/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:28:33,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:28:33,461 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:28:33,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:28:33,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:28:33,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:28:33,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:28:33,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:28:33,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:28:33,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:28:33,496 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:28:33,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:28:33,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:28:33,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:28:33,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:28:33,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:28:33,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:28:33,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:28:33,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:28:33,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:28:33,499 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:28:33,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:28:33,499 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:28:33,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:28:33,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:28:33,500 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:28:33,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:28:33,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:28:33,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:28:33,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:28:33,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:28:33,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:28:33,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:28:33,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:28:33,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:28:33,502 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:28:33,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:28:33,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:28:33,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:28:33,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:28:33,755 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:28:33,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-26 12:28:34,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:28:34,921 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:28:34,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-26 12:28:34,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa361c8d/a3b5b7ddc2df4bc1a939cab50ea1ccb8/FLAG9e6761700 [2023-08-26 12:28:34,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa361c8d/a3b5b7ddc2df4bc1a939cab50ea1ccb8 [2023-08-26 12:28:34,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:28:34,956 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:28:34,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:28:34,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:28:34,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:28:34,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:28:34" (1/1) ... [2023-08-26 12:28:34,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f48ce9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:34, skipping insertion in model container [2023-08-26 12:28:34,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:28:34" (1/1) ... [2023-08-26 12:28:34,979 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:28:35,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:28:35,242 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:28:35,265 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 12:28:35,266 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-26 12:28:35,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:28:35,309 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:28:35,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35 WrapperNode [2023-08-26 12:28:35,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:28:35,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:28:35,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:28:35,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:28:35,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,359 INFO L138 Inliner]: procedures = 165, calls = 36, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 125 [2023-08-26 12:28:35,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:28:35,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:28:35,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:28:35,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:28:35,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:28:35,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:28:35,395 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:28:35,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:28:35,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (1/1) ... [2023-08-26 12:28:35,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:28:35,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:28:35,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 12:28:35,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 12:28:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:28:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-26 12:28:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-26 12:28:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:28:35,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:28:35,451 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:28:35,543 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:28:35,545 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:28:35,719 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:28:35,724 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:28:35,725 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 12:28:35,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:28:35 BoogieIcfgContainer [2023-08-26 12:28:35,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:28:35,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:28:35,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:28:35,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:28:35,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:28:34" (1/3) ... [2023-08-26 12:28:35,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542361d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:28:35, skipping insertion in model container [2023-08-26 12:28:35,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:28:35" (2/3) ... [2023-08-26 12:28:35,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542361d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:28:35, skipping insertion in model container [2023-08-26 12:28:35,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:28:35" (3/3) ... [2023-08-26 12:28:35,737 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-26 12:28:35,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:28:35,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-08-26 12:28:35,749 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:28:35,840 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:28:35,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 159 transitions, 323 flow [2023-08-26 12:28:35,934 INFO L124 PetriNetUnfolderBase]: 12/158 cut-off events. [2023-08-26 12:28:35,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:35,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 158 events. 12/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 376 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-08-26 12:28:35,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 159 transitions, 323 flow [2023-08-26 12:28:35,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 158 transitions, 319 flow [2023-08-26 12:28:35,950 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:28:35,958 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 158 transitions, 319 flow [2023-08-26 12:28:35,960 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 158 transitions, 319 flow [2023-08-26 12:28:35,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 158 transitions, 319 flow [2023-08-26 12:28:36,000 INFO L124 PetriNetUnfolderBase]: 12/158 cut-off events. [2023-08-26 12:28:36,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:36,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 158 events. 12/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 378 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-08-26 12:28:36,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 6384 [2023-08-26 12:28:40,107 INFO L134 LiptonReduction]: Checked pairs total: 10753 [2023-08-26 12:28:40,107 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-08-26 12:28:40,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:28:40,120 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;@68f91191, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:28:40,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-26 12:28:40,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:28:40,121 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:28:40,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:40,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:40,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:28:40,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:40,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:40,125 INFO L85 PathProgramCache]: Analyzing trace with hash 657, now seen corresponding path program 1 times [2023-08-26 12:28:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:40,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168616521] [2023-08-26 12:28:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:40,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:40,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:40,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168616521] [2023-08-26 12:28:40,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168616521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:40,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:40,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:28:40,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321404177] [2023-08-26 12:28:40,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:40,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:28:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:40,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:28:40,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:28:40,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 337 [2023-08-26 12:28:40,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 101 flow. Second operand has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:40,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 337 [2023-08-26 12:28:40,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:40,311 INFO L124 PetriNetUnfolderBase]: 174/349 cut-off events. [2023-08-26 12:28:40,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:40,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 349 events. 174/349 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1529 event pairs, 116 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 659. Up to 315 conditions per place. [2023-08-26 12:28:40,315 INFO L140 encePairwiseOnDemand]: 323/337 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-08-26 12:28:40,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 129 flow [2023-08-26 12:28:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:28:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:28:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 338 transitions. [2023-08-26 12:28:40,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014836795252225 [2023-08-26 12:28:40,324 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 338 transitions. [2023-08-26 12:28:40,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 338 transitions. [2023-08-26 12:28:40,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:40,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 338 transitions. [2023-08-26 12:28:40,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,333 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,334 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 101 flow. Second operand 2 states and 338 transitions. [2023-08-26 12:28:40,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 129 flow [2023-08-26 12:28:40,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:28:40,337 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 72 flow [2023-08-26 12:28:40,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2023-08-26 12:28:40,340 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -13 predicate places. [2023-08-26 12:28:40,340 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 72 flow [2023-08-26 12:28:40,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:40,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 12:28:40,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:28:40,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:40,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash 20052925, now seen corresponding path program 1 times [2023-08-26 12:28:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:40,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364062975] [2023-08-26 12:28:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:40,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:40,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364062975] [2023-08-26 12:28:40,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364062975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:40,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:40,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:28:40,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692607496] [2023-08-26 12:28:40,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:40,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:28:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:40,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:28:40,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:28:40,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 337 [2023-08-26 12:28:40,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:40,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 337 [2023-08-26 12:28:40,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:40,682 INFO L124 PetriNetUnfolderBase]: 178/345 cut-off events. [2023-08-26 12:28:40,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:40,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 345 events. 178/345 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1443 event pairs, 119 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 669. Up to 322 conditions per place. [2023-08-26 12:28:40,685 INFO L140 encePairwiseOnDemand]: 335/337 looper letters, 28 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-26 12:28:40,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 128 flow [2023-08-26 12:28:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:28:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:28:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-08-26 12:28:40,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3590504451038576 [2023-08-26 12:28:40,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-08-26 12:28:40,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-08-26 12:28:40,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:40,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-08-26 12:28:40,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,695 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 72 flow. Second operand 3 states and 363 transitions. [2023-08-26 12:28:40,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 128 flow [2023-08-26 12:28:40,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:28:40,697 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 72 flow [2023-08-26 12:28:40,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-26 12:28:40,697 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -12 predicate places. [2023-08-26 12:28:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 72 flow [2023-08-26 12:28:40,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:40,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 12:28:40,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:28:40,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:40,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash 20052924, now seen corresponding path program 1 times [2023-08-26 12:28:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:40,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084292725] [2023-08-26 12:28:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:40,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:40,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:40,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084292725] [2023-08-26 12:28:40,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084292725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:40,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:40,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:28:40,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490773797] [2023-08-26 12:28:40,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:40,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:28:40,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:28:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:28:40,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 337 [2023-08-26 12:28:40,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:40,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 337 [2023-08-26 12:28:40,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:40,854 INFO L124 PetriNetUnfolderBase]: 178/329 cut-off events. [2023-08-26 12:28:40,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:40,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 329 events. 178/329 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1353 event pairs, 101 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 654. Up to 284 conditions per place. [2023-08-26 12:28:40,857 INFO L140 encePairwiseOnDemand]: 334/337 looper letters, 47 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-26 12:28:40,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 206 flow [2023-08-26 12:28:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:28:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:28:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-08-26 12:28:40,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37289812067260136 [2023-08-26 12:28:40,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-08-26 12:28:40,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-08-26 12:28:40,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:40,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-08-26 12:28:40,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,861 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 72 flow. Second operand 3 states and 377 transitions. [2023-08-26 12:28:40,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 206 flow [2023-08-26 12:28:40,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:28:40,862 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 73 flow [2023-08-26 12:28:40,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-26 12:28:40,863 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -12 predicate places. [2023-08-26 12:28:40,865 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 73 flow [2023-08-26 12:28:40,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:40,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:28:40,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:28:40,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:40,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:40,866 INFO L85 PathProgramCache]: Analyzing trace with hash 621491334, now seen corresponding path program 1 times [2023-08-26 12:28:40,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:40,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373472124] [2023-08-26 12:28:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:40,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:40,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373472124] [2023-08-26 12:28:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373472124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:40,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:40,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:28:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992698338] [2023-08-26 12:28:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:40,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:28:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:28:40,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:28:40,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 337 [2023-08-26 12:28:40,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:40,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:40,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 337 [2023-08-26 12:28:40,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:41,063 INFO L124 PetriNetUnfolderBase]: 179/325 cut-off events. [2023-08-26 12:28:41,064 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-26 12:28:41,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 325 events. 179/325 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1277 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 671. Up to 313 conditions per place. [2023-08-26 12:28:41,065 INFO L140 encePairwiseOnDemand]: 333/337 looper letters, 38 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-26 12:28:41,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 171 flow [2023-08-26 12:28:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:28:41,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:28:41,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-08-26 12:28:41,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.327893175074184 [2023-08-26 12:28:41,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-08-26 12:28:41,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-08-26 12:28:41,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:41,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-08-26 12:28:41,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,070 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 73 flow. Second operand 4 states and 442 transitions. [2023-08-26 12:28:41,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 171 flow [2023-08-26 12:28:41,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 165 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:28:41,071 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 75 flow [2023-08-26 12:28:41,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-08-26 12:28:41,072 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -12 predicate places. [2023-08-26 12:28:41,072 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 75 flow [2023-08-26 12:28:41,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:41,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:28:41,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:28:41,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:41,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:41,073 INFO L85 PathProgramCache]: Analyzing trace with hash 621491333, now seen corresponding path program 1 times [2023-08-26 12:28:41,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:41,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241390871] [2023-08-26 12:28:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:41,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241390871] [2023-08-26 12:28:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241390871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:41,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:41,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:28:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837320920] [2023-08-26 12:28:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:28:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:28:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:28:41,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 337 [2023-08-26 12:28:41,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:41,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 337 [2023-08-26 12:28:41,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:41,227 INFO L124 PetriNetUnfolderBase]: 127/242 cut-off events. [2023-08-26 12:28:41,228 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-26 12:28:41,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 242 events. 127/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 922 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 512. Up to 186 conditions per place. [2023-08-26 12:28:41,229 INFO L140 encePairwiseOnDemand]: 318/337 looper letters, 52 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2023-08-26 12:28:41,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 68 transitions, 288 flow [2023-08-26 12:28:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:28:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:28:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 568 transitions. [2023-08-26 12:28:41,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3370919881305638 [2023-08-26 12:28:41,232 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 568 transitions. [2023-08-26 12:28:41,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 568 transitions. [2023-08-26 12:28:41,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:41,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 568 transitions. [2023-08-26 12:28:41,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,236 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,236 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 75 flow. Second operand 5 states and 568 transitions. [2023-08-26 12:28:41,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 68 transitions, 288 flow [2023-08-26 12:28:41,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:28:41,238 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 213 flow [2023-08-26 12:28:41,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-08-26 12:28:41,239 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2023-08-26 12:28:41,239 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 213 flow [2023-08-26 12:28:41,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:41,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:28:41,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:28:41,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr7ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:41,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2086368200, now seen corresponding path program 1 times [2023-08-26 12:28:41,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:41,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493332347] [2023-08-26 12:28:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:41,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493332347] [2023-08-26 12:28:41,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493332347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:41,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:41,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:28:41,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565896382] [2023-08-26 12:28:41,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:28:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:28:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:28:41,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 337 [2023-08-26 12:28:41,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:41,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 337 [2023-08-26 12:28:41,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:41,344 INFO L124 PetriNetUnfolderBase]: 182/353 cut-off events. [2023-08-26 12:28:41,345 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-08-26 12:28:41,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 353 events. 182/353 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1406 event pairs, 30 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 977. Up to 216 conditions per place. [2023-08-26 12:28:41,346 INFO L140 encePairwiseOnDemand]: 329/337 looper letters, 57 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2023-08-26 12:28:41,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 465 flow [2023-08-26 12:28:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:28:41,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:28:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-08-26 12:28:41,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827893175074184 [2023-08-26 12:28:41,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-08-26 12:28:41,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-08-26 12:28:41,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:41,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-08-26 12:28:41,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,350 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 213 flow. Second operand 3 states and 387 transitions. [2023-08-26 12:28:41,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 465 flow [2023-08-26 12:28:41,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 461 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-26 12:28:41,354 INFO L231 Difference]: Finished difference. Result has 46 places, 54 transitions, 329 flow [2023-08-26 12:28:41,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=46, PETRI_TRANSITIONS=54} [2023-08-26 12:28:41,355 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-08-26 12:28:41,355 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 54 transitions, 329 flow [2023-08-26 12:28:41,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:41,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:28:41,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:28:41,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:41,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2086365722, now seen corresponding path program 1 times [2023-08-26 12:28:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039455603] [2023-08-26 12:28:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:41,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039455603] [2023-08-26 12:28:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039455603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:41,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:28:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789644011] [2023-08-26 12:28:41,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:41,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:28:41,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:28:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:28:41,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 337 [2023-08-26 12:28:41,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 54 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:41,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 337 [2023-08-26 12:28:41,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:41,559 INFO L124 PetriNetUnfolderBase]: 208/416 cut-off events. [2023-08-26 12:28:41,559 INFO L125 PetriNetUnfolderBase]: For 528/528 co-relation queries the response was YES. [2023-08-26 12:28:41,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 416 events. 208/416 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1584 event pairs, 59 based on Foata normal form. 32/423 useless extension candidates. Maximal degree in co-relation 1326. Up to 314 conditions per place. [2023-08-26 12:28:41,561 INFO L140 encePairwiseOnDemand]: 330/337 looper letters, 76 selfloop transitions, 9 changer transitions 5/91 dead transitions. [2023-08-26 12:28:41,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 653 flow [2023-08-26 12:28:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:28:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:28:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-08-26 12:28:41,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566765578635015 [2023-08-26 12:28:41,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-08-26 12:28:41,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-08-26 12:28:41,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:41,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-08-26 12:28:41,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,566 INFO L175 Difference]: Start difference. First operand has 46 places, 54 transitions, 329 flow. Second operand 5 states and 601 transitions. [2023-08-26 12:28:41,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 653 flow [2023-08-26 12:28:41,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 91 transitions, 625 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 12:28:41,570 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 387 flow [2023-08-26 12:28:41,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2023-08-26 12:28:41,570 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-26 12:28:41,570 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 387 flow [2023-08-26 12:28:41,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:41,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:41,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:28:41,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:41,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:41,571 INFO L85 PathProgramCache]: Analyzing trace with hash 250507918, now seen corresponding path program 1 times [2023-08-26 12:28:41,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:41,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680463827] [2023-08-26 12:28:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:41,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680463827] [2023-08-26 12:28:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680463827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:41,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:41,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:28:41,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343858876] [2023-08-26 12:28:41,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:41,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:28:41,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:28:41,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:28:41,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 337 [2023-08-26 12:28:41,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:41,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 337 [2023-08-26 12:28:41,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:41,758 INFO L124 PetriNetUnfolderBase]: 206/404 cut-off events. [2023-08-26 12:28:41,758 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-26 12:28:41,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 404 events. 206/404 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1490 event pairs, 78 based on Foata normal form. 14/393 useless extension candidates. Maximal degree in co-relation 1341. Up to 317 conditions per place. [2023-08-26 12:28:41,760 INFO L140 encePairwiseOnDemand]: 326/337 looper letters, 63 selfloop transitions, 11 changer transitions 3/78 dead transitions. [2023-08-26 12:28:41,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 78 transitions, 627 flow [2023-08-26 12:28:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:28:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:28:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2023-08-26 12:28:41,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31572700296735906 [2023-08-26 12:28:41,762 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2023-08-26 12:28:41,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2023-08-26 12:28:41,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:41,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2023-08-26 12:28:41,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,765 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,765 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 387 flow. Second operand 5 states and 532 transitions. [2023-08-26 12:28:41,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 78 transitions, 627 flow [2023-08-26 12:28:41,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 78 transitions, 621 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-26 12:28:41,768 INFO L231 Difference]: Finished difference. Result has 53 places, 58 transitions, 430 flow [2023-08-26 12:28:41,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=53, PETRI_TRANSITIONS=58} [2023-08-26 12:28:41,768 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-08-26 12:28:41,769 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 58 transitions, 430 flow [2023-08-26 12:28:41,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:41,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:41,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:28:41,769 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:41,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash 396106858, now seen corresponding path program 2 times [2023-08-26 12:28:41,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:41,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530767921] [2023-08-26 12:28:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:41,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:41,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:41,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530767921] [2023-08-26 12:28:41,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530767921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:41,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:41,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:28:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107081181] [2023-08-26 12:28:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:28:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:28:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:28:41,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 337 [2023-08-26 12:28:41,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:41,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 337 [2023-08-26 12:28:41,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:41,930 INFO L124 PetriNetUnfolderBase]: 206/402 cut-off events. [2023-08-26 12:28:41,930 INFO L125 PetriNetUnfolderBase]: For 866/866 co-relation queries the response was YES. [2023-08-26 12:28:41,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 402 events. 206/402 cut-off events. For 866/866 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1445 event pairs, 78 based on Foata normal form. 2/379 useless extension candidates. Maximal degree in co-relation 1396. Up to 317 conditions per place. [2023-08-26 12:28:41,932 INFO L140 encePairwiseOnDemand]: 324/337 looper letters, 54 selfloop transitions, 20 changer transitions 4/79 dead transitions. [2023-08-26 12:28:41,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 666 flow [2023-08-26 12:28:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:28:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:28:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 629 transitions. [2023-08-26 12:28:41,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31107814045499504 [2023-08-26 12:28:41,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 629 transitions. [2023-08-26 12:28:41,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 629 transitions. [2023-08-26 12:28:41,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:41,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 629 transitions. [2023-08-26 12:28:41,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,937 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,937 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 430 flow. Second operand 6 states and 629 transitions. [2023-08-26 12:28:41,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 666 flow [2023-08-26 12:28:41,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 79 transitions, 648 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-26 12:28:41,941 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 433 flow [2023-08-26 12:28:41,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=433, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2023-08-26 12:28:41,941 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2023-08-26 12:28:41,942 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 433 flow [2023-08-26 12:28:41,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:41,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:41,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:41,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 12:28:41,942 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:41,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash 704819947, now seen corresponding path program 1 times [2023-08-26 12:28:41,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:41,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908877059] [2023-08-26 12:28:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:41,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:42,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:42,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908877059] [2023-08-26 12:28:42,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908877059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:42,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:42,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:28:42,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531079557] [2023-08-26 12:28:42,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:42,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:28:42,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:28:42,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:28:42,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 337 [2023-08-26 12:28:42,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 433 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:42,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 337 [2023-08-26 12:28:42,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:42,204 INFO L124 PetriNetUnfolderBase]: 281/547 cut-off events. [2023-08-26 12:28:42,205 INFO L125 PetriNetUnfolderBase]: For 875/875 co-relation queries the response was YES. [2023-08-26 12:28:42,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 547 events. 281/547 cut-off events. For 875/875 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2226 event pairs, 53 based on Foata normal form. 18/527 useless extension candidates. Maximal degree in co-relation 1772. Up to 329 conditions per place. [2023-08-26 12:28:42,207 INFO L140 encePairwiseOnDemand]: 331/337 looper letters, 74 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-08-26 12:28:42,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 713 flow [2023-08-26 12:28:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:28:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:28:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-08-26 12:28:42,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39861523244312563 [2023-08-26 12:28:42,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-08-26 12:28:42,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-08-26 12:28:42,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:42,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-08-26 12:28:42,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,211 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 433 flow. Second operand 3 states and 403 transitions. [2023-08-26 12:28:42,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 713 flow [2023-08-26 12:28:42,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 80 transitions, 658 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-26 12:28:42,216 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 417 flow [2023-08-26 12:28:42,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=417, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2023-08-26 12:28:42,217 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-08-26 12:28:42,217 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 417 flow [2023-08-26 12:28:42,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:42,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:42,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:28:42,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:42,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash -489868023, now seen corresponding path program 2 times [2023-08-26 12:28:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:42,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433840280] [2023-08-26 12:28:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:42,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:42,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:42,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433840280] [2023-08-26 12:28:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433840280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:28:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833540769] [2023-08-26 12:28:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:42,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:28:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:28:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:28:42,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 337 [2023-08-26 12:28:42,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 417 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:42,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 337 [2023-08-26 12:28:42,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:42,397 INFO L124 PetriNetUnfolderBase]: 31/103 cut-off events. [2023-08-26 12:28:42,397 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-08-26 12:28:42,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 103 events. 31/103 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 270 event pairs, 0 based on Foata normal form. 13/112 useless extension candidates. Maximal degree in co-relation 421. Up to 63 conditions per place. [2023-08-26 12:28:42,398 INFO L140 encePairwiseOnDemand]: 333/337 looper letters, 33 selfloop transitions, 10 changer transitions 4/48 dead transitions. [2023-08-26 12:28:42,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 426 flow [2023-08-26 12:28:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:28:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:28:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-26 12:28:42,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35509396636993074 [2023-08-26 12:28:42,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-26 12:28:42,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-26 12:28:42,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:42,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-26 12:28:42,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,402 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 417 flow. Second operand 3 states and 359 transitions. [2023-08-26 12:28:42,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 426 flow [2023-08-26 12:28:42,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 408 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 12:28:42,404 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 310 flow [2023-08-26 12:28:42,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-26 12:28:42,404 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-08-26 12:28:42,404 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 310 flow [2023-08-26 12:28:42,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:42,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:42,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:42,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 12:28:42,405 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:42,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2113339134, now seen corresponding path program 1 times [2023-08-26 12:28:42,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:42,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924538821] [2023-08-26 12:28:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:42,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:42,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:42,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924538821] [2023-08-26 12:28:42,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924538821] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 12:28:42,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359715427] [2023-08-26 12:28:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:42,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:28:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:28:42,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 12:28:42,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 12:28:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:42,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-26 12:28:42,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 12:28:42,999 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-26 12:28:43,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 12:28:43,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 12:28:43,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 12:28:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:43,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 12:28:43,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359715427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:43,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 12:28:43,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-26 12:28:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013604616] [2023-08-26 12:28:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:43,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 12:28:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 12:28:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-26 12:28:43,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 337 [2023-08-26 12:28:43,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:43,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:43,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 337 [2023-08-26 12:28:43,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:43,266 INFO L124 PetriNetUnfolderBase]: 29/107 cut-off events. [2023-08-26 12:28:43,266 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2023-08-26 12:28:43,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 107 events. 29/107 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 248 event pairs, 2 based on Foata normal form. 3/102 useless extension candidates. Maximal degree in co-relation 436. Up to 64 conditions per place. [2023-08-26 12:28:43,267 INFO L140 encePairwiseOnDemand]: 328/337 looper letters, 54 selfloop transitions, 12 changer transitions 1/68 dead transitions. [2023-08-26 12:28:43,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 68 transitions, 576 flow [2023-08-26 12:28:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 12:28:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 12:28:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 805 transitions. [2023-08-26 12:28:43,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2985905044510386 [2023-08-26 12:28:43,269 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 805 transitions. [2023-08-26 12:28:43,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 805 transitions. [2023-08-26 12:28:43,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:43,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 805 transitions. [2023-08-26 12:28:43,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.625) internal successors, (805), 8 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:43,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 337.0) internal successors, (3033), 9 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:43,274 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 337.0) internal successors, (3033), 9 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:43,274 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 310 flow. Second operand 8 states and 805 transitions. [2023-08-26 12:28:43,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 68 transitions, 576 flow [2023-08-26 12:28:43,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 529 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-26 12:28:43,276 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 366 flow [2023-08-26 12:28:43,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-08-26 12:28:43,277 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 8 predicate places. [2023-08-26 12:28:43,277 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 366 flow [2023-08-26 12:28:43,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:43,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:43,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:43,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 12:28:43,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 12:28:43,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:43,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:43,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1523938654, now seen corresponding path program 1 times [2023-08-26 12:28:43,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:43,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807661093] [2023-08-26 12:28:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:43,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:43,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807661093] [2023-08-26 12:28:43,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807661093] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 12:28:43,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413876097] [2023-08-26 12:28:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:43,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:28:43,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:28:43,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 12:28:43,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 12:28:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:43,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-26 12:28:43,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 12:28:43,888 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-26 12:28:43,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 12:28:43,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 12:28:43,958 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-26 12:28:44,049 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-26 12:28:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:44,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 12:28:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413876097] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 12:28:44,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 12:28:44,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 10] total 25 [2023-08-26 12:28:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384994371] [2023-08-26 12:28:44,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 12:28:44,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 12:28:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 12:28:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-08-26 12:28:44,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 337 [2023-08-26 12:28:44,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 366 flow. Second operand has 27 states, 27 states have (on average 95.11111111111111) internal successors, (2568), 27 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:44,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:44,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 337 [2023-08-26 12:28:44,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:44,959 INFO L124 PetriNetUnfolderBase]: 59/238 cut-off events. [2023-08-26 12:28:44,959 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2023-08-26 12:28:44,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 238 events. 59/238 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 953 event pairs, 1 based on Foata normal form. 32/270 useless extension candidates. Maximal degree in co-relation 1056. Up to 109 conditions per place. [2023-08-26 12:28:44,960 INFO L140 encePairwiseOnDemand]: 323/337 looper letters, 48 selfloop transitions, 37 changer transitions 62/148 dead transitions. [2023-08-26 12:28:44,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 148 transitions, 1355 flow [2023-08-26 12:28:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 12:28:44,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 12:28:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2623 transitions. [2023-08-26 12:28:44,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28827343664138916 [2023-08-26 12:28:44,966 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2623 transitions. [2023-08-26 12:28:44,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2623 transitions. [2023-08-26 12:28:44,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:44,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2623 transitions. [2023-08-26 12:28:44,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 97.14814814814815) internal successors, (2623), 27 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:44,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 337.0) internal successors, (9436), 28 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:44,980 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 337.0) internal successors, (9436), 28 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:44,980 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 366 flow. Second operand 27 states and 2623 transitions. [2023-08-26 12:28:44,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 148 transitions, 1355 flow [2023-08-26 12:28:44,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 148 transitions, 1288 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-26 12:28:44,984 INFO L231 Difference]: Finished difference. Result has 89 places, 58 transitions, 514 flow [2023-08-26 12:28:44,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=514, PETRI_PLACES=89, PETRI_TRANSITIONS=58} [2023-08-26 12:28:44,985 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2023-08-26 12:28:44,985 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 58 transitions, 514 flow [2023-08-26 12:28:44,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 95.11111111111111) internal successors, (2568), 27 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:44,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:44,986 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:45,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 12:28:45,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 12:28:45,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-08-26 12:28:45,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:45,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1215270227, now seen corresponding path program 1 times [2023-08-26 12:28:45,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:45,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161939334] [2023-08-26 12:28:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:45,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:45,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:45,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161939334] [2023-08-26 12:28:45,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161939334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 12:28:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009128491] [2023-08-26 12:28:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:45,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:28:45,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:28:45,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 12:28:45,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 12:28:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:45,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-26 12:28:45,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 12:28:46,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 12:28:46,098 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 12:28:46,198 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 12:28:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:46,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 12:28:46,539 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-26 12:28:46,539 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2023-08-26 12:28:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:28:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009128491] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 12:28:46,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 12:28:46,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 40 [2023-08-26 12:28:46,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130379793] [2023-08-26 12:28:46,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 12:28:46,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-26 12:28:46,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-26 12:28:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1258, Unknown=0, NotChecked=0, Total=1560 [2023-08-26 12:28:46,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 337 [2023-08-26 12:28:46,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 58 transitions, 514 flow. Second operand has 40 states, 40 states have (on average 95.05) internal successors, (3802), 40 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:46,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:46,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 337 [2023-08-26 12:28:46,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:47,298 INFO L124 PetriNetUnfolderBase]: 27/216 cut-off events. [2023-08-26 12:28:47,298 INFO L125 PetriNetUnfolderBase]: For 861/861 co-relation queries the response was YES. [2023-08-26 12:28:47,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 216 events. 27/216 cut-off events. For 861/861 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 908 event pairs, 0 based on Foata normal form. 6/222 useless extension candidates. Maximal degree in co-relation 1024. Up to 69 conditions per place. [2023-08-26 12:28:47,299 INFO L140 encePairwiseOnDemand]: 325/337 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2023-08-26 12:28:47,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 1107 flow [2023-08-26 12:28:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 12:28:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 12:28:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2204 transitions. [2023-08-26 12:28:47,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2843504063991743 [2023-08-26 12:28:47,304 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2204 transitions. [2023-08-26 12:28:47,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2204 transitions. [2023-08-26 12:28:47,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:47,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2204 transitions. [2023-08-26 12:28:47,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:47,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 337.0) internal successors, (8088), 24 states have internal predecessors, (8088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:47,314 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 337.0) internal successors, (8088), 24 states have internal predecessors, (8088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:47,314 INFO L175 Difference]: Start difference. First operand has 89 places, 58 transitions, 514 flow. Second operand 23 states and 2204 transitions. [2023-08-26 12:28:47,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 1107 flow [2023-08-26 12:28:47,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 959 flow, removed 42 selfloop flow, removed 12 redundant places. [2023-08-26 12:28:47,318 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2023-08-26 12:28:47,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2023-08-26 12:28:47,319 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2023-08-26 12:28:47,319 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2023-08-26 12:28:47,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 95.05) internal successors, (3802), 40 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 39 remaining) [2023-08-26 12:28:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr7ASSERT_VIOLATIONASSERT (19 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr4ASSERT_VIOLATIONASSERT (18 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 39 remaining) [2023-08-26 12:28:47,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 39 remaining) [2023-08-26 12:28:47,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 39 remaining) [2023-08-26 12:28:47,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr7ASSERT_VIOLATIONASSERT (5 of 39 remaining) [2023-08-26 12:28:47,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr4ASSERT_VIOLATIONASSERT (4 of 39 remaining) [2023-08-26 12:28:47,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 39 remaining) [2023-08-26 12:28:47,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 39 remaining) [2023-08-26 12:28:47,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 39 remaining) [2023-08-26 12:28:47,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 39 remaining) [2023-08-26 12:28:47,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 12:28:47,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 12:28:47,529 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:47,533 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:28:47,533 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:28:47,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:28:47 BasicIcfg [2023-08-26 12:28:47,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:28:47,536 INFO L158 Benchmark]: Toolchain (without parser) took 12580.03ms. Allocated memory was 381.7MB in the beginning and 564.1MB in the end (delta: 182.5MB). Free memory was 356.6MB in the beginning and 418.8MB in the end (delta: -62.1MB). Peak memory consumption was 121.7MB. Max. memory is 16.0GB. [2023-08-26 12:28:47,536 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 381.7MB. Free memory is still 357.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:28:47,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.35ms. Allocated memory is still 381.7MB. Free memory was 356.3MB in the beginning and 336.6MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 12:28:47,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.70ms. Allocated memory is still 381.7MB. Free memory was 336.6MB in the beginning and 334.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:28:47,536 INFO L158 Benchmark]: Boogie Preprocessor took 34.70ms. Allocated memory is still 381.7MB. Free memory was 334.5MB in the beginning and 332.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:28:47,536 INFO L158 Benchmark]: RCFGBuilder took 336.57ms. Allocated memory is still 381.7MB. Free memory was 332.4MB in the beginning and 313.7MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 12:28:47,537 INFO L158 Benchmark]: TraceAbstraction took 11802.20ms. Allocated memory was 381.7MB in the beginning and 564.1MB in the end (delta: 182.5MB). Free memory was 313.0MB in the beginning and 418.8MB in the end (delta: -105.8MB). Peak memory consumption was 79.8MB. Max. memory is 16.0GB. [2023-08-26 12:28:47,538 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 381.7MB. Free memory is still 357.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 353.35ms. Allocated memory is still 381.7MB. Free memory was 356.3MB in the beginning and 336.6MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.70ms. Allocated memory is still 381.7MB. Free memory was 336.6MB in the beginning and 334.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.70ms. Allocated memory is still 381.7MB. Free memory was 334.5MB in the beginning and 332.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 336.57ms. Allocated memory is still 381.7MB. Free memory was 332.4MB in the beginning and 313.7MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 11802.20ms. Allocated memory was 381.7MB in the beginning and 564.1MB in the end (delta: 182.5MB). Free memory was 313.0MB in the beginning and 418.8MB in the end (delta: -105.8MB). Peak memory consumption was 79.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 150 PlacesBefore, 47 PlacesAfterwards, 158 TransitionsBefore, 49 TransitionsAfterwards, 6384 CoEnabledTransitionPairs, 6 FixpointIterations, 46 TrivialSequentialCompositions, 103 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 6 ChoiceCompositions, 178 TotalNumberOfCompositions, 10753 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7546, independent: 7323, independent conditional: 0, independent unconditional: 7323, dependent: 223, dependent conditional: 0, dependent unconditional: 223, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3888, independent: 3830, independent conditional: 0, independent unconditional: 3830, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7546, independent: 3493, independent conditional: 0, independent unconditional: 3493, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 3888, unknown conditional: 0, unknown unconditional: 3888] , Statistics on independence cache: Total cache size (in pairs): 202, Positive cache size: 182, Positive conditional cache size: 0, Positive unconditional cache size: 182, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 217 locations, 39 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: 11.7s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 638 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 638 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2000 IncrementalHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 9 mSDtfsCounter, 2000 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=514occurred in iteration=13, InterpolantAutomatonStates: 100, 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, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 221 ConstructedInterpolants, 10 QuantifiedInterpolants, 2857 SizeOfPredicates, 69 NumberOfNonLiveVariables, 821 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 43/62 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 - AllSpecificationsHoldResult: All specifications hold 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:28:47,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...