800 transitions. [2023-08-26 14:08:28,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 382 flow [2023-08-26 14:08:28,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:28,638 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 220 flow [2023-08-26 14:08:28,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2023-08-26 14:08:28,642 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -52 predicate places. [2023-08-26 14:08:28,642 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 220 flow [2023-08-26 14:08:28,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states 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 14:08:28,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:28,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 14:08:28,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 14:08:28,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:28,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1403732429, now seen corresponding path program 1 times [2023-08-26 14:08:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:28,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791065624] [2023-08-26 14:08:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:28,693 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 14:08:28,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:28,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791065624] [2023-08-26 14:08:28,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791065624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:28,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:28,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 14:08:28,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938923913] [2023-08-26 14:08:28,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:28,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 14:08:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:28,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 14:08:28,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 14:08:28,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 792 [2023-08-26 14:08:28,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 238.25) internal successors, (953), 4 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 14:08:28,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:28,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 792 [2023-08-26 14:08:28,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:29,043 INFO L124 PetriNetUnfolderBase]: 3117/5174 cut-off events. [2023-08-26 14:08:29,043 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2023-08-26 14:08:29,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10656 conditions, 5174 events. 3117/5174 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 27102 event pairs, 2558 based on Foata normal form. 0/3750 useless extension candidates. Maximal degree in co-relation 10650. Up to 4924 conditions per place. [2023-08-26 14:08:29,072 INFO L140 encePairwiseOnDemand]: 790/792 looper letters, 77 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2023-08-26 14:08:29,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 374 flow [2023-08-26 14:08:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 784 transitions. [2023-08-26 14:08:29,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2023-08-26 14:08:29,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 784 transitions. [2023-08-26 14:08:29,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 784 transitions. [2023-08-26 14:08:29,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:29,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 784 transitions. [2023-08-26 14:08:29,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states 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 14:08:29,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:29,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:29,082 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 220 flow. Second operand 3 states and 784 transitions. [2023-08-26 14:08:29,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 374 flow [2023-08-26 14:08:29,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:29,084 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 219 flow [2023-08-26 14:08:29,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2023-08-26 14:08:29,085 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -52 predicate places. [2023-08-26 14:08:29,085 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 219 flow [2023-08-26 14:08:29,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.25) internal successors, (953), 4 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 14:08:29,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:29,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 14:08:29,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 14:08:29,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:29,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1403712931, now seen corresponding path program 1 times [2023-08-26 14:08:29,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:29,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785276614] [2023-08-26 14:08:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:29,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:29,244 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 14:08:29,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:29,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785276614] [2023-08-26 14:08:29,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785276614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:29,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:29,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 14:08:29,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109534336] [2023-08-26 14:08:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:29,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 14:08:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 14:08:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 14:08:29,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 792 [2023-08-26 14:08:29,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 14:08:29,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:29,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 792 [2023-08-26 14:08:29,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:29,761 INFO L124 PetriNetUnfolderBase]: 3383/5654 cut-off events. [2023-08-26 14:08:29,761 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-26 14:08:29,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11469 conditions, 5654 events. 3383/5654 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 29913 event pairs, 1602 based on Foata normal form. 0/4150 useless extension candidates. Maximal degree in co-relation 11463. Up to 2850 conditions per place. [2023-08-26 14:08:29,785 INFO L140 encePairwiseOnDemand]: 785/792 looper letters, 106 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-08-26 14:08:29,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 506 flow [2023-08-26 14:08:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 14:08:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 14:08:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 983 transitions. [2023-08-26 14:08:29,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31029040404040403 [2023-08-26 14:08:29,789 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 983 transitions. [2023-08-26 14:08:29,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 983 transitions. [2023-08-26 14:08:29,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:29,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 983 transitions. [2023-08-26 14:08:29,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 14:08:29,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 792.0) internal successors, (3960), 5 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states 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 14:08:29,796 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 792.0) internal successors, (3960), 5 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states 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 14:08:29,796 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 219 flow. Second operand 4 states and 983 transitions. [2023-08-26 14:08:29,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 506 flow [2023-08-26 14:08:29,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:29,801 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 220 flow [2023-08-26 14:08:29,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2023-08-26 14:08:29,802 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -51 predicate places. [2023-08-26 14:08:29,802 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 220 flow [2023-08-26 14:08:29,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 14:08:29,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:29,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:29,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 14:08:29,803 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:29,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1501031940, now seen corresponding path program 1 times [2023-08-26 14:08:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:29,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725148915] [2023-08-26 14:08:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:29,860 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 14:08:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725148915] [2023-08-26 14:08:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725148915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:29,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:29,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 14:08:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891249226] [2023-08-26 14:08:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:29,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:29,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:29,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 792 [2023-08-26 14:08:29,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 14:08:29,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:29,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 792 [2023-08-26 14:08:29,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:30,187 INFO L124 PetriNetUnfolderBase]: 2026/3482 cut-off events. [2023-08-26 14:08:30,187 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2023-08-26 14:08:30,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7140 conditions, 3482 events. 2026/3482 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16162 event pairs, 1026 based on Foata normal form. 0/2624 useless extension candidates. Maximal degree in co-relation 7133. Up to 1983 conditions per place. [2023-08-26 14:08:30,204 INFO L140 encePairwiseOnDemand]: 788/792 looper letters, 92 selfloop transitions, 3 changer transitions 3/108 dead transitions. [2023-08-26 14:08:30,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 464 flow [2023-08-26 14:08:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-08-26 14:08:30,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2023-08-26 14:08:30,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-08-26 14:08:30,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-08-26 14:08:30,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:30,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-08-26 14:08:30,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 14:08:30,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:30,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:30,214 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 220 flow. Second operand 3 states and 1068 transitions. [2023-08-26 14:08:30,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 464 flow [2023-08-26 14:08:30,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 108 transitions, 451 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 14:08:30,217 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 203 flow [2023-08-26 14:08:30,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-08-26 14:08:30,218 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -53 predicate places. [2023-08-26 14:08:30,218 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 203 flow [2023-08-26 14:08:30,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 14:08:30,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:30,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:30,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 14:08:30,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:30,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -236353230, now seen corresponding path program 1 times [2023-08-26 14:08:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:30,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262601788] [2023-08-26 14:08:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:30,300 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 14:08:30,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:30,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262601788] [2023-08-26 14:08:30,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262601788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:30,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:30,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 14:08:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91302446] [2023-08-26 14:08:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:30,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:30,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 792 [2023-08-26 14:08:30,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 14:08:30,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:30,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 792 [2023-08-26 14:08:30,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:30,580 INFO L124 PetriNetUnfolderBase]: 2037/3442 cut-off events. [2023-08-26 14:08:30,580 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-08-26 14:08:30,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7180 conditions, 3442 events. 2037/3442 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15327 event pairs, 1636 based on Foata normal form. 0/2574 useless extension candidates. Maximal degree in co-relation 7173. Up to 3300 conditions per place. [2023-08-26 14:08:30,592 INFO L140 encePairwiseOnDemand]: 788/792 looper letters, 70 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-08-26 14:08:30,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 339 flow [2023-08-26 14:08:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-08-26 14:08:30,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3312289562289562 [2023-08-26 14:08:30,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-08-26 14:08:30,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-08-26 14:08:30,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:30,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-08-26 14:08:30,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 14:08:30,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:30,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:30,602 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 203 flow. Second operand 3 states and 787 transitions. [2023-08-26 14:08:30,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 339 flow [2023-08-26 14:08:30,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:30,604 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 196 flow [2023-08-26 14:08:30,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2023-08-26 14:08:30,605 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -55 predicate places. [2023-08-26 14:08:30,605 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 196 flow [2023-08-26 14:08:30,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 14:08:30,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:30,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:30,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 14:08:30,606 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:30,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash -236353231, now seen corresponding path program 1 times [2023-08-26 14:08:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876346705] [2023-08-26 14:08:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:31,241 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 14:08:31,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:31,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876346705] [2023-08-26 14:08:31,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876346705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:31,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:31,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 14:08:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68646365] [2023-08-26 14:08:31,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:31,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 14:08:31,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:31,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 14:08:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 14:08:31,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 792 [2023-08-26 14:08:31,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 14:08:31,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:31,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 792 [2023-08-26 14:08:31,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:31,756 INFO L124 PetriNetUnfolderBase]: 1984/3392 cut-off events. [2023-08-26 14:08:31,757 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-08-26 14:08:31,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7022 conditions, 3392 events. 1984/3392 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15414 event pairs, 1573 based on Foata normal form. 0/2575 useless extension candidates. Maximal degree in co-relation 7015. Up to 3198 conditions per place. [2023-08-26 14:08:31,767 INFO L140 encePairwiseOnDemand]: 785/792 looper letters, 71 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2023-08-26 14:08:31,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 384 flow [2023-08-26 14:08:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 14:08:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 14:08:31,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1507 transitions. [2023-08-26 14:08:31,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31712962962962965 [2023-08-26 14:08:31,773 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1507 transitions. [2023-08-26 14:08:31,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1507 transitions. [2023-08-26 14:08:31,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:31,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1507 transitions. [2023-08-26 14:08:31,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.16666666666666) internal successors, (1507), 6 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states 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 14:08:31,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 792.0) internal successors, (5544), 7 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 14:08:31,783 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 792.0) internal successors, (5544), 7 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 14:08:31,783 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 196 flow. Second operand 6 states and 1507 transitions. [2023-08-26 14:08:31,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 384 flow [2023-08-26 14:08:31,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:31,786 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 252 flow [2023-08-26 14:08:31,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-08-26 14:08:31,786 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -48 predicate places. [2023-08-26 14:08:31,787 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 252 flow [2023-08-26 14:08:31,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 14:08:31,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:31,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:31,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 14:08:31,787 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:31,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:31,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1668559450, now seen corresponding path program 1 times [2023-08-26 14:08:31,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:31,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409463213] [2023-08-26 14:08:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:31,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:32,708 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 14:08:32,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:32,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409463213] [2023-08-26 14:08:32,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409463213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:32,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:32,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 14:08:32,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243463233] [2023-08-26 14:08:32,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:32,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 14:08:32,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:32,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 14:08:32,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 14:08:32,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 792 [2023-08-26 14:08:32,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 205.57142857142858) internal successors, (1439), 7 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states 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 14:08:32,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:32,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 792 [2023-08-26 14:08:32,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:33,468 INFO L124 PetriNetUnfolderBase]: 2135/3605 cut-off events. [2023-08-26 14:08:33,469 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-26 14:08:33,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 3605 events. 2135/3605 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16232 event pairs, 631 based on Foata normal form. 11/2750 useless extension candidates. Maximal degree in co-relation 7638. Up to 3227 conditions per place. [2023-08-26 14:08:33,483 INFO L140 encePairwiseOnDemand]: 785/792 looper letters, 98 selfloop transitions, 13 changer transitions 0/117 dead transitions. [2023-08-26 14:08:33,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 117 transitions, 556 flow [2023-08-26 14:08:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 14:08:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 14:08:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1330 transitions. [2023-08-26 14:08:33,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2798821548821549 [2023-08-26 14:08:33,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1330 transitions. [2023-08-26 14:08:33,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1330 transitions. [2023-08-26 14:08:33,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:33,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1330 transitions. [2023-08-26 14:08:33,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.66666666666666) internal successors, (1330), 6 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states 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 14:08:33,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 792.0) internal successors, (5544), 7 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 14:08:33,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 792.0) internal successors, (5544), 7 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 14:08:33,497 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 252 flow. Second operand 6 states and 1330 transitions. [2023-08-26 14:08:33,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 117 transitions, 556 flow [2023-08-26 14:08:33,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 117 transitions, 548 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:33,500 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 298 flow [2023-08-26 14:08:33,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2023-08-26 14:08:33,501 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -42 predicate places. [2023-08-26 14:08:33,501 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 298 flow [2023-08-26 14:08:33,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 205.57142857142858) internal successors, (1439), 7 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states 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 14:08:33,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:33,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:33,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 14:08:33,502 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:33,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash 757024056, now seen corresponding path program 2 times [2023-08-26 14:08:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:33,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970794752] [2023-08-26 14:08:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:33,620 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 14:08:33,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970794752] [2023-08-26 14:08:33,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970794752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:33,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:33,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 14:08:33,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689056896] [2023-08-26 14:08:33,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:33,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 14:08:33,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 14:08:33,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 14:08:33,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 792 [2023-08-26 14:08:33,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 14:08:33,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:33,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 792 [2023-08-26 14:08:33,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:33,925 INFO L124 PetriNetUnfolderBase]: 2118/3584 cut-off events. [2023-08-26 14:08:33,925 INFO L125 PetriNetUnfolderBase]: For 468/468 co-relation queries the response was YES. [2023-08-26 14:08:33,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7719 conditions, 3584 events. 2118/3584 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16135 event pairs, 1695 based on Foata normal form. 0/2728 useless extension candidates. Maximal degree in co-relation 7706. Up to 3430 conditions per place. [2023-08-26 14:08:33,944 INFO L140 encePairwiseOnDemand]: 790/792 looper letters, 78 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-26 14:08:33,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 85 transitions, 454 flow [2023-08-26 14:08:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 778 transitions. [2023-08-26 14:08:33,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3274410774410774 [2023-08-26 14:08:33,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 778 transitions. [2023-08-26 14:08:33,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 778 transitions. [2023-08-26 14:08:33,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:33,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 778 transitions. [2023-08-26 14:08:33,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 14:08:33,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:33,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:33,952 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 298 flow. Second operand 3 states and 778 transitions. [2023-08-26 14:08:33,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 85 transitions, 454 flow [2023-08-26 14:08:33,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 85 transitions, 442 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:33,955 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 286 flow [2023-08-26 14:08:33,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2023-08-26 14:08:33,956 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -42 predicate places. [2023-08-26 14:08:33,956 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 286 flow [2023-08-26 14:08:33,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 14:08:33,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:33,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:33,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 14:08:33,957 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:33,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 802041409, now seen corresponding path program 1 times [2023-08-26 14:08:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342618605] [2023-08-26 14:08:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:34,083 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 14:08:34,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:34,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342618605] [2023-08-26 14:08:34,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342618605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:34,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:34,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 14:08:34,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021598628] [2023-08-26 14:08:34,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:34,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 14:08:34,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:34,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 14:08:34,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 14:08:34,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 792 [2023-08-26 14:08:34,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 219.71428571428572) internal successors, (1538), 7 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states 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 14:08:34,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:34,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 792 [2023-08-26 14:08:34,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:34,458 INFO L124 PetriNetUnfolderBase]: 2123/3601 cut-off events. [2023-08-26 14:08:34,458 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2023-08-26 14:08:34,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7697 conditions, 3601 events. 2123/3601 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16295 event pairs, 757 based on Foata normal form. 0/2759 useless extension candidates. Maximal degree in co-relation 7684. Up to 2616 conditions per place. [2023-08-26 14:08:34,472 INFO L140 encePairwiseOnDemand]: 786/792 looper letters, 100 selfloop transitions, 6 changer transitions 3/115 dead transitions. [2023-08-26 14:08:34,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 115 transitions, 579 flow [2023-08-26 14:08:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 14:08:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 14:08:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1408 transitions. [2023-08-26 14:08:34,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2962962962962963 [2023-08-26 14:08:34,476 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1408 transitions. [2023-08-26 14:08:34,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1408 transitions. [2023-08-26 14:08:34,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:34,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1408 transitions. [2023-08-26 14:08:34,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.66666666666666) internal successors, (1408), 6 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states 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 14:08:34,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 792.0) internal successors, (5544), 7 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 14:08:34,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 792.0) internal successors, (5544), 7 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 14:08:34,485 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 286 flow. Second operand 6 states and 1408 transitions. [2023-08-26 14:08:34,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 115 transitions, 579 flow [2023-08-26 14:08:34,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 115 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:08:34,488 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 295 flow [2023-08-26 14:08:34,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2023-08-26 14:08:34,489 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -39 predicate places. [2023-08-26 14:08:34,489 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 295 flow [2023-08-26 14:08:34,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.71428571428572) internal successors, (1538), 7 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states 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 14:08:34,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:34,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 14:08:34,490 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err40ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:34,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash 802040652, now seen corresponding path program 1 times [2023-08-26 14:08:34,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:34,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380288815] [2023-08-26 14:08:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:34,527 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 14:08:34,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380288815] [2023-08-26 14:08:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380288815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:34,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:34,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 14:08:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854679822] [2023-08-26 14:08:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:34,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:08:34,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:08:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:08:34,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 792 [2023-08-26 14:08:34,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 14:08:34,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:34,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 792 [2023-08-26 14:08:34,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:34,799 INFO L124 PetriNetUnfolderBase]: 1863/3268 cut-off events. [2023-08-26 14:08:34,799 INFO L125 PetriNetUnfolderBase]: For 415/422 co-relation queries the response was YES. [2023-08-26 14:08:34,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6920 conditions, 3268 events. 1863/3268 cut-off events. For 415/422 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15304 event pairs, 1463 based on Foata normal form. 19/2594 useless extension candidates. Maximal degree in co-relation 6907. Up to 2964 conditions per place. [2023-08-26 14:08:34,811 INFO L140 encePairwiseOnDemand]: 788/792 looper letters, 74 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-08-26 14:08:34,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 91 transitions, 473 flow [2023-08-26 14:08:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:08:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:08:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-26 14:08:34,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43813131313131315 [2023-08-26 14:08:34,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-26 14:08:34,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-26 14:08:34,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:34,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-26 14:08:34,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states 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 14:08:34,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:34,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:08:34,819 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 295 flow. Second operand 3 states and 1041 transitions. [2023-08-26 14:08:34,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 91 transitions, 473 flow [2023-08-26 14:08:34,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 91 transitions, 462 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 14:08:34,822 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 292 flow [2023-08-26 14:08:34,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2023-08-26 14:08:34,823 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -41 predicate places. [2023-08-26 14:08:34,823 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 292 flow [2023-08-26 14:08:34,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 14:08:34,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:34,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:34,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 14:08:34,823 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err40ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:34,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1962690892, now seen corresponding path program 1 times [2023-08-26 14:08:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:34,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828186084] [2023-08-26 14:08:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:34,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:35,283 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 14:08:35,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:35,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828186084] [2023-08-26 14:08:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828186084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:35,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:35,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 14:08:35,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421813918] [2023-08-26 14:08:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:35,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 14:08:35,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 14:08:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 14:08:35,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 792 [2023-08-26 14:08:35,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 14:08:35,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:35,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 792 [2023-08-26 14:08:35,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:35,722 INFO L124 PetriNetUnfolderBase]: 2058/3491 cut-off events. [2023-08-26 14:08:35,723 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2023-08-26 14:08:35,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7525 conditions, 3491 events. 2058/3491 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15624 event pairs, 645 based on Foata normal form. 11/2678 useless extension candidates. Maximal degree in co-relation 7512. Up to 2979 conditions per place. [2023-08-26 14:08:35,733 INFO L140 encePairwiseOnDemand]: 787/792 looper letters, 87 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2023-08-26 14:08:35,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 102 transitions, 524 flow [2023-08-26 14:08:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 14:08:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 14:08:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1107 transitions. [2023-08-26 14:08:35,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27954545454545454 [2023-08-26 14:08:35,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1107 transitions. [2023-08-26 14:08:35,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1107 transitions. [2023-08-26 14:08:35,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:35,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1107 transitions. [2023-08-26 14:08:35,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.4) internal successors, (1107), 5 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 14:08:35,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 792.0) internal successors, (4752), 6 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states 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 14:08:35,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 792.0) internal successors, (4752), 6 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states 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 14:08:35,743 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 292 flow. Second operand 5 states and 1107 transitions. [2023-08-26 14:08:35,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 102 transitions, 524 flow [2023-08-26 14:08:35,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 14:08:35,746 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 294 flow [2023-08-26 14:08:35,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2023-08-26 14:08:35,747 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -40 predicate places. [2023-08-26 14:08:35,747 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 294 flow [2023-08-26 14:08:35,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 14:08:35,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:35,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:35,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 14:08:35,748 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err40ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:35,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:35,748 INFO L85 PathProgramCache]: Analyzing trace with hash -826786252, now seen corresponding path program 1 times [2023-08-26 14:08:35,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:35,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104264361] [2023-08-26 14:08:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:35,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:36,473 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 14:08:36,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:36,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104264361] [2023-08-26 14:08:36,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104264361] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:36,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:36,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-26 14:08:36,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388397394] [2023-08-26 14:08:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:36,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 14:08:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:36,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 14:08:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-26 14:08:36,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 792 [2023-08-26 14:08:36,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 294 flow. Second operand has 10 states, 10 states have (on average 218.4) internal successors, (2184), 10 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 14:08:36,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:36,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 792 [2023-08-26 14:08:36,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:37,136 INFO L124 PetriNetUnfolderBase]: 2056/3493 cut-off events. [2023-08-26 14:08:37,137 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2023-08-26 14:08:37,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7543 conditions, 3493 events. 2056/3493 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15635 event pairs, 1656 based on Foata normal form. 0/2666 useless extension candidates. Maximal degree in co-relation 7530. Up to 3327 conditions per place. [2023-08-26 14:08:37,156 INFO L140 encePairwiseOnDemand]: 780/792 looper letters, 77 selfloop transitions, 18 changer transitions 1/102 dead transitions. [2023-08-26 14:08:37,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 102 transitions, 552 flow [2023-08-26 14:08:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 14:08:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 14:08:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2044 transitions. [2023-08-26 14:08:37,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2867564534231201 [2023-08-26 14:08:37,161 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2044 transitions. [2023-08-26 14:08:37,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2044 transitions. [2023-08-26 14:08:37,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:37,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2044 transitions. [2023-08-26 14:08:37,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 227.11111111111111) internal successors, (2044), 9 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states 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 14:08:37,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 792.0) internal successors, (7920), 10 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states 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 14:08:37,172 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 792.0) internal successors, (7920), 10 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states 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 14:08:37,172 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 294 flow. Second operand 9 states and 2044 transitions. [2023-08-26 14:08:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 102 transitions, 552 flow [2023-08-26 14:08:37,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 102 transitions, 534 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 14:08:37,176 INFO L231 Difference]: Finished difference. Result has 106 places, 91 transitions, 381 flow [2023-08-26 14:08:37,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=381, PETRI_PLACES=106, PETRI_TRANSITIONS=91} [2023-08-26 14:08:37,176 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -32 predicate places. [2023-08-26 14:08:37,176 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 91 transitions, 381 flow [2023-08-26 14:08:37,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 218.4) internal successors, (2184), 10 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 14:08:37,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:37,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:37,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 14:08:37,177 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err40ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:37,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash 487145513, now seen corresponding path program 1 times [2023-08-26 14:08:37,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:37,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459567487] [2023-08-26 14:08:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:38,016 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 14:08:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459567487] [2023-08-26 14:08:38,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459567487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:38,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:38,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-26 14:08:38,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79415702] [2023-08-26 14:08:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:38,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 14:08:38,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:38,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 14:08:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-26 14:08:38,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 792 [2023-08-26 14:08:38,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 91 transitions, 381 flow. Second operand has 11 states, 11 states have (on average 189.36363636363637) internal successors, (2083), 11 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states 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 14:08:38,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:38,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 792 [2023-08-26 14:08:38,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:08:38,908 INFO L124 PetriNetUnfolderBase]: 2264/3852 cut-off events. [2023-08-26 14:08:38,909 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2023-08-26 14:08:38,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 3852 events. 2264/3852 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 17825 event pairs, 735 based on Foata normal form. 0/2961 useless extension candidates. Maximal degree in co-relation 8560. Up to 2963 conditions per place. [2023-08-26 14:08:38,926 INFO L140 encePairwiseOnDemand]: 780/792 looper letters, 122 selfloop transitions, 24 changer transitions 3/155 dead transitions. [2023-08-26 14:08:38,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 155 transitions, 839 flow [2023-08-26 14:08:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 14:08:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 14:08:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1826 transitions. [2023-08-26 14:08:38,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25617283950617287 [2023-08-26 14:08:38,930 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1826 transitions. [2023-08-26 14:08:38,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1826 transitions. [2023-08-26 14:08:38,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:08:38,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1826 transitions. [2023-08-26 14:08:38,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 202.88888888888889) internal successors, (1826), 9 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states 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 14:08:38,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 792.0) internal successors, (7920), 10 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states 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 14:08:38,938 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 792.0) internal successors, (7920), 10 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states 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 14:08:38,938 INFO L175 Difference]: Start difference. First operand has 106 places, 91 transitions, 381 flow. Second operand 9 states and 1826 transitions. [2023-08-26 14:08:38,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 155 transitions, 839 flow [2023-08-26 14:08:38,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 155 transitions, 807 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-26 14:08:38,943 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 452 flow [2023-08-26 14:08:38,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=452, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2023-08-26 14:08:38,944 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -25 predicate places. [2023-08-26 14:08:38,944 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 452 flow [2023-08-26 14:08:38,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 189.36363636363637) internal successors, (2083), 11 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states 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 14:08:38,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:08:38,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:08:38,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 14:08:38,945 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err40ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:08:38,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:08:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 140615885, now seen corresponding path program 2 times [2023-08-26 14:08:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:08:38,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112588974] [2023-08-26 14:08:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:08:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:08:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:08:47,386 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 14:08:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:08:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112588974] [2023-08-26 14:08:47,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112588974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:08:47,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:08:47,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-26 14:08:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295750260] [2023-08-26 14:08:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:08:47,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 14:08:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:08:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 14:08:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-08-26 14:08:47,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 792 [2023-08-26 14:08:47,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 452 flow. Second operand has 13 states, 13 states have (on average 189.15384615384616) internal successors, (2459), 13 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states 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 14:08:47,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:08:47,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 792 [2023-08-26 14:08:47,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:19,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-26 14:09:23,251 INFO L124 PetriNetUnfolderBase]: 2510/4282 cut-off events. [2023-08-26 14:09:23,251 INFO L125 PetriNetUnfolderBase]: For 872/872 co-relation queries the response was YES. [2023-08-26 14:09:23,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10030 conditions, 4282 events. 2510/4282 cut-off events. For 872/872 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 20383 event pairs, 1733 based on Foata normal form. 0/3309 useless extension candidates. Maximal degree in co-relation 10010. Up to 3172 conditions per place. [2023-08-26 14:09:23,267 INFO L140 encePairwiseOnDemand]: 779/792 looper letters, 133 selfloop transitions, 26 changer transitions 3/168 dead transitions. [2023-08-26 14:09:23,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 168 transitions, 992 flow [2023-08-26 14:09:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 14:09:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 14:09:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2024 transitions. [2023-08-26 14:09:23,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25555555555555554 [2023-08-26 14:09:23,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2024 transitions. [2023-08-26 14:09:23,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2024 transitions. [2023-08-26 14:09:23,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:23,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2024 transitions. [2023-08-26 14:09:23,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 202.4) internal successors, (2024), 10 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states 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 14:09:23,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 792.0) internal successors, (8712), 11 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 14:09:23,279 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 792.0) internal successors, (8712), 11 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 14:09:23,280 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 452 flow. Second operand 10 states and 2024 transitions. [2023-08-26 14:09:23,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 168 transitions, 992 flow [2023-08-26 14:09:23,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 168 transitions, 944 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-26 14:09:23,288 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 577 flow [2023-08-26 14:09:23,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=577, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2023-08-26 14:09:23,289 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -16 predicate places. [2023-08-26 14:09:23,289 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 577 flow [2023-08-26 14:09:23,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.15384615384616) internal successors, (2459), 13 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states 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 14:09:23,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:23,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:23,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 14:09:23,290 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err40ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:23,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash 139376195, now seen corresponding path program 3 times [2023-08-26 14:09:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:23,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751639595] [2023-08-26 14:09:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:24,070 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 14:09:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:24,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751639595] [2023-08-26 14:09:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751639595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:24,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-26 14:09:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083598713] [2023-08-26 14:09:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 14:09:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 14:09:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-08-26 14:09:24,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 792 [2023-08-26 14:09:24,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 577 flow. Second operand has 12 states, 12 states have (on average 189.25) internal successors, (2271), 12 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states 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 14:09:24,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:24,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 792 [2023-08-26 14:09:24,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:25,015 INFO L124 PetriNetUnfolderBase]: 2478/4220 cut-off events. [2023-08-26 14:09:25,016 INFO L125 PetriNetUnfolderBase]: For 1034/1034 co-relation queries the response was YES. [2023-08-26 14:09:25,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10107 conditions, 4220 events. 2478/4220 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 20014 event pairs, 756 based on Foata normal form. 0/3264 useless extension candidates. Maximal degree in co-relation 10082. Up to 2637 conditions per place. [2023-08-26 14:09:25,038 INFO L140 encePairwiseOnDemand]: 779/792 looper letters, 124 selfloop transitions, 35 changer transitions 3/168 dead transitions. [2023-08-26 14:09:25,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 168 transitions, 1043 flow [2023-08-26 14:09:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 14:09:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 14:09:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2016 transitions. [2023-08-26 14:09:25,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2545454545454545 [2023-08-26 14:09:25,043 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2016 transitions. [2023-08-26 14:09:25,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2016 transitions. [2023-08-26 14:09:25,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:25,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2016 transitions. [2023-08-26 14:09:25,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.6) internal successors, (2016), 10 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 14:09:25,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 792.0) internal successors, (8712), 11 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 14:09:25,055 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 792.0) internal successors, (8712), 11 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 14:09:25,055 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 577 flow. Second operand 10 states and 2016 transitions. [2023-08-26 14:09:25,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 168 transitions, 1043 flow [2023-08-26 14:09:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 168 transitions, 1010 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-26 14:09:25,063 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 606 flow [2023-08-26 14:09:25,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=606, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2023-08-26 14:09:25,065 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -13 predicate places. [2023-08-26 14:09:25,065 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 606 flow [2023-08-26 14:09:25,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.25) internal successors, (2271), 12 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states 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 14:09:25,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:25,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:25,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 14:09:25,066 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:25,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash 814474763, now seen corresponding path program 1 times [2023-08-26 14:09:25,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:25,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775408707] [2023-08-26 14:09:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:25,782 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 14:09:25,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:25,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775408707] [2023-08-26 14:09:25,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775408707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:25,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:25,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-26 14:09:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145035917] [2023-08-26 14:09:25,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:25,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 14:09:25,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 14:09:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-26 14:09:25,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 792 [2023-08-26 14:09:25,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 606 flow. Second operand has 13 states, 13 states have (on average 198.30769230769232) internal successors, (2578), 13 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states 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 14:09:25,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:25,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 792 [2023-08-26 14:09:25,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:26,752 INFO L124 PetriNetUnfolderBase]: 2685/4570 cut-off events. [2023-08-26 14:09:26,752 INFO L125 PetriNetUnfolderBase]: For 1488/1488 co-relation queries the response was YES. [2023-08-26 14:09:26,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11365 conditions, 4570 events. 2685/4570 cut-off events. For 1488/1488 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22063 event pairs, 1948 based on Foata normal form. 0/3554 useless extension candidates. Maximal degree in co-relation 11340. Up to 4032 conditions per place. [2023-08-26 14:09:26,775 INFO L140 encePairwiseOnDemand]: 780/792 looper letters, 125 selfloop transitions, 25 changer transitions 3/159 dead transitions. [2023-08-26 14:09:26,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 159 transitions, 1112 flow [2023-08-26 14:09:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 14:09:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 14:09:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2294 transitions. [2023-08-26 14:09:26,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2633149678604224 [2023-08-26 14:09:26,779 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2294 transitions. [2023-08-26 14:09:26,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2294 transitions. [2023-08-26 14:09:26,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:26,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2294 transitions. [2023-08-26 14:09:26,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 208.54545454545453) internal successors, (2294), 11 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states 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 14:09:26,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 792.0) internal successors, (9504), 12 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states 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 14:09:26,789 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 792.0) internal successors, (9504), 12 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states 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 14:09:26,789 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 606 flow. Second operand 11 states and 2294 transitions. [2023-08-26 14:09:26,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 159 transitions, 1112 flow [2023-08-26 14:09:26,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 159 transitions, 1052 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-26 14:09:26,849 INFO L231 Difference]: Finished difference. Result has 132 places, 112 transitions, 709 flow [2023-08-26 14:09:26,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=709, PETRI_PLACES=132, PETRI_TRANSITIONS=112} [2023-08-26 14:09:26,850 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -6 predicate places. [2023-08-26 14:09:26,850 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 112 transitions, 709 flow [2023-08-26 14:09:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 198.30769230769232) internal successors, (2578), 13 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states 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 14:09:26,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:26,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:26,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 14:09:26,851 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:26,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash -176249866, now seen corresponding path program 1 times [2023-08-26 14:09:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764998020] [2023-08-26 14:09:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:26,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:27,648 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 14:09:27,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:27,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764998020] [2023-08-26 14:09:27,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764998020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:27,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:27,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-26 14:09:27,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514525094] [2023-08-26 14:09:27,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:27,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 14:09:27,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:27,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 14:09:27,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-26 14:09:27,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 792 [2023-08-26 14:09:27,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 112 transitions, 709 flow. Second operand has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states 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 14:09:27,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:27,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 792 [2023-08-26 14:09:27,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:28,918 INFO L124 PetriNetUnfolderBase]: 2653/4512 cut-off events. [2023-08-26 14:09:28,919 INFO L125 PetriNetUnfolderBase]: For 1623/1623 co-relation queries the response was YES. [2023-08-26 14:09:28,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11243 conditions, 4512 events. 2653/4512 cut-off events. For 1623/1623 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 21714 event pairs, 807 based on Foata normal form. 22/3658 useless extension candidates. Maximal degree in co-relation 11213. Up to 3013 conditions per place. [2023-08-26 14:09:28,941 INFO L140 encePairwiseOnDemand]: 780/792 looper letters, 132 selfloop transitions, 36 changer transitions 3/177 dead transitions. [2023-08-26 14:09:28,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 177 transitions, 1204 flow [2023-08-26 14:09:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 14:09:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 14:09:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2059 transitions. [2023-08-26 14:09:28,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25997474747474747 [2023-08-26 14:09:28,944 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2059 transitions. [2023-08-26 14:09:28,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2059 transitions. [2023-08-26 14:09:28,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:28,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2059 transitions. [2023-08-26 14:09:28,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states 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 14:09:28,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 792.0) internal successors, (8712), 11 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 14:09:28,951 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 792.0) internal successors, (8712), 11 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 14:09:28,951 INFO L175 Difference]: Start difference. First operand has 132 places, 112 transitions, 709 flow. Second operand 10 states and 2059 transitions. [2023-08-26 14:09:28,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 177 transitions, 1204 flow [2023-08-26 14:09:28,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 177 transitions, 1173 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-26 14:09:28,964 INFO L231 Difference]: Finished difference. Result has 138 places, 113 transitions, 777 flow [2023-08-26 14:09:28,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=777, PETRI_PLACES=138, PETRI_TRANSITIONS=113} [2023-08-26 14:09:28,964 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2023-08-26 14:09:28,964 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 113 transitions, 777 flow [2023-08-26 14:09:28,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states 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 14:09:28,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:28,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:28,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 14:09:28,965 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:28,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1720296833, now seen corresponding path program 1 times [2023-08-26 14:09:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:28,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036943031] [2023-08-26 14:09:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:29,175 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 14:09:29,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:29,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036943031] [2023-08-26 14:09:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036943031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:29,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:29,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 14:09:29,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008624553] [2023-08-26 14:09:29,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 14:09:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 14:09:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-26 14:09:29,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 792 [2023-08-26 14:09:29,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 113 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 216.9) internal successors, (2169), 10 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states 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 14:09:29,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:29,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 792 [2023-08-26 14:09:29,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:29,832 INFO L124 PetriNetUnfolderBase]: 2434/4173 cut-off events. [2023-08-26 14:09:29,833 INFO L125 PetriNetUnfolderBase]: For 2083/2083 co-relation queries the response was YES. [2023-08-26 14:09:29,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10626 conditions, 4173 events. 2434/4173 cut-off events. For 2083/2083 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19846 event pairs, 675 based on Foata normal form. 0/3492 useless extension candidates. Maximal degree in co-relation 10594. Up to 2460 conditions per place. [2023-08-26 14:09:29,852 INFO L140 encePairwiseOnDemand]: 784/792 looper letters, 118 selfloop transitions, 15 changer transitions 3/142 dead transitions. [2023-08-26 14:09:29,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 142 transitions, 1076 flow [2023-08-26 14:09:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 14:09:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 14:09:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1606 transitions. [2023-08-26 14:09:29,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2896825396825397 [2023-08-26 14:09:29,855 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1606 transitions. [2023-08-26 14:09:29,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1606 transitions. [2023-08-26 14:09:29,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:29,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1606 transitions. [2023-08-26 14:09:29,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 229.42857142857142) internal successors, (1606), 7 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states 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 14:09:29,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 792.0) internal successors, (6336), 8 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 14:09:29,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 792.0) internal successors, (6336), 8 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 14:09:29,862 INFO L175 Difference]: Start difference. First operand has 138 places, 113 transitions, 777 flow. Second operand 7 states and 1606 transitions. [2023-08-26 14:09:29,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 142 transitions, 1076 flow [2023-08-26 14:09:29,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 142 transitions, 1010 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-26 14:09:29,876 INFO L231 Difference]: Finished difference. Result has 135 places, 106 transitions, 677 flow [2023-08-26 14:09:29,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=677, PETRI_PLACES=135, PETRI_TRANSITIONS=106} [2023-08-26 14:09:29,876 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -3 predicate places. [2023-08-26 14:09:29,877 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 106 transitions, 677 flow [2023-08-26 14:09:29,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 216.9) internal successors, (2169), 10 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states 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 14:09:29,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:29,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:29,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 14:09:29,877 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:29,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:29,878 INFO L85 PathProgramCache]: Analyzing trace with hash 439769082, now seen corresponding path program 2 times [2023-08-26 14:09:29,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:29,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104191558] [2023-08-26 14:09:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:29,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:30,729 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 14:09:30,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:30,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104191558] [2023-08-26 14:09:30,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104191558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:30,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:30,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-26 14:09:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348962852] [2023-08-26 14:09:30,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:30,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 14:09:30,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:30,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 14:09:30,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-08-26 14:09:30,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 792 [2023-08-26 14:09:30,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 106 transitions, 677 flow. Second operand has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states 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 14:09:30,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:30,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 792 [2023-08-26 14:09:30,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:31,711 INFO L124 PetriNetUnfolderBase]: 2466/4227 cut-off events. [2023-08-26 14:09:31,711 INFO L125 PetriNetUnfolderBase]: For 2155/2155 co-relation queries the response was YES. [2023-08-26 14:09:31,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10682 conditions, 4227 events. 2466/4227 cut-off events. For 2155/2155 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20329 event pairs, 617 based on Foata normal form. 11/3553 useless extension candidates. Maximal degree in co-relation 10650. Up to 2335 conditions per place. [2023-08-26 14:09:31,733 INFO L140 encePairwiseOnDemand]: 781/792 looper letters, 129 selfloop transitions, 33 changer transitions 3/171 dead transitions. [2023-08-26 14:09:31,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 171 transitions, 1167 flow [2023-08-26 14:09:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 14:09:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 14:09:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2055 transitions. [2023-08-26 14:09:31,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25946969696969696 [2023-08-26 14:09:31,736 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2055 transitions. [2023-08-26 14:09:31,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2055 transitions. [2023-08-26 14:09:31,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:31,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2055 transitions. [2023-08-26 14:09:31,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.5) internal successors, (2055), 10 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states 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 14:09:31,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 792.0) internal successors, (8712), 11 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 14:09:31,744 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 792.0) internal successors, (8712), 11 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 14:09:31,744 INFO L175 Difference]: Start difference. First operand has 135 places, 106 transitions, 677 flow. Second operand 10 states and 2055 transitions. [2023-08-26 14:09:31,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 171 transitions, 1167 flow [2023-08-26 14:09:31,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 171 transitions, 1146 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 14:09:31,758 INFO L231 Difference]: Finished difference. Result has 142 places, 108 transitions, 756 flow [2023-08-26 14:09:31,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=756, PETRI_PLACES=142, PETRI_TRANSITIONS=108} [2023-08-26 14:09:31,759 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 4 predicate places. [2023-08-26 14:09:31,759 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 108 transitions, 756 flow [2023-08-26 14:09:31,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states 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 14:09:31,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:31,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:31,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 14:09:31,760 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:31,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash -521084032, now seen corresponding path program 3 times [2023-08-26 14:09:31,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:31,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808771014] [2023-08-26 14:09:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:31,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:32,760 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 14:09:32,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:32,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808771014] [2023-08-26 14:09:32,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808771014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:32,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:32,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-26 14:09:32,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935160435] [2023-08-26 14:09:32,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:32,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 14:09:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:32,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 14:09:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-08-26 14:09:32,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 792 [2023-08-26 14:09:32,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 108 transitions, 756 flow. Second operand has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states 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 14:09:32,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:32,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 792 [2023-08-26 14:09:32,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:34,326 INFO L124 PetriNetUnfolderBase]: 2450/4206 cut-off events. [2023-08-26 14:09:34,327 INFO L125 PetriNetUnfolderBase]: For 3065/3065 co-relation queries the response was YES. [2023-08-26 14:09:34,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10964 conditions, 4206 events. 2450/4206 cut-off events. For 3065/3065 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20174 event pairs, 1441 based on Foata normal form. 11/3532 useless extension candidates. Maximal degree in co-relation 10930. Up to 2843 conditions per place. [2023-08-26 14:09:34,345 INFO L140 encePairwiseOnDemand]: 780/792 looper letters, 130 selfloop transitions, 28 changer transitions 3/167 dead transitions. [2023-08-26 14:09:34,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 167 transitions, 1217 flow [2023-08-26 14:09:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 14:09:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 14:09:34,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2251 transitions. [2023-08-26 14:09:34,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25837924701561066 [2023-08-26 14:09:34,348 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2251 transitions. [2023-08-26 14:09:34,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2251 transitions. [2023-08-26 14:09:34,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:34,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2251 transitions. [2023-08-26 14:09:34,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 204.63636363636363) internal successors, (2251), 11 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states 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 14:09:34,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 792.0) internal successors, (9504), 12 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states 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 14:09:34,354 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 792.0) internal successors, (9504), 12 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states 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 14:09:34,354 INFO L175 Difference]: Start difference. First operand has 142 places, 108 transitions, 756 flow. Second operand 11 states and 2251 transitions. [2023-08-26 14:09:34,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 167 transitions, 1217 flow [2023-08-26 14:09:34,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 167 transitions, 1150 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-26 14:09:34,365 INFO L231 Difference]: Finished difference. Result has 144 places, 108 transitions, 754 flow [2023-08-26 14:09:34,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=754, PETRI_PLACES=144, PETRI_TRANSITIONS=108} [2023-08-26 14:09:34,366 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 6 predicate places. [2023-08-26 14:09:34,366 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 108 transitions, 754 flow [2023-08-26 14:09:34,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states 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 14:09:34,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:34,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:34,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-26 14:09:34,367 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:34,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1984808586, now seen corresponding path program 1 times [2023-08-26 14:09:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155040405] [2023-08-26 14:09:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:34,515 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 14:09:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:34,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155040405] [2023-08-26 14:09:34,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155040405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:34,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 14:09:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110149277] [2023-08-26 14:09:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:34,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 14:09:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 14:09:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 14:09:34,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 792 [2023-08-26 14:09:34,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 108 transitions, 754 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 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 14:09:34,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:34,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 792 [2023-08-26 14:09:34,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:35,159 INFO L124 PetriNetUnfolderBase]: 3126/5360 cut-off events. [2023-08-26 14:09:35,159 INFO L125 PetriNetUnfolderBase]: For 3682/3682 co-relation queries the response was YES. [2023-08-26 14:09:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13966 conditions, 5360 events. 3126/5360 cut-off events. For 3682/3682 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 27696 event pairs, 1455 based on Foata normal form. 0/4583 useless extension candidates. Maximal degree in co-relation 13933. Up to 4142 conditions per place. [2023-08-26 14:09:35,205 INFO L140 encePairwiseOnDemand]: 787/792 looper letters, 148 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2023-08-26 14:09:35,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 157 transitions, 1290 flow [2023-08-26 14:09:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 14:09:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 14:09:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1043 transitions. [2023-08-26 14:09:35,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32922979797979796 [2023-08-26 14:09:35,207 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1043 transitions. [2023-08-26 14:09:35,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1043 transitions. [2023-08-26 14:09:35,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:35,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1043 transitions. [2023-08-26 14:09:35,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 14:09:35,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 792.0) internal successors, (3960), 5 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states 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 14:09:35,211 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 792.0) internal successors, (3960), 5 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states 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 14:09:35,211 INFO L175 Difference]: Start difference. First operand has 144 places, 108 transitions, 754 flow. Second operand 4 states and 1043 transitions. [2023-08-26 14:09:35,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 157 transitions, 1290 flow [2023-08-26 14:09:35,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 157 transitions, 1220 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-26 14:09:35,229 INFO L231 Difference]: Finished difference. Result has 140 places, 109 transitions, 712 flow [2023-08-26 14:09:35,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=140, PETRI_TRANSITIONS=109} [2023-08-26 14:09:35,232 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2023-08-26 14:09:35,232 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 109 transitions, 712 flow [2023-08-26 14:09:35,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 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 14:09:35,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:35,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:35,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-26 14:09:35,233 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:35,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:35,233 INFO L85 PathProgramCache]: Analyzing trace with hash 754452333, now seen corresponding path program 1 times [2023-08-26 14:09:35,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:35,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757223613] [2023-08-26 14:09:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:35,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 14:09:35,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757223613] [2023-08-26 14:09:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757223613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 14:09:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196545906] [2023-08-26 14:09:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:35,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:09:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:09:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:09:35,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 792 [2023-08-26 14:09:35,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 109 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 14:09:35,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:35,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 792 [2023-08-26 14:09:35,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:35,620 INFO L124 PetriNetUnfolderBase]: 1952/3487 cut-off events. [2023-08-26 14:09:35,620 INFO L125 PetriNetUnfolderBase]: For 2611/2611 co-relation queries the response was YES. [2023-08-26 14:09:35,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9251 conditions, 3487 events. 1952/3487 cut-off events. For 2611/2611 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 17033 event pairs, 978 based on Foata normal form. 95/3262 useless extension candidates. Maximal degree in co-relation 9217. Up to 1805 conditions per place. [2023-08-26 14:09:35,635 INFO L140 encePairwiseOnDemand]: 788/792 looper letters, 101 selfloop transitions, 2 changer transitions 6/124 dead transitions. [2023-08-26 14:09:35,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 124 transitions, 980 flow [2023-08-26 14:09:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:09:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:09:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-08-26 14:09:35,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897306397306396 [2023-08-26 14:09:35,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-08-26 14:09:35,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-08-26 14:09:35,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:35,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-08-26 14:09:35,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 14:09:35,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:09:35,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:09:35,639 INFO L175 Difference]: Start difference. First operand has 140 places, 109 transitions, 712 flow. Second operand 3 states and 1043 transitions. [2023-08-26 14:09:35,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 124 transitions, 980 flow [2023-08-26 14:09:35,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 124 transitions, 972 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 14:09:35,650 INFO L231 Difference]: Finished difference. Result has 141 places, 107 transitions, 719 flow [2023-08-26 14:09:35,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=719, PETRI_PLACES=141, PETRI_TRANSITIONS=107} [2023-08-26 14:09:35,651 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 3 predicate places. [2023-08-26 14:09:35,651 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 107 transitions, 719 flow [2023-08-26 14:09:35,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 14:09:35,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:35,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:35,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-26 14:09:35,652 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:35,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash -157576193, now seen corresponding path program 1 times [2023-08-26 14:09:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:35,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036845572] [2023-08-26 14:09:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:35,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:35,728 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 14:09:35,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:35,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036845572] [2023-08-26 14:09:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036845572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:35,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:35,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 14:09:35,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984916658] [2023-08-26 14:09:35,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:35,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 14:09:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 14:09:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 14:09:35,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 792 [2023-08-26 14:09:35,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 107 transitions, 719 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 14:09:35,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:35,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 792 [2023-08-26 14:09:35,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:35,968 INFO L124 PetriNetUnfolderBase]: 1018/1927 cut-off events. [2023-08-26 14:09:35,969 INFO L125 PetriNetUnfolderBase]: For 1728/1728 co-relation queries the response was YES. [2023-08-26 14:09:35,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5605 conditions, 1927 events. 1018/1927 cut-off events. For 1728/1728 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8209 event pairs, 244 based on Foata normal form. 54/1879 useless extension candidates. Maximal degree in co-relation 5570. Up to 1522 conditions per place. [2023-08-26 14:09:35,978 INFO L140 encePairwiseOnDemand]: 786/792 looper letters, 99 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2023-08-26 14:09:35,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 120 transitions, 980 flow [2023-08-26 14:09:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 14:09:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 14:09:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1019 transitions. [2023-08-26 14:09:35,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42887205387205385 [2023-08-26 14:09:35,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1019 transitions. [2023-08-26 14:09:35,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1019 transitions. [2023-08-26 14:09:35,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:35,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1019 transitions. [2023-08-26 14:09:35,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states 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 14:09:35,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:09:35,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 792.0) internal successors, (3168), 4 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 14:09:35,982 INFO L175 Difference]: Start difference. First operand has 141 places, 107 transitions, 719 flow. Second operand 3 states and 1019 transitions. [2023-08-26 14:09:35,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 120 transitions, 980 flow [2023-08-26 14:09:35,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 120 transitions, 968 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-26 14:09:35,990 INFO L231 Difference]: Finished difference. Result has 140 places, 107 transitions, 719 flow [2023-08-26 14:09:35,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=719, PETRI_PLACES=140, PETRI_TRANSITIONS=107} [2023-08-26 14:09:35,990 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2023-08-26 14:09:35,990 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 107 transitions, 719 flow [2023-08-26 14:09:35,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 14:09:35,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:35,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:35,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-26 14:09:35,991 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:35,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1667264484, now seen corresponding path program 1 times [2023-08-26 14:09:35,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:35,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992842012] [2023-08-26 14:09:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:35,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:37,047 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 14:09:37,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:37,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992842012] [2023-08-26 14:09:37,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992842012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:37,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:37,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-08-26 14:09:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061982899] [2023-08-26 14:09:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:37,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 14:09:37,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 14:09:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-08-26 14:09:37,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 792 [2023-08-26 14:09:37,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 107 transitions, 719 flow. Second operand has 17 states, 17 states have (on average 185.7058823529412) internal successors, (3157), 17 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states 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 14:09:37,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:37,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 792 [2023-08-26 14:09:37,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:38,197 INFO L124 PetriNetUnfolderBase]: 1107/2068 cut-off events. [2023-08-26 14:09:38,197 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2023-08-26 14:09:38,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 2068 events. 1107/2068 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8775 event pairs, 492 based on Foata normal form. 0/1987 useless extension candidates. Maximal degree in co-relation 6032. Up to 1127 conditions per place. [2023-08-26 14:09:38,206 INFO L140 encePairwiseOnDemand]: 776/792 looper letters, 142 selfloop transitions, 46 changer transitions 18/211 dead transitions. [2023-08-26 14:09:38,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 211 transitions, 1423 flow [2023-08-26 14:09:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 14:09:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 14:09:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3860 transitions. [2023-08-26 14:09:38,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24368686868686867 [2023-08-26 14:09:38,210 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3860 transitions. [2023-08-26 14:09:38,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3860 transitions. [2023-08-26 14:09:38,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:38,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3860 transitions. [2023-08-26 14:09:38,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 193.0) internal successors, (3860), 20 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states 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 14:09:38,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 792.0) internal successors, (16632), 21 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states 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 14:09:38,221 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 792.0) internal successors, (16632), 21 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states 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 14:09:38,221 INFO L175 Difference]: Start difference. First operand has 140 places, 107 transitions, 719 flow. Second operand 20 states and 3860 transitions. [2023-08-26 14:09:38,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 211 transitions, 1423 flow [2023-08-26 14:09:38,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 211 transitions, 1413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 14:09:38,230 INFO L231 Difference]: Finished difference. Result has 163 places, 119 transitions, 898 flow [2023-08-26 14:09:38,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=898, PETRI_PLACES=163, PETRI_TRANSITIONS=119} [2023-08-26 14:09:38,231 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 25 predicate places. [2023-08-26 14:09:38,231 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 119 transitions, 898 flow [2023-08-26 14:09:38,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.7058823529412) internal successors, (3157), 17 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states 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 14:09:38,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:38,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:38,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-26 14:09:38,232 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:38,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash -108742024, now seen corresponding path program 2 times [2023-08-26 14:09:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:38,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601095151] [2023-08-26 14:09:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:38,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:39,321 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 14:09:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:39,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601095151] [2023-08-26 14:09:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601095151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:39,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:39,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-08-26 14:09:39,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192637449] [2023-08-26 14:09:39,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:39,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 14:09:39,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 14:09:39,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-08-26 14:09:39,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 792 [2023-08-26 14:09:39,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 119 transitions, 898 flow. Second operand has 17 states, 17 states have (on average 185.7058823529412) internal successors, (3157), 17 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states 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 14:09:39,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:39,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 792 [2023-08-26 14:09:39,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:40,638 INFO L124 PetriNetUnfolderBase]: 1380/2589 cut-off events. [2023-08-26 14:09:40,638 INFO L125 PetriNetUnfolderBase]: For 2375/2375 co-relation queries the response was YES. [2023-08-26 14:09:40,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7662 conditions, 2589 events. 1380/2589 cut-off events. For 2375/2375 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11950 event pairs, 370 based on Foata normal form. 9/2502 useless extension candidates. Maximal degree in co-relation 7621. Up to 917 conditions per place. [2023-08-26 14:09:40,652 INFO L140 encePairwiseOnDemand]: 773/792 looper letters, 161 selfloop transitions, 55 changer transitions 19/240 dead transitions. [2023-08-26 14:09:40,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 240 transitions, 1694 flow [2023-08-26 14:09:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 14:09:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 14:09:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4066 transitions. [2023-08-26 14:09:40,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24446849446849447 [2023-08-26 14:09:40,657 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4066 transitions. [2023-08-26 14:09:40,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4066 transitions. [2023-08-26 14:09:40,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:40,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4066 transitions. [2023-08-26 14:09:40,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 193.61904761904762) internal successors, (4066), 21 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states 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 14:09:40,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 792.0) internal successors, (17424), 22 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states 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 14:09:40,672 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 792.0) internal successors, (17424), 22 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states 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 14:09:40,672 INFO L175 Difference]: Start difference. First operand has 163 places, 119 transitions, 898 flow. Second operand 21 states and 4066 transitions. [2023-08-26 14:09:40,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 240 transitions, 1694 flow [2023-08-26 14:09:40,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 240 transitions, 1593 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-08-26 14:09:40,687 INFO L231 Difference]: Finished difference. Result has 175 places, 127 transitions, 1002 flow [2023-08-26 14:09:40,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1002, PETRI_PLACES=175, PETRI_TRANSITIONS=127} [2023-08-26 14:09:40,688 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 37 predicate places. [2023-08-26 14:09:40,688 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 127 transitions, 1002 flow [2023-08-26 14:09:40,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.7058823529412) internal successors, (3157), 17 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states 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 14:09:40,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:40,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:40,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-26 14:09:40,689 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:40,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:40,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1372647710, now seen corresponding path program 3 times [2023-08-26 14:09:40,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:40,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140245037] [2023-08-26 14:09:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:40,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 14:09:41,762 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 14:09:41,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 14:09:41,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140245037] [2023-08-26 14:09:41,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140245037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 14:09:41,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 14:09:41,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-08-26 14:09:41,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880437713] [2023-08-26 14:09:41,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 14:09:41,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 14:09:41,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 14:09:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 14:09:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-26 14:09:41,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 792 [2023-08-26 14:09:41,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 127 transitions, 1002 flow. Second operand has 17 states, 17 states have (on average 185.7058823529412) internal successors, (3157), 17 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states 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 14:09:41,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 14:09:41,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 792 [2023-08-26 14:09:41,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 14:09:42,812 INFO L124 PetriNetUnfolderBase]: 1174/2205 cut-off events. [2023-08-26 14:09:42,812 INFO L125 PetriNetUnfolderBase]: For 3058/3058 co-relation queries the response was YES. [2023-08-26 14:09:42,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7198 conditions, 2205 events. 1174/2205 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 9624 event pairs, 210 based on Foata normal form. 14/2163 useless extension candidates. Maximal degree in co-relation 7154. Up to 824 conditions per place. [2023-08-26 14:09:42,827 INFO L140 encePairwiseOnDemand]: 777/792 looper letters, 133 selfloop transitions, 46 changer transitions 12/196 dead transitions. [2023-08-26 14:09:42,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 196 transitions, 1564 flow [2023-08-26 14:09:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 14:09:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 14:09:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2719 transitions. [2023-08-26 14:09:42,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24522005772005773 [2023-08-26 14:09:42,830 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2719 transitions. [2023-08-26 14:09:42,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2719 transitions. [2023-08-26 14:09:42,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 14:09:42,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2719 transitions. [2023-08-26 14:09:42,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 194.21428571428572) internal successors, (2719), 14 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states 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 14:09:42,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 792.0) internal successors, (11880), 15 states have internal predecessors, (11880), 0 states have call successors, (0), 0 states 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 14:09:42,841 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 792.0) internal successors, (11880), 15 states have internal predecessors, (11880), 0 states have call successors, (0), 0 states 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 14:09:42,841 INFO L175 Difference]: Start difference. First operand has 175 places, 127 transitions, 1002 flow. Second operand 14 states and 2719 transitions. [2023-08-26 14:09:42,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 196 transitions, 1564 flow [2023-08-26 14:09:42,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 196 transitions, 1477 flow, removed 6 selfloop flow, removed 16 redundant places. [2023-08-26 14:09:42,857 INFO L231 Difference]: Finished difference. Result has 175 places, 130 transitions, 1063 flow [2023-08-26 14:09:42,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=792, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1063, PETRI_PLACES=175, PETRI_TRANSITIONS=130} [2023-08-26 14:09:42,858 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 37 predicate places. [2023-08-26 14:09:42,858 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 130 transitions, 1063 flow [2023-08-26 14:09:42,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.7058823529412) internal successors, (3157), 17 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states 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 14:09:42,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 14:09:42,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:09:42,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-26 14:09:42,859 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 138 more)] === [2023-08-26 14:09:42,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 14:09:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 988538722, now seen corresponding path program 1 times [2023-08-26 14:09:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 14:09:42,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546498220] [2023-08-26 14:09:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 14:09:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 14:09:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-08-26 14:21:08,576 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,578 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,579 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,582 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,583 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,584 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,600 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,601 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,602 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-26 14:21:08,606 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (140 of 141 remaining) [2023-08-26 14:21:08,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-26 14:21:08,606 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. [2023-08-26 14:21:08,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (139 of 141 remaining) [2023-08-26 14:21:08,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (138 of 141 remaining) [2023-08-26 14:21:08,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (137 of 141 remaining) [2023-08-26 14:21:08,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (136 of 141 remaining) [2023-08-26 14:21:08,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (135 of 141 remaining) [2023-08-26 14:21:08,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (134 of 141 remaining) [2023-08-26 14:21:08,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (133 of 141 remaining) [2023-08-26 14:21:08,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (132 of 141 remaining) [2023-08-26 14:21:08,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (131 of 141 remaining) [2023-08-26 14:21:08,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (130 of 141 remaining) [2023-08-26 14:21:08,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONASSERT (129 of 141 remaining) [2023-08-26 14:21:08,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (128 of 141 remaining) [2023-08-26 14:21:08,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (127 of 141 remaining) [2023-08-26 14:21:08,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (126 of 141 remaining) [2023-08-26 14:21:08,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (125 of 141 remaining) [2023-08-26 14:21:08,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (124 of 141 remaining) [2023-08-26 14:21:08,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 141 remaining) [2023-08-26 14:21:08,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 141 remaining) [2023-08-26 14:21:08,611 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 141 remaining) [2023-08-26 14:21:08,611 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (120 of 141 remaining) [2023-08-26 14:21:08,611 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (119 of 141 remaining) [2023-08-26 14:21:08,611 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 141 remaining) [2023-08-26 14:21:08,611 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 141 remaining) [2023-08-26 14:21:08,611 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 141 remaining) [2023-08-26 14:21:08,612 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 141 remaining) [2023-08-26 14:21:08,612 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 141 remaining) [2023-08-26 14:21:08,612 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 141 remaining) [2023-08-26 14:21:08,612 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 141 remaining) [2023-08-26 14:21:08,612 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 141 remaining) [2023-08-26 14:21:08,612 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 141 remaining) [2023-08-26 14:21:08,612 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 141 remaining) [2023-08-26 14:21:08,613 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 141 remaining) [2023-08-26 14:21:08,613 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 141 remaining) [2023-08-26 14:21:08,613 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 141 remaining) [2023-08-26 14:21:08,613 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 141 remaining) [2023-08-26 14:21:08,613 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 141 remaining) [2023-08-26 14:21:08,613 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 141 remaining) [2023-08-26 14:21:08,614 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 141 remaining) [2023-08-26 14:21:08,614 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 141 remaining) [2023-08-26 14:21:08,614 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err40ASSERT_VIOLATIONASSERT (100 of 141 remaining) [2023-08-26 14:21:08,614 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 141 remaining) [2023-08-26 14:21:08,614 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 141 remaining) [2023-08-26 14:21:08,614 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 141 remaining) [2023-08-26 14:21:08,614 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 141 remaining) [2023-08-26 14:21:08,615 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 141 remaining) [2023-08-26 14:21:08,615 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 141 remaining) [2023-08-26 14:21:08,615 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 141 remaining) [2023-08-26 14:21:08,615 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 141 remaining) [2023-08-26 14:21:08,615 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 141 remaining) [2023-08-26 14:21:08,615 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 141 remaining) [2023-08-26 14:21:08,615 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 141 remaining) [2023-08-26 14:21:08,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 141 remaining) [2023-08-26 14:21:08,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 141 remaining) [2023-08-26 14:21:08,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 141 remaining) [2023-08-26 14:21:08,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 141 remaining) [2023-08-26 14:21:08,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 141 remaining) [2023-08-26 14:21:08,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 141 remaining) [2023-08-26 14:21:08,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 141 remaining) [2023-08-26 14:21:08,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 141 remaining) [2023-08-26 14:21:08,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 141 remaining) [2023-08-26 14:21:08,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 141 remaining) [2023-08-26 14:21:08,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 141 remaining) [2023-08-26 14:21:08,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 141 remaining) [2023-08-26 14:21:08,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 141 remaining) [2023-08-26 14:21:08,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 141 remaining) [2023-08-26 14:21:08,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 141 remaining) [2023-08-26 14:21:08,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 141 remaining) [2023-08-26 14:21:08,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 141 remaining) [2023-08-26 14:21:08,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 141 remaining) [2023-08-26 14:21:08,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 141 remaining) [2023-08-26 14:21:08,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 141 remaining) [2023-08-26 14:21:08,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 141 remaining) [2023-08-26 14:21:08,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 141 remaining) [2023-08-26 14:21:08,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 141 remaining) [2023-08-26 14:21:08,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 141 remaining) [2023-08-26 14:21:08,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 141 remaining) [2023-08-26 14:21:08,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 141 remaining) [2023-08-26 14:21:08,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 141 remaining) [2023-08-26 14:21:08,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 141 remaining) [2023-08-26 14:21:08,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 141 remaining) [2023-08-26 14:21:08,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err18ASSERT_VIOLATIONASSERT (59 of 141 remaining) [2023-08-26 14:21:08,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 141 remaining) [2023-08-26 14:21:08,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 141 remaining) [2023-08-26 14:21:08,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 141 remaining) [2023-08-26 14:21:08,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 141 remaining) [2023-08-26 14:21:08,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 141 remaining) [2023-08-26 14:21:08,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 141 remaining) [2023-08-26 14:21:08,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 141 remaining) [2023-08-26 14:21:08,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 141 remaining) [2023-08-26 14:21:08,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 141 remaining) [2023-08-26 14:21:08,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 141 remaining) [2023-08-26 14:21:08,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 141 remaining) [2023-08-26 14:21:08,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 141 remaining) [2023-08-26 14:21:08,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 141 remaining) [2023-08-26 14:21:08,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 141 remaining) [2023-08-26 14:21:08,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err40ASSERT_VIOLATIONASSERT (40 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 141 remaining) [2023-08-26 14:21:08,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 141 remaining) [2023-08-26 14:21:08,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 141 remaining) [2023-08-26 14:21:08,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 141 remaining) [2023-08-26 14:21:08,625 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 14:21:08,628 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 141 remaining) [2023-08-26 14:21:08,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 141 remaining) [2023-08-26 14:21:08,634 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 141 remaining) [2023-08-26 14:21:08,634 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 141 remaining) [2023-08-26 14:21:08,634 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 141 remaining) [2023-08-26 14:21:08,634 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err18ASSERT_VIOLATIONASSERT (0 of 141 remaining) [2023-08-26 14:21:08,634 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 14:21:08,639 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 14:21:08,639 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 14:21:08,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:21:08 BasicIcfg [2023-08-26 14:21:08,642 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 14:21:08,642 INFO L158 Benchmark]: Toolchain (without parser) took 782908.43ms. Allocated memory was 400.6MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 373.8MB in the beginning and 3.3GB in the end (delta: -2.9GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-08-26 14:21:08,642 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 400.6MB. Free memory was 377.1MB in the beginning and 377.0MB in the end (delta: 169.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 14:21:08,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.51ms. Allocated memory is still 400.6MB. Free memory was 373.8MB in the beginning and 343.4MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-26 14:21:08,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.56ms. Allocated memory is still 400.6MB. Free memory was 343.4MB in the beginning and 340.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 14:21:08,643 INFO L158 Benchmark]: Boogie Preprocessor took 56.06ms. Allocated memory is still 400.6MB. Free memory was 340.5MB in the beginning and 338.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 14:21:08,643 INFO L158 Benchmark]: RCFGBuilder took 628.91ms. Allocated memory is still 400.6MB. Free memory was 338.4MB in the beginning and 304.4MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-08-26 14:21:08,643 INFO L158 Benchmark]: TraceAbstraction took 781549.80ms. Allocated memory was 400.6MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 303.6MB in the beginning and 3.3GB in the end (delta: -3.0GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-08-26 14:21:08,644 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 400.6MB. Free memory was 377.1MB in the beginning and 377.0MB in the end (delta: 169.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 593.51ms. Allocated memory is still 400.6MB. Free memory was 373.8MB in the beginning and 343.4MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 74.56ms. Allocated memory is still 400.6MB. Free memory was 343.4MB in the beginning and 340.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 56.06ms. Allocated memory is still 400.6MB. Free memory was 340.5MB in the beginning and 338.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 628.91ms. Allocated memory is still 400.6MB. Free memory was 338.4MB in the beginning and 304.4MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 781549.80ms. Allocated memory was 400.6MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 303.6MB in the beginning and 3.3GB in the end (delta: -3.0GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 750]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [750] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.8s, 324 PlacesBefore, 138 PlacesAfterwards, 335 TransitionsBefore, 141 TransitionsAfterwards, 30836 CoEnabledTransitionPairs, 8 FixpointIterations, 109 TrivialSequentialCompositions, 300 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 23 ConcurrentYvCompositions, 8 ChoiceCompositions, 446 TotalNumberOfCompositions, 110142 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44587, independent: 43353, independent conditional: 0, independent unconditional: 43353, dependent: 1234, dependent conditional: 0, dependent unconditional: 1234, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 19324, independent: 19170, independent conditional: 0, independent unconditional: 19170, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 44587, independent: 24183, independent conditional: 0, independent unconditional: 24183, dependent: 1080, dependent conditional: 0, dependent unconditional: 1080, unknown: 19324, unknown conditional: 0, unknown unconditional: 19324] , Statistics on independence cache: Total cache size (in pairs): 1076, Positive cache size: 987, Positive conditional cache size: 0, Positive unconditional cache size: 987, Negative cache size: 89, Negative conditional cache size: 0, Negative unconditional cache size: 89, 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 CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: 1062]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 32 interpolants. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 556 locations, 141 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: 781.3s, OverallIterations: 34, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 61.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3137 SdHoareTripleChecker+Valid, 38.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3137 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 36.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 271 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12766 IncrementalHoareTripleChecker+Invalid, 13037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 271 mSolverCounterUnsat, 36 mSDtfsCounter, 12766 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1063occurred in iteration=33, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 18972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 2/2 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 [2023-08-26 14:21:08,729 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 !ENTRY org.eclipse.osgi 4 0 2023-08-26 14:21:08.925 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f1be8f9/.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/f2f1be8f9/.metadata/.log.