/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 18:28:59,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 18:28:59,360 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 18:28:59,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 18:28:59,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 18:28:59,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 18:28:59,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 18:28:59,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 18:28:59,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 18:28:59,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 18:28:59,398 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 18:28:59,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 18:28:59,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 18:28:59,399 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 18:28:59,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 18:28:59,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 18:28:59,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 18:28:59,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 18:28:59,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 18:28:59,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 18:28:59,401 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 18:28:59,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 18:28:59,402 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 18:28:59,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 18:28:59,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 18:28:59,403 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 18:28:59,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 18:28:59,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:28:59,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 18:28:59,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 18:28:59,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 18:28:59,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 18:28:59,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 18:28:59,405 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 18:28:59,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 18:28:59,405 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 18:28:59,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 18:28:59,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 18:28:59,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 18:28:59,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 18:28:59,718 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 18:28:59,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-08-26 18:29:00,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 18:29:01,270 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 18:29:01,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-08-26 18:29:01,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6521cb02a/3f79b2efff13445e9af095195b86f680/FLAGbe890e883 [2023-08-26 18:29:01,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6521cb02a/3f79b2efff13445e9af095195b86f680 [2023-08-26 18:29:01,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 18:29:01,304 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 18:29:01,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 18:29:01,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 18:29:01,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 18:29:01,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9f8caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01, skipping insertion in model container [2023-08-26 18:29:01,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,358 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 18:29:01,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:29:01,697 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 18:29:01,724 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 18:29:01,726 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 18:29:01,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:29:01,779 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 18:29:01,779 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 18:29:01,786 INFO L206 MainTranslator]: Completed translation [2023-08-26 18:29:01,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01 WrapperNode [2023-08-26 18:29:01,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 18:29:01,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 18:29:01,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 18:29:01,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 18:29:01,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,843 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2023-08-26 18:29:01,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 18:29:01,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 18:29:01,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 18:29:01,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 18:29:01,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 18:29:01,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 18:29:01,872 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 18:29:01,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 18:29:01,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (1/1) ... [2023-08-26 18:29:01,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:29:01,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 18:29:01,902 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 18:29:01,910 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 18:29:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 18:29:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 18:29:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 18:29:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 18:29:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 18:29:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 18:29:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 18:29:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 18:29:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 18:29:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 18:29:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 18:29:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 18:29:01,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 18:29:01,939 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 18:29:02,089 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 18:29:02,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 18:29:02,250 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 18:29:02,255 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 18:29:02,255 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 18:29:02,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:29:02 BoogieIcfgContainer [2023-08-26 18:29:02,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 18:29:02,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 18:29:02,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 18:29:02,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 18:29:02,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:29:01" (1/3) ... [2023-08-26 18:29:02,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fc17a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:29:02, skipping insertion in model container [2023-08-26 18:29:02,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:01" (2/3) ... [2023-08-26 18:29:02,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fc17a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:29:02, skipping insertion in model container [2023-08-26 18:29:02,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:29:02" (3/3) ... [2023-08-26 18:29:02,268 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2023-08-26 18:29:02,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 18:29:02,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 18:29:02,284 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 18:29:02,338 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 18:29:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 74 transitions, 158 flow [2023-08-26 18:29:02,398 INFO L124 PetriNetUnfolderBase]: 3/72 cut-off events. [2023-08-26 18:29:02,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:29:02,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 3/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-26 18:29:02,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 74 transitions, 158 flow [2023-08-26 18:29:02,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 126 flow [2023-08-26 18:29:02,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 18:29:02,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 60 transitions, 126 flow [2023-08-26 18:29:02,427 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 60 transitions, 126 flow [2023-08-26 18:29:02,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 60 transitions, 126 flow [2023-08-26 18:29:02,453 INFO L124 PetriNetUnfolderBase]: 1/60 cut-off events. [2023-08-26 18:29:02,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:29:02,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-08-26 18:29:02,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 612 [2023-08-26 18:29:04,332 INFO L134 LiptonReduction]: Checked pairs total: 1166 [2023-08-26 18:29:04,333 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-26 18:29:04,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 18:29:04,359 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;@512f8cf8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 18:29:04,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 18:29:04,361 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 18:29:04,361 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 18:29:04,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:29:04,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:04,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 18:29:04,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:29:04,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:04,366 INFO L85 PathProgramCache]: Analyzing trace with hash 264, now seen corresponding path program 1 times [2023-08-26 18:29:04,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:04,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756912057] [2023-08-26 18:29:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:04,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:04,465 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 18:29:04,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:04,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756912057] [2023-08-26 18:29:04,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756912057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:04,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 18:29:04,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771314029] [2023-08-26 18:29:04,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:04,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 18:29:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 18:29:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 18:29:04,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 134 [2023-08-26 18:29:04,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 40 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:04,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:04,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 134 [2023-08-26 18:29:04,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:04,553 INFO L124 PetriNetUnfolderBase]: 32/71 cut-off events. [2023-08-26 18:29:04,553 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 18:29:04,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 71 events. 32/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 212 event pairs, 32 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 139. Up to 67 conditions per place. [2023-08-26 18:29:04,556 INFO L140 encePairwiseOnDemand]: 129/134 looper letters, 10 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-08-26 18:29:04,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 50 flow [2023-08-26 18:29:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 18:29:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 18:29:04,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2023-08-26 18:29:04,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634328358208955 [2023-08-26 18:29:04,569 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 151 transitions. [2023-08-26 18:29:04,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 151 transitions. [2023-08-26 18:29:04,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:04,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 151 transitions. [2023-08-26 18:29:04,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:04,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:04,579 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:04,581 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 40 flow. Second operand 2 states and 151 transitions. [2023-08-26 18:29:04,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 50 flow [2023-08-26 18:29:04,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 18:29:04,584 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2023-08-26 18:29:04,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-26 18:29:04,589 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -5 predicate places. [2023-08-26 18:29:04,589 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2023-08-26 18:29:04,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:04,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:04,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 18:29:04,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 18:29:04,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:29:04,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash -807992710, now seen corresponding path program 1 times [2023-08-26 18:29:04,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:04,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502270787] [2023-08-26 18:29:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:04,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:04,957 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 18:29:04,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:04,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502270787] [2023-08-26 18:29:04,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502270787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:04,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 18:29:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572988303] [2023-08-26 18:29:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:04,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:29:04,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:29:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:29:04,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 134 [2023-08-26 18:29:04,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:04,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:04,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 134 [2023-08-26 18:29:04,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:05,025 INFO L124 PetriNetUnfolderBase]: 63/131 cut-off events. [2023-08-26 18:29:05,025 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:29:05,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 63/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 451 event pairs, 33 based on Foata normal form. 13/144 useless extension candidates. Maximal degree in co-relation 272. Up to 85 conditions per place. [2023-08-26 18:29:05,028 INFO L140 encePairwiseOnDemand]: 128/134 looper letters, 16 selfloop transitions, 5 changer transitions 0/21 dead transitions. [2023-08-26 18:29:05,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 21 transitions, 90 flow [2023-08-26 18:29:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:29:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:29:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-08-26 18:29:05,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5099502487562189 [2023-08-26 18:29:05,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-08-26 18:29:05,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-08-26 18:29:05,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:05,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-08-26 18:29:05,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,037 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 205 transitions. [2023-08-26 18:29:05,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 21 transitions, 90 flow [2023-08-26 18:29:05,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 21 transitions, 90 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 18:29:05,038 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 66 flow [2023-08-26 18:29:05,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-26 18:29:05,039 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2023-08-26 18:29:05,039 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 66 flow [2023-08-26 18:29:05,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:05,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:29:05,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 18:29:05,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:29:05,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash 722029031, now seen corresponding path program 1 times [2023-08-26 18:29:05,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:05,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743107362] [2023-08-26 18:29:05,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:05,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:05,126 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 18:29:05,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:05,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743107362] [2023-08-26 18:29:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743107362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:05,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:05,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 18:29:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140460958] [2023-08-26 18:29:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:05,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:29:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:29:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:29:05,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 134 [2023-08-26 18:29:05,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:05,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 134 [2023-08-26 18:29:05,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:05,181 INFO L124 PetriNetUnfolderBase]: 50/115 cut-off events. [2023-08-26 18:29:05,182 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-08-26 18:29:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 115 events. 50/115 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 383 event pairs, 14 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 329. Up to 89 conditions per place. [2023-08-26 18:29:05,184 INFO L140 encePairwiseOnDemand]: 130/134 looper letters, 16 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2023-08-26 18:29:05,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 132 flow [2023-08-26 18:29:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:29:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:29:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-08-26 18:29:05,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223880597014925 [2023-08-26 18:29:05,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-08-26 18:29:05,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-08-26 18:29:05,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:05,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-08-26 18:29:05,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,192 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 66 flow. Second operand 3 states and 210 transitions. [2023-08-26 18:29:05,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 132 flow [2023-08-26 18:29:05,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 18:29:05,195 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 82 flow [2023-08-26 18:29:05,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-26 18:29:05,196 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2023-08-26 18:29:05,196 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 82 flow [2023-08-26 18:29:05,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:05,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:29:05,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 18:29:05,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:29:05,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash 722028752, now seen corresponding path program 1 times [2023-08-26 18:29:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:05,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424446186] [2023-08-26 18:29:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:05,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:05,355 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 18:29:05,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:05,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424446186] [2023-08-26 18:29:05,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424446186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:05,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:05,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:29:05,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126677856] [2023-08-26 18:29:05,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:05,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 18:29:05,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:05,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 18:29:05,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 18:29:05,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 134 [2023-08-26 18:29:05,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:05,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 134 [2023-08-26 18:29:05,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:05,418 INFO L124 PetriNetUnfolderBase]: 57/129 cut-off events. [2023-08-26 18:29:05,418 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-26 18:29:05,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 129 events. 57/129 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 455 event pairs, 4 based on Foata normal form. 2/131 useless extension candidates. Maximal degree in co-relation 357. Up to 47 conditions per place. [2023-08-26 18:29:05,422 INFO L140 encePairwiseOnDemand]: 128/134 looper letters, 20 selfloop transitions, 10 changer transitions 0/30 dead transitions. [2023-08-26 18:29:05,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 174 flow [2023-08-26 18:29:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 18:29:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 18:29:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2023-08-26 18:29:05,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46865671641791046 [2023-08-26 18:29:05,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 314 transitions. [2023-08-26 18:29:05,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 314 transitions. [2023-08-26 18:29:05,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:05,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 314 transitions. [2023-08-26 18:29:05,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,428 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,428 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 82 flow. Second operand 5 states and 314 transitions. [2023-08-26 18:29:05,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 174 flow [2023-08-26 18:29:05,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:29:05,430 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 112 flow [2023-08-26 18:29:05,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-26 18:29:05,431 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-26 18:29:05,432 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 112 flow [2023-08-26 18:29:05,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:05,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:29:05,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 18:29:05,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:29:05,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash 907370547, now seen corresponding path program 1 times [2023-08-26 18:29:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:05,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553282874] [2023-08-26 18:29:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:05,550 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 18:29:05,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:05,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553282874] [2023-08-26 18:29:05,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553282874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:05,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:05,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 18:29:05,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867140297] [2023-08-26 18:29:05,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:05,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:29:05,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:29:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:29:05,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 134 [2023-08-26 18:29:05,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:05,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 134 [2023-08-26 18:29:05,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:05,589 INFO L124 PetriNetUnfolderBase]: 17/62 cut-off events. [2023-08-26 18:29:05,589 INFO L125 PetriNetUnfolderBase]: For 51/53 co-relation queries the response was YES. [2023-08-26 18:29:05,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 62 events. 17/62 cut-off events. For 51/53 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 4 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 194. Up to 39 conditions per place. [2023-08-26 18:29:05,589 INFO L140 encePairwiseOnDemand]: 130/134 looper letters, 15 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2023-08-26 18:29:05,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 176 flow [2023-08-26 18:29:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:29:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:29:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-08-26 18:29:05,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199004975124378 [2023-08-26 18:29:05,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-08-26 18:29:05,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-08-26 18:29:05,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:05,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-08-26 18:29:05,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,594 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 112 flow. Second operand 3 states and 209 transitions. [2023-08-26 18:29:05,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 176 flow [2023-08-26 18:29:05,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 170 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-26 18:29:05,596 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 106 flow [2023-08-26 18:29:05,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2023-08-26 18:29:05,597 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-08-26 18:29:05,597 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 106 flow [2023-08-26 18:29:05,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:29:05,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:29:05,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 18:29:05,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:29:05,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:29:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1870925362, now seen corresponding path program 1 times [2023-08-26 18:29:05,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:29:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704366731] [2023-08-26 18:29:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:29:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:29:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:29:05,678 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 18:29:05,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:29:05,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704366731] [2023-08-26 18:29:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704366731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:29:05,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:29:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:29:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079417763] [2023-08-26 18:29:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:29:05,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 18:29:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:29:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 18:29:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 18:29:05,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 134 [2023-08-26 18:29:05,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:29:05,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 134 [2023-08-26 18:29:05,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:29:05,705 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2023-08-26 18:29:05,705 INFO L125 PetriNetUnfolderBase]: For 34/39 co-relation queries the response was YES. [2023-08-26 18:29:05,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 34 events. 8/34 cut-off events. For 34/39 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 2 based on Foata normal form. 11/44 useless extension candidates. Maximal degree in co-relation 130. Up to 15 conditions per place. [2023-08-26 18:29:05,706 INFO L140 encePairwiseOnDemand]: 130/134 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-26 18:29:05,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 21 transitions, 152 flow [2023-08-26 18:29:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 18:29:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 18:29:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2023-08-26 18:29:05,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074626865671642 [2023-08-26 18:29:05,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2023-08-26 18:29:05,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2023-08-26 18:29:05,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:29:05,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2023-08-26 18:29:05,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,710 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,710 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 106 flow. Second operand 4 states and 272 transitions. [2023-08-26 18:29:05,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 21 transitions, 152 flow [2023-08-26 18:29:05,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 133 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 18:29:05,711 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-26 18:29:05,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-26 18:29:05,712 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2023-08-26 18:29:05,712 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-26 18:29:05,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:29:05,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-08-26 18:29:05,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-08-26 18:29:05,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-26 18:29:05,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-26 18:29:05,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (2 of 7 remaining) [2023-08-26 18:29:05,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-26 18:29:05,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-26 18:29:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 18:29:05,717 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 18:29:05,719 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 18:29:05,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 18:29:05,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:29:05 BasicIcfg [2023-08-26 18:29:05,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 18:29:05,723 INFO L158 Benchmark]: Toolchain (without parser) took 4419.23ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 323.1MB in the beginning and 312.6MB in the end (delta: 10.5MB). Peak memory consumption was 82.3MB. Max. memory is 16.0GB. [2023-08-26 18:29:05,723 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 348.1MB. Free memory is still 323.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:29:05,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.60ms. Allocated memory is still 348.1MB. Free memory was 322.6MB in the beginning and 302.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 18:29:05,724 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.33ms. Allocated memory is still 348.1MB. Free memory was 302.1MB in the beginning and 300.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:29:05,724 INFO L158 Benchmark]: Boogie Preprocessor took 27.06ms. Allocated memory is still 348.1MB. Free memory was 300.0MB in the beginning and 298.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:29:05,725 INFO L158 Benchmark]: RCFGBuilder took 385.83ms. Allocated memory is still 348.1MB. Free memory was 298.5MB in the beginning and 285.3MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 18:29:05,725 INFO L158 Benchmark]: TraceAbstraction took 3463.13ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 284.8MB in the beginning and 312.6MB in the end (delta: -27.8MB). Peak memory consumption was 44.5MB. Max. memory is 16.0GB. [2023-08-26 18:29:05,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 348.1MB. Free memory is still 323.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 481.60ms. Allocated memory is still 348.1MB. Free memory was 322.6MB in the beginning and 302.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.33ms. Allocated memory is still 348.1MB. Free memory was 302.1MB in the beginning and 300.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.06ms. Allocated memory is still 348.1MB. Free memory was 300.0MB in the beginning and 298.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 385.83ms. Allocated memory is still 348.1MB. Free memory was 298.5MB in the beginning and 285.3MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3463.13ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 284.8MB in the beginning and 312.6MB in the end (delta: -27.8MB). Peak memory consumption was 44.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 66 PlacesBefore, 23 PlacesAfterwards, 60 TransitionsBefore, 17 TransitionsAfterwards, 612 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 TotalNumberOfCompositions, 1166 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 614, independent: 556, independent conditional: 0, independent unconditional: 556, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 350, independent: 325, independent conditional: 0, independent unconditional: 325, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 614, independent: 231, independent conditional: 0, independent unconditional: 231, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 350, unknown conditional: 0, unknown unconditional: 350] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, 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: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 7 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: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 8 mSDtfsCounter, 114 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 18:29:05,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...