/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:33:23,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:33:23,938 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 15:33:23,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:33:23,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:33:23,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:33:23,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:33:23,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:33:23,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:33:23,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:33:23,984 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:33:23,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:33:23,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:33:23,986 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:33:23,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:33:23,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:33:23,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:33:23,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:33:23,987 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:33:23,987 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:33:23,987 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:33:23,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:33:23,988 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:33:23,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:33:23,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:33:23,989 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:33:23,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:33:23,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:33:23,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:33:23,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:33:23,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:33:23,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:33:23,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:33:23,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:33:23,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:33:23,991 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:33:24,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:33:24,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:33:24,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:33:24,329 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:33:24,330 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:33:24,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i [2023-08-26 15:33:25,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:33:25,720 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:33:25,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i [2023-08-26 15:33:25,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48034b7d8/57c53d197bbc4345895a44d583d4bc7c/FLAG8c5ddff9a [2023-08-26 15:33:25,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48034b7d8/57c53d197bbc4345895a44d583d4bc7c [2023-08-26 15:33:25,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:33:25,755 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:33:25,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:33:25,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:33:25,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:33:25,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:33:25" (1/1) ... [2023-08-26 15:33:25,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3282cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:25, skipping insertion in model container [2023-08-26 15:33:25,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:33:25" (1/1) ... [2023-08-26 15:33:25,816 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:33:26,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:33:26,150 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:33:26,182 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 15:33:26,184 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 15:33:26,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:33:26,255 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:33:26,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26 WrapperNode [2023-08-26 15:33:26,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:33:26,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:33:26,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:33:26,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:33:26,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,315 INFO L138 Inliner]: procedures = 162, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-08-26 15:33:26,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:33:26,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:33:26,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:33:26,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:33:26,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:33:26,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:33:26,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:33:26,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:33:26,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (1/1) ... [2023-08-26 15:33:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:33:26,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:33:26,389 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 15:33:26,410 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 15:33:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:33:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:33:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:33:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:33:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:33:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:33:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:33:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:33:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:33:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:33:26,433 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 15:33:26,579 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:33:26,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:33:26,782 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:33:26,788 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:33:26,788 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 15:33:26,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:33:26 BoogieIcfgContainer [2023-08-26 15:33:26,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:33:26,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:33:26,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:33:26,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:33:26,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:33:25" (1/3) ... [2023-08-26 15:33:26,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccbb2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:33:26, skipping insertion in model container [2023-08-26 15:33:26,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:26" (2/3) ... [2023-08-26 15:33:26,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccbb2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:33:26, skipping insertion in model container [2023-08-26 15:33:26,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:33:26" (3/3) ... [2023-08-26 15:33:26,800 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_33-traces-v-matters_true.i [2023-08-26 15:33:26,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:33:26,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-26 15:33:26,817 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:33:26,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 15:33:26,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 163 flow [2023-08-26 15:33:26,930 INFO L124 PetriNetUnfolderBase]: 2/78 cut-off events. [2023-08-26 15:33:26,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:26,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-08-26 15:33:26,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 163 flow [2023-08-26 15:33:26,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 68 transitions, 139 flow [2023-08-26 15:33:26,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:33:26,953 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 68 transitions, 139 flow [2023-08-26 15:33:26,955 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 68 transitions, 139 flow [2023-08-26 15:33:26,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 68 transitions, 139 flow [2023-08-26 15:33:26,973 INFO L124 PetriNetUnfolderBase]: 0/68 cut-off events. [2023-08-26 15:33:26,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:26,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 68 events. 0/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 15:33:26,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 442 [2023-08-26 15:33:30,037 INFO L134 LiptonReduction]: Checked pairs total: 1444 [2023-08-26 15:33:30,037 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-26 15:33:30,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:33:30,054 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;@73afcbdc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:33:30,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-26 15:33:30,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:33:30,055 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:33:30,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:30,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:30,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:33:30,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 15:33:30,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:30,061 INFO L85 PathProgramCache]: Analyzing trace with hash 269, now seen corresponding path program 1 times [2023-08-26 15:33:30,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:30,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139355586] [2023-08-26 15:33:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:30,163 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 15:33:30,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139355586] [2023-08-26 15:33:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139355586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:30,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:33:30,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946834103] [2023-08-26 15:33:30,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:30,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:33:30,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:33:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:33:30,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 138 [2023-08-26 15:33:30,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 37 flow. Second operand has 2 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 15:33:30,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:30,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 138 [2023-08-26 15:33:30,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:30,244 INFO L124 PetriNetUnfolderBase]: 20/66 cut-off events. [2023-08-26 15:33:30,245 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:30,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 66 events. 20/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 187 event pairs, 20 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 113. Up to 52 conditions per place. [2023-08-26 15:33:30,246 INFO L140 encePairwiseOnDemand]: 136/138 looper letters, 11 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-26 15:33:30,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 55 flow [2023-08-26 15:33:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:33:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:33:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2023-08-26 15:33:30,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2023-08-26 15:33:30,258 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2023-08-26 15:33:30,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2023-08-26 15:33:30,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:30,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2023-08-26 15:33:30,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,267 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,268 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 37 flow. Second operand 2 states and 163 transitions. [2023-08-26 15:33:30,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 55 flow [2023-08-26 15:33:30,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:33:30,272 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 32 flow [2023-08-26 15:33:30,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-08-26 15:33:30,276 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -2 predicate places. [2023-08-26 15:33:30,276 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 32 flow [2023-08-26 15:33:30,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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 15:33:30,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:30,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:30,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:33:30,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 15:33:30,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:30,278 INFO L85 PathProgramCache]: Analyzing trace with hash -465904346, now seen corresponding path program 1 times [2023-08-26 15:33:30,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:30,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138061455] [2023-08-26 15:33:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:30,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:30,468 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 15:33:30,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:30,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138061455] [2023-08-26 15:33:30,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138061455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:30,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:30,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:33:30,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819877153] [2023-08-26 15:33:30,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:30,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:30,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:30,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:30,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:30,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 138 [2023-08-26 15:33:30,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:30,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 138 [2023-08-26 15:33:30,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:30,506 INFO L124 PetriNetUnfolderBase]: 19/71 cut-off events. [2023-08-26 15:33:30,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:30,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 71 events. 19/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 228 event pairs, 10 based on Foata normal form. 5/74 useless extension candidates. Maximal degree in co-relation 127. Up to 39 conditions per place. [2023-08-26 15:33:30,507 INFO L140 encePairwiseOnDemand]: 135/138 looper letters, 11 selfloop transitions, 2 changer transitions 3/20 dead transitions. [2023-08-26 15:33:30,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 74 flow [2023-08-26 15:33:30,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-26 15:33:30,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-26 15:33:30,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-26 15:33:30,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-26 15:33:30,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:30,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-26 15:33:30,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,521 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 32 flow. Second operand 3 states and 230 transitions. [2023-08-26 15:33:30,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 74 flow [2023-08-26 15:33:30,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 74 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:33:30,522 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 40 flow [2023-08-26 15:33:30,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-26 15:33:30,522 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-08-26 15:33:30,523 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 40 flow [2023-08-26 15:33:30,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:30,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:30,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:33:30,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 15:33:30,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -980967731, now seen corresponding path program 1 times [2023-08-26 15:33:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563477319] [2023-08-26 15:33:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:30,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:30,697 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 15:33:30,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:30,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563477319] [2023-08-26 15:33:30,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563477319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:30,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:30,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:33:30,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339739240] [2023-08-26 15:33:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:30,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:30,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:30,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:30,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:30,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 138 [2023-08-26 15:33:30,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:30,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 138 [2023-08-26 15:33:30,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:30,755 INFO L124 PetriNetUnfolderBase]: 11/39 cut-off events. [2023-08-26 15:33:30,755 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 15:33:30,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 39 events. 11/39 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 4 based on Foata normal form. 5/44 useless extension candidates. Maximal degree in co-relation 90. Up to 20 conditions per place. [2023-08-26 15:33:30,756 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 13 selfloop transitions, 4 changer transitions 0/17 dead transitions. [2023-08-26 15:33:30,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 80 flow [2023-08-26 15:33:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2023-08-26 15:33:30,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47342995169082125 [2023-08-26 15:33:30,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2023-08-26 15:33:30,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2023-08-26 15:33:30,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:30,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2023-08-26 15:33:30,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,765 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 40 flow. Second operand 3 states and 196 transitions. [2023-08-26 15:33:30,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 80 flow [2023-08-26 15:33:30,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:33:30,767 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 46 flow [2023-08-26 15:33:30,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2023-08-26 15:33:30,768 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-08-26 15:33:30,771 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 46 flow [2023-08-26 15:33:30,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:30,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:30,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:33:30,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 15:33:30,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:30,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1577383559, now seen corresponding path program 2 times [2023-08-26 15:33:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:30,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420578750] [2023-08-26 15:33:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:30,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:30,948 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 15:33:30,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:30,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420578750] [2023-08-26 15:33:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420578750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:30,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:30,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 15:33:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336847923] [2023-08-26 15:33:30,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:33:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:33:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:33:30,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 138 [2023-08-26 15:33:30,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:30,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:30,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 138 [2023-08-26 15:33:30,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:30,999 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2023-08-26 15:33:30,999 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 15:33:31,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 29 events. 4/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 72. Up to 15 conditions per place. [2023-08-26 15:33:31,000 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 13 selfloop transitions, 5 changer transitions 1/19 dead transitions. [2023-08-26 15:33:31,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 19 transitions, 96 flow [2023-08-26 15:33:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:33:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:33:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2023-08-26 15:33:31,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4221014492753623 [2023-08-26 15:33:31,002 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 233 transitions. [2023-08-26 15:33:31,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 233 transitions. [2023-08-26 15:33:31,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:31,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 233 transitions. [2023-08-26 15:33:31,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,005 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,005 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 46 flow. Second operand 4 states and 233 transitions. [2023-08-26 15:33:31,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 19 transitions, 96 flow [2023-08-26 15:33:31,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:33:31,006 INFO L231 Difference]: Finished difference. Result has 26 places, 16 transitions, 60 flow [2023-08-26 15:33:31,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2023-08-26 15:33:31,008 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-08-26 15:33:31,008 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 60 flow [2023-08-26 15:33:31,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:31,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:31,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:33:31,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 15:33:31,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash -983403339, now seen corresponding path program 1 times [2023-08-26 15:33:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:31,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250680470] [2023-08-26 15:33:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:31,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:31,198 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 15:33:31,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:31,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250680470] [2023-08-26 15:33:31,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250680470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:31,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:31,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 15:33:31,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722666286] [2023-08-26 15:33:31,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:31,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 15:33:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 15:33:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 15:33:31,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 138 [2023-08-26 15:33:31,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:31,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 138 [2023-08-26 15:33:31,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:31,237 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-26 15:33:31,237 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 15:33:31,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 14 events. 1/14 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 38. Up to 9 conditions per place. [2023-08-26 15:33:31,238 INFO L140 encePairwiseOnDemand]: 135/138 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-26 15:33:31,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 12 transitions, 69 flow [2023-08-26 15:33:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:33:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:33:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2023-08-26 15:33:31,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641304347826087 [2023-08-26 15:33:31,241 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 201 transitions. [2023-08-26 15:33:31,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 201 transitions. [2023-08-26 15:33:31,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:31,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 201 transitions. [2023-08-26 15:33:31,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,243 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,243 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 60 flow. Second operand 4 states and 201 transitions. [2023-08-26 15:33:31,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 12 transitions, 69 flow [2023-08-26 15:33:31,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 63 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 15:33:31,244 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-26 15:33:31,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-26 15:33:31,245 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2023-08-26 15:33:31,245 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-26 15:33:31,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:33:31,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 4 remaining) [2023-08-26 15:33:31,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 4 remaining) [2023-08-26 15:33:31,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2023-08-26 15:33:31,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-26 15:33:31,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:33:31,249 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-26 15:33:31,251 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:33:31,251 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:33:31,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:33:31 BasicIcfg [2023-08-26 15:33:31,254 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:33:31,254 INFO L158 Benchmark]: Toolchain (without parser) took 5499.68ms. Allocated memory is still 400.6MB. Free memory was 355.8MB in the beginning and 168.9MB in the end (delta: 186.9MB). Peak memory consumption was 189.8MB. Max. memory is 16.0GB. [2023-08-26 15:33:31,255 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 400.6MB. Free memory was 378.0MB in the beginning and 377.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:33:31,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.80ms. Allocated memory is still 400.6MB. Free memory was 355.8MB in the beginning and 336.7MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 15:33:31,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.32ms. Allocated memory is still 400.6MB. Free memory was 336.7MB in the beginning and 334.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:33:31,256 INFO L158 Benchmark]: Boogie Preprocessor took 32.55ms. Allocated memory is still 400.6MB. Free memory was 334.6MB in the beginning and 332.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:33:31,256 INFO L158 Benchmark]: RCFGBuilder took 440.77ms. Allocated memory is still 400.6MB. Free memory was 332.5MB in the beginning and 317.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 15:33:31,256 INFO L158 Benchmark]: TraceAbstraction took 4461.91ms. Allocated memory is still 400.6MB. Free memory was 317.8MB in the beginning and 168.9MB in the end (delta: 148.9MB). Peak memory consumption was 152.1MB. Max. memory is 16.0GB. [2023-08-26 15:33:31,258 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 400.6MB. Free memory was 378.0MB in the beginning and 377.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 498.80ms. Allocated memory is still 400.6MB. Free memory was 355.8MB in the beginning and 336.7MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.32ms. Allocated memory is still 400.6MB. Free memory was 336.7MB in the beginning and 334.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.55ms. Allocated memory is still 400.6MB. Free memory was 334.6MB in the beginning and 332.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 440.77ms. Allocated memory is still 400.6MB. Free memory was 332.5MB in the beginning and 317.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4461.91ms. Allocated memory is still 400.6MB. Free memory was 317.8MB in the beginning and 168.9MB in the end (delta: 148.9MB). Peak memory consumption was 152.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 72 PlacesBefore, 21 PlacesAfterwards, 68 TransitionsBefore, 17 TransitionsAfterwards, 442 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 1444 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 520, independent: 358, independent conditional: 0, independent unconditional: 358, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 222, independent: 200, independent conditional: 0, independent unconditional: 200, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 520, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 222, unknown conditional: 0, unknown unconditional: 222] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, 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: 18]: 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 3 procedures, 93 locations, 4 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: 4.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 129 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 1 mSDtfsCounter, 129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, InterpolantAutomatonStates: 16, 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, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 15:33:31,276 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...