/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/10-synch_03-two_unique.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:24:46,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:24:46,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:24:46,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:24:46,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:24:46,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:24:46,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:24:46,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:24:46,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:24:46,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:24:46,538 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:24:46,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:24:46,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:24:46,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:24:46,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:24:46,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:24:46,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:24:46,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:24:46,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:24:46,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:24:46,541 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:24:46,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:24:46,541 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:24:46,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:24:46,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:24:46,542 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:24:46,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:24:46,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:24:46,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:24:46,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:24:46,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:24:46,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:24:46,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:24:46,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:24:46,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:24:46,544 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:24:46,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:24:46,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:24:46,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:24:46,801 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:24:46,809 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:24:46,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/10-synch_03-two_unique.i [2023-08-26 12:24:47,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:24:47,904 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:24:47,904 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/10-synch_03-two_unique.i [2023-08-26 12:24:47,921 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91f6a294c/9ff33a2711ac4526a7022f3327456d4b/FLAG778481773 [2023-08-26 12:24:47,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91f6a294c/9ff33a2711ac4526a7022f3327456d4b [2023-08-26 12:24:47,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:24:47,931 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:24:47,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:24:47,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:24:47,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:24:47,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:24:47" (1/1) ... [2023-08-26 12:24:47,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e625777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:47, skipping insertion in model container [2023-08-26 12:24:47,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:24:47" (1/1) ... [2023-08-26 12:24:47,975 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:24:48,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:24:48,266 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:24:48,288 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:24:48,289 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:24:48,294 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 12:24:48,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:24:48,345 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:24:48,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48 WrapperNode [2023-08-26 12:24:48,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:24:48,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:24:48,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:24:48,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:24:48,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,390 INFO L138 Inliner]: procedures = 260, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-08-26 12:24:48,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:24:48,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:24:48,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:24:48,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:24:48,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:24:48,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:24:48,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:24:48,421 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:24:48,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (1/1) ... [2023-08-26 12:24:48,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:24:48,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:24:48,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 12:24:48,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 12:24:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-08-26 12:24:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-08-26 12:24:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-08-26 12:24:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-08-26 12:24:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:24:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:24:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:24:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:24:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:24:48,466 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:24:48,551 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:24:48,553 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:24:48,638 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:24:48,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:24:48,641 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:24:48,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:24:48 BoogieIcfgContainer [2023-08-26 12:24:48,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:24:48,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:24:48,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:24:48,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:24:48,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:24:47" (1/3) ... [2023-08-26 12:24:48,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:24:48, skipping insertion in model container [2023-08-26 12:24:48,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:48" (2/3) ... [2023-08-26 12:24:48,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:24:48, skipping insertion in model container [2023-08-26 12:24:48,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:24:48" (3/3) ... [2023-08-26 12:24:48,660 INFO L112 eAbstractionObserver]: Analyzing ICFG 10-synch_03-two_unique.i [2023-08-26 12:24:48,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:24:48,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 12:24:48,673 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:24:48,698 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:24:48,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 42 transitions, 94 flow [2023-08-26 12:24:48,744 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2023-08-26 12:24:48,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:48,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:24:48,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 42 transitions, 94 flow [2023-08-26 12:24:48,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 25 transitions, 53 flow [2023-08-26 12:24:48,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:24:48,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 25 transitions, 53 flow [2023-08-26 12:24:48,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 25 transitions, 53 flow [2023-08-26 12:24:48,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 25 transitions, 53 flow [2023-08-26 12:24:48,766 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-08-26 12:24:48,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:48,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 0/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:24:48,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-08-26 12:24:49,640 INFO L134 LiptonReduction]: Checked pairs total: 34 [2023-08-26 12:24:49,640 INFO L136 LiptonReduction]: Total number of compositions: 25 [2023-08-26 12:24:49,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:24:49,661 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;@79f9c018, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:24:49,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-26 12:24:49,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:24:49,664 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 12:24:49,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:49,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:24:49,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:24:49,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-26 12:24:49,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:24:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash 147, now seen corresponding path program 1 times [2023-08-26 12:24:49,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:24:49,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215634991] [2023-08-26 12:24:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:24:49,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:24:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:24:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:24:49,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:24:49,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215634991] [2023-08-26 12:24:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215634991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:24:49,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:24:49,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:24:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4612010] [2023-08-26 12:24:49,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:24:49,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:24:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:24:49,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:24:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:24:49,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 67 [2023-08-26 12:24:49,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 7 transitions, 17 flow. Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:49,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:24:49,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 67 [2023-08-26 12:24:49,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:24:49,781 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-26 12:24:49,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:49,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 9 events. 2/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 14. Up to 10 conditions per place. [2023-08-26 12:24:49,783 INFO L140 encePairwiseOnDemand]: 65/67 looper letters, 5 selfloop transitions, 0 changer transitions 0/5 dead transitions. [2023-08-26 12:24:49,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 5 transitions, 23 flow [2023-08-26 12:24:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:24:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:24:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2023-08-26 12:24:49,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6492537313432836 [2023-08-26 12:24:49,791 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 87 transitions. [2023-08-26 12:24:49,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 87 transitions. [2023-08-26 12:24:49,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:24:49,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 87 transitions. [2023-08-26 12:24:49,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:49,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 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 12:24:49,800 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 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 12:24:49,801 INFO L175 Difference]: Start difference. First operand has 11 places, 7 transitions, 17 flow. Second operand 2 states and 87 transitions. [2023-08-26 12:24:49,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 5 transitions, 23 flow [2023-08-26 12:24:49,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 5 transitions, 22 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:24:49,804 INFO L231 Difference]: Finished difference. Result has 9 places, 5 transitions, 12 flow [2023-08-26 12:24:49,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=12, PETRI_PLACES=9, PETRI_TRANSITIONS=5} [2023-08-26 12:24:49,808 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, -2 predicate places. [2023-08-26 12:24:49,808 INFO L495 AbstractCegarLoop]: Abstraction has has 9 places, 5 transitions, 12 flow [2023-08-26 12:24:49,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:49,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:24:49,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 12:24:49,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:24:49,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-26 12:24:49,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:24:49,810 INFO L85 PathProgramCache]: Analyzing trace with hash 145223, now seen corresponding path program 1 times [2023-08-26 12:24:49,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:24:49,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239165674] [2023-08-26 12:24:49,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:24:49,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:24:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:24:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:24:49,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:24:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239165674] [2023-08-26 12:24:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239165674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:24:49,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:24:49,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:24:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255412086] [2023-08-26 12:24:49,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:24:49,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:24:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:24:49,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:24:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:24:49,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2023-08-26 12:24:49,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 12 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:49,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:24:49,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2023-08-26 12:24:49,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:24:49,961 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-26 12:24:49,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:49,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 6 events. 1/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 1 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 14. Up to 6 conditions per place. [2023-08-26 12:24:49,961 INFO L140 encePairwiseOnDemand]: 65/67 looper letters, 3 selfloop transitions, 1 changer transitions 0/4 dead transitions. [2023-08-26 12:24:49,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 4 transitions, 18 flow [2023-08-26 12:24:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:24:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:24:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2023-08-26 12:24:49,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.472636815920398 [2023-08-26 12:24:49,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2023-08-26 12:24:49,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2023-08-26 12:24:49,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:24:49,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2023-08-26 12:24:49,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:49,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:49,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:49,967 INFO L175 Difference]: Start difference. First operand has 9 places, 5 transitions, 12 flow. Second operand 3 states and 95 transitions. [2023-08-26 12:24:49,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 4 transitions, 18 flow [2023-08-26 12:24:49,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 4 transitions, 18 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:24:49,968 INFO L231 Difference]: Finished difference. Result has 10 places, 4 transitions, 12 flow [2023-08-26 12:24:49,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=12, PETRI_PLACES=10, PETRI_TRANSITIONS=4} [2023-08-26 12:24:49,969 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, -1 predicate places. [2023-08-26 12:24:49,969 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 4 transitions, 12 flow [2023-08-26 12:24:49,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:49,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:24:49,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 12:24:49,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:24:49,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-26 12:24:49,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:24:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash 145224, now seen corresponding path program 1 times [2023-08-26 12:24:49,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:24:49,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563449811] [2023-08-26 12:24:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:24:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:24:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:24:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:24:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:24:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563449811] [2023-08-26 12:24:50,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563449811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:24:50,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:24:50,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:24:50,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968692385] [2023-08-26 12:24:50,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:24:50,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:24:50,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:24:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:24:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:24:50,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2023-08-26 12:24:50,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 4 transitions, 12 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:50,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:24:50,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2023-08-26 12:24:50,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:24:50,025 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 12:24:50,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:50,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 3 events. 0/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 2/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-26 12:24:50,026 INFO L140 encePairwiseOnDemand]: 65/67 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2023-08-26 12:24:50,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 3 transitions, 16 flow [2023-08-26 12:24:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:24:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:24:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-08-26 12:24:50,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43781094527363185 [2023-08-26 12:24:50,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-08-26 12:24:50,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-08-26 12:24:50,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:24:50,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-08-26 12:24:50,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:50,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:50,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:50,028 INFO L175 Difference]: Start difference. First operand has 10 places, 4 transitions, 12 flow. Second operand 3 states and 88 transitions. [2023-08-26 12:24:50,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 3 transitions, 16 flow [2023-08-26 12:24:50,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 3 transitions, 15 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:24:50,029 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-26 12:24:50,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=9, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-08-26 12:24:50,029 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, -1 predicate places. [2023-08-26 12:24:50,030 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-26 12:24:50,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:50,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-08-26 12:24:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-26 12:24:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-26 12:24:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-26 12:24:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-26 12:24:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-26 12:24:50,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:24:50,033 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 12:24:50,034 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:24:50,035 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:24:50,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:24:50 BasicIcfg [2023-08-26 12:24:50,037 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:24:50,038 INFO L158 Benchmark]: Toolchain (without parser) took 2106.30ms. Allocated memory is still 406.8MB. Free memory was 382.3MB in the beginning and 267.5MB in the end (delta: 114.8MB). Peak memory consumption was 117.9MB. Max. memory is 16.0GB. [2023-08-26 12:24:50,038 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 406.8MB. Free memory is still 383.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:24:50,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.09ms. Allocated memory is still 406.8MB. Free memory was 381.8MB in the beginning and 355.6MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-26 12:24:50,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.13ms. Allocated memory is still 406.8MB. Free memory was 355.6MB in the beginning and 353.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:24:50,039 INFO L158 Benchmark]: Boogie Preprocessor took 28.60ms. Allocated memory is still 406.8MB. Free memory was 353.6MB in the beginning and 352.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:24:50,039 INFO L158 Benchmark]: RCFGBuilder took 222.16ms. Allocated memory is still 406.8MB. Free memory was 352.4MB in the beginning and 340.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-26 12:24:50,040 INFO L158 Benchmark]: TraceAbstraction took 1393.22ms. Allocated memory is still 406.8MB. Free memory was 340.2MB in the beginning and 267.5MB in the end (delta: 72.8MB). Peak memory consumption was 75.9MB. Max. memory is 16.0GB. [2023-08-26 12:24:50,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 406.8MB. Free memory is still 383.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 414.09ms. Allocated memory is still 406.8MB. Free memory was 381.8MB in the beginning and 355.6MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.13ms. Allocated memory is still 406.8MB. Free memory was 355.6MB in the beginning and 353.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.60ms. Allocated memory is still 406.8MB. Free memory was 353.6MB in the beginning and 352.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 222.16ms. Allocated memory is still 406.8MB. Free memory was 352.4MB in the beginning and 340.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 1393.22ms. Allocated memory is still 406.8MB. Free memory was 340.2MB in the beginning and 267.5MB in the end (delta: 72.8MB). Peak memory consumption was 75.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 29 PlacesBefore, 11 PlacesAfterwards, 25 TransitionsBefore, 7 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 25 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 22, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 34, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 22, unknown conditional: 0, unknown unconditional: 22] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 6 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: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:24:50,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...