/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/04-mutex_51-mutex_ptr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:23:06,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:23:06,298 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 12:23:06,301 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:23:06,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:23:06,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:23:06,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:23:06,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:23:06,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:23:06,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:23:06,331 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:23:06,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:23:06,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:23:06,332 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:23:06,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:23:06,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:23:06,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:23:06,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:23:06,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:23:06,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:23:06,333 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:23:06,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:23:06,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:23:06,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:23:06,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:23:06,335 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:23:06,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:23:06,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:23:06,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:23:06,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:23:06,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:23:06,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:23:06,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:23:06,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:23:06,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:23:06,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:23:06,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:23:06,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:23:06,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:23:06,592 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:23:06,592 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:23:06,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_51-mutex_ptr.i [2023-08-26 12:23:07,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:23:07,746 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:23:07,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_51-mutex_ptr.i [2023-08-26 12:23:07,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8bd743c6/3ffe8e23494f4d828104e996432993ca/FLAGc485d892e [2023-08-26 12:23:07,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8bd743c6/3ffe8e23494f4d828104e996432993ca [2023-08-26 12:23:07,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:23:07,768 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:23:07,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:23:07,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:23:07,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:23:07,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:23:07" (1/1) ... [2023-08-26 12:23:07,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75bd2964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:07, skipping insertion in model container [2023-08-26 12:23:07,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:23:07" (1/1) ... [2023-08-26 12:23:07,813 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:23:08,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:23:08,100 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:23:08,120 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:23:08,122 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:23:08,129 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 12:23:08,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:23:08,190 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:23:08,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08 WrapperNode [2023-08-26 12:23:08,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:23:08,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:23:08,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:23:08,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:23:08,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,236 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-08-26 12:23:08,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:23:08,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:23:08,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:23:08,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:23:08,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:23:08,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:23:08,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:23:08,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:23:08,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (1/1) ... [2023-08-26 12:23:08,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:23:08,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:23:08,290 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 12:23:08,296 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 12:23:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:23:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:23:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:23:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:23:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:23:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:23:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:23:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:23:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:23:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:23:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:23:08,317 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 12:23:08,423 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:23:08,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:23:08,600 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:23:08,605 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:23:08,605 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:23:08,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:23:08 BoogieIcfgContainer [2023-08-26 12:23:08,606 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:23:08,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:23:08,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:23:08,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:23:08,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:23:07" (1/3) ... [2023-08-26 12:23:08,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402a7f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:23:08, skipping insertion in model container [2023-08-26 12:23:08,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:08" (2/3) ... [2023-08-26 12:23:08,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402a7f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:23:08, skipping insertion in model container [2023-08-26 12:23:08,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:23:08" (3/3) ... [2023-08-26 12:23:08,611 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_51-mutex_ptr.i [2023-08-26 12:23:08,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:23:08,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-26 12:23:08,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:23:08,678 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 12:23:08,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 74 transitions, 156 flow [2023-08-26 12:23:08,757 INFO L124 PetriNetUnfolderBase]: 0/73 cut-off events. [2023-08-26 12:23:08,758 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:23:08,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 0/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-26 12:23:08,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 74 transitions, 156 flow [2023-08-26 12:23:08,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 66 transitions, 135 flow [2023-08-26 12:23:08,768 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:23:08,784 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 66 transitions, 135 flow [2023-08-26 12:23:08,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 66 transitions, 135 flow [2023-08-26 12:23:08,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 66 transitions, 135 flow [2023-08-26 12:23:08,801 INFO L124 PetriNetUnfolderBase]: 0/66 cut-off events. [2023-08-26 12:23:08,801 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:08,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 66 events. 0/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:23:08,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 512 [2023-08-26 12:23:10,970 INFO L134 LiptonReduction]: Checked pairs total: 1756 [2023-08-26 12:23:10,970 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-26 12:23:10,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:23:10,982 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;@4e3a30a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:23:10,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-26 12:23:10,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:23:10,984 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 12:23:10,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:10,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:23:10,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:23:10,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-26 12:23:10,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:23:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash 274, now seen corresponding path program 1 times [2023-08-26 12:23:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:23:10,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974598020] [2023-08-26 12:23:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:23:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:23:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:23:11,068 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 12:23:11,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:23:11,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974598020] [2023-08-26 12:23:11,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974598020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:23:11,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:23:11,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:23:11,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126224542] [2023-08-26 12:23:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:23:11,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:23:11,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:23:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:23:11,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:23:11,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 151 [2023-08-26 12:23:11,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 49 flow. Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:23:11,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 151 [2023-08-26 12:23:11,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:23:11,122 INFO L124 PetriNetUnfolderBase]: 35/98 cut-off events. [2023-08-26 12:23:11,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:11,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 98 events. 35/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 364 event pairs, 35 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 178. Up to 85 conditions per place. [2023-08-26 12:23:11,124 INFO L140 encePairwiseOnDemand]: 145/151 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-26 12:23:11,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 65 flow [2023-08-26 12:23:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:23:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:23:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 164 transitions. [2023-08-26 12:23:11,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543046357615894 [2023-08-26 12:23:11,132 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 164 transitions. [2023-08-26 12:23:11,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 164 transitions. [2023-08-26 12:23:11,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:23:11,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 164 transitions. [2023-08-26 12:23:11,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,138 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,139 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 49 flow. Second operand 2 states and 164 transitions. [2023-08-26 12:23:11,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 65 flow [2023-08-26 12:23:11,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:23:11,142 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 36 flow [2023-08-26 12:23:11,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-26 12:23:11,145 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-26 12:23:11,145 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 36 flow [2023-08-26 12:23:11,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:23:11,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 12:23:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:23:11,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-26 12:23:11,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:23:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash 267688, now seen corresponding path program 1 times [2023-08-26 12:23:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:23:11,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395181934] [2023-08-26 12:23:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:23:11,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:23:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:23:11,276 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 12:23:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:23:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395181934] [2023-08-26 12:23:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395181934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:23:11,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:23:11,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:23:11,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234667347] [2023-08-26 12:23:11,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:23:11,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:23:11,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:23:11,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:23:11,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:23:11,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 151 [2023-08-26 12:23:11,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:23:11,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 151 [2023-08-26 12:23:11,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:23:11,301 INFO L124 PetriNetUnfolderBase]: 35/88 cut-off events. [2023-08-26 12:23:11,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:11,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 88 events. 35/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 289 event pairs, 35 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 174. Up to 84 conditions per place. [2023-08-26 12:23:11,302 INFO L140 encePairwiseOnDemand]: 148/151 looper letters, 13 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-26 12:23:11,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 60 flow [2023-08-26 12:23:11,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:23:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:23:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2023-08-26 12:23:11,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37969094922737306 [2023-08-26 12:23:11,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2023-08-26 12:23:11,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2023-08-26 12:23:11,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:23:11,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2023-08-26 12:23:11,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,306 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 36 flow. Second operand 3 states and 172 transitions. [2023-08-26 12:23:11,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 60 flow [2023-08-26 12:23:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:23:11,307 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 34 flow [2023-08-26 12:23:11,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-26 12:23:11,307 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-26 12:23:11,308 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 34 flow [2023-08-26 12:23:11,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:23:11,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 12:23:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:23:11,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-26 12:23:11,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:23:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash 267687, now seen corresponding path program 1 times [2023-08-26 12:23:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:23:11,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029021093] [2023-08-26 12:23:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:23:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:23:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:23:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:23:11,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:23:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029021093] [2023-08-26 12:23:11,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029021093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:23:11,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:23:11,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:23:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925003047] [2023-08-26 12:23:11,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:23:11,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:23:11,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:23:11,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:23:11,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:23:11,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 151 [2023-08-26 12:23:11,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:23:11,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 151 [2023-08-26 12:23:11,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:23:11,369 INFO L124 PetriNetUnfolderBase]: 24/63 cut-off events. [2023-08-26 12:23:11,370 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:11,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 63 events. 24/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 177 event pairs, 24 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 126. Up to 60 conditions per place. [2023-08-26 12:23:11,370 INFO L140 encePairwiseOnDemand]: 148/151 looper letters, 10 selfloop transitions, 1 changer transitions 1/13 dead transitions. [2023-08-26 12:23:11,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 54 flow [2023-08-26 12:23:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:23:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:23:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2023-08-26 12:23:11,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620309050772627 [2023-08-26 12:23:11,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2023-08-26 12:23:11,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2023-08-26 12:23:11,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:23:11,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2023-08-26 12:23:11,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,374 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 34 flow. Second operand 3 states and 164 transitions. [2023-08-26 12:23:11,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 54 flow [2023-08-26 12:23:11,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:23:11,374 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 29 flow [2023-08-26 12:23:11,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-08-26 12:23:11,375 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-26 12:23:11,375 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 29 flow [2023-08-26 12:23:11,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:23:11,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:23:11,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:23:11,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-26 12:23:11,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:23:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash -614677241, now seen corresponding path program 1 times [2023-08-26 12:23:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:23:11,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179114344] [2023-08-26 12:23:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:23:11,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:23:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:23:11,405 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 12:23:11,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:23:11,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179114344] [2023-08-26 12:23:11,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179114344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:23:11,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:23:11,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:23:11,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461458401] [2023-08-26 12:23:11,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:23:11,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:23:11,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:23:11,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:23:11,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:23:11,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 151 [2023-08-26 12:23:11,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 29 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:23:11,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 151 [2023-08-26 12:23:11,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:23:11,421 INFO L124 PetriNetUnfolderBase]: 16/45 cut-off events. [2023-08-26 12:23:11,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:11,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 45 events. 16/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 103 event pairs, 16 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 91. Up to 42 conditions per place. [2023-08-26 12:23:11,422 INFO L140 encePairwiseOnDemand]: 149/151 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-08-26 12:23:11,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 11 transitions, 47 flow [2023-08-26 12:23:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:23:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:23:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2023-08-26 12:23:11,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620309050772627 [2023-08-26 12:23:11,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2023-08-26 12:23:11,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2023-08-26 12:23:11,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:23:11,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2023-08-26 12:23:11,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,425 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 29 flow. Second operand 3 states and 164 transitions. [2023-08-26 12:23:11,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 11 transitions, 47 flow [2023-08-26 12:23:11,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:23:11,426 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 28 flow [2023-08-26 12:23:11,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2023-08-26 12:23:11,426 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -8 predicate places. [2023-08-26 12:23:11,426 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 28 flow [2023-08-26 12:23:11,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:23:11,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:23:11,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:23:11,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-26 12:23:11,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:23:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash -614677240, now seen corresponding path program 1 times [2023-08-26 12:23:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:23:11,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417918968] [2023-08-26 12:23:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:23:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:23:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:23:11,471 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 12:23:11,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:23:11,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417918968] [2023-08-26 12:23:11,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417918968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:23:11,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:23:11,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:23:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120220286] [2023-08-26 12:23:11,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:23:11,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:23:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:23:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:23:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:23:11,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 151 [2023-08-26 12:23:11,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:23:11,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 151 [2023-08-26 12:23:11,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:23:11,485 INFO L124 PetriNetUnfolderBase]: 12/36 cut-off events. [2023-08-26 12:23:11,485 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:11,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 36 events. 12/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 12 based on Foata normal form. 5/41 useless extension candidates. Maximal degree in co-relation 74. Up to 33 conditions per place. [2023-08-26 12:23:11,485 INFO L140 encePairwiseOnDemand]: 149/151 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-26 12:23:11,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 44 flow [2023-08-26 12:23:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:23:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:23:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2023-08-26 12:23:11,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36644591611479027 [2023-08-26 12:23:11,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 166 transitions. [2023-08-26 12:23:11,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 166 transitions. [2023-08-26 12:23:11,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:23:11,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 166 transitions. [2023-08-26 12:23:11,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,488 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 28 flow. Second operand 3 states and 166 transitions. [2023-08-26 12:23:11,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 44 flow [2023-08-26 12:23:11,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 43 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:23:11,488 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-26 12:23:11,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=17, 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=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-26 12:23:11,489 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -8 predicate places. [2023-08-26 12:23:11,489 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-26 12:23:11,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:11,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-26 12:23:11,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-26 12:23:11,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-26 12:23:11,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-26 12:23:11,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-26 12:23:11,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-26 12:23:11,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-26 12:23:11,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-26 12:23:11,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-08-26 12:23:11,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-26 12:23:11,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-26 12:23:11,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-26 12:23:11,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2023-08-26 12:23:11,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2023-08-26 12:23:11,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2023-08-26 12:23:11,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2023-08-26 12:23:11,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 17 remaining) [2023-08-26 12:23:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:23:11,493 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 12:23:11,496 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:23:11,497 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:23:11,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:23:11 BasicIcfg [2023-08-26 12:23:11,499 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:23:11,499 INFO L158 Benchmark]: Toolchain (without parser) took 3731.05ms. Allocated memory was 358.6MB in the beginning and 476.1MB in the end (delta: 117.4MB). Free memory was 332.7MB in the beginning and 356.0MB in the end (delta: -23.3MB). Peak memory consumption was 95.4MB. Max. memory is 16.0GB. [2023-08-26 12:23:11,499 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory was 335.2MB in the beginning and 335.1MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:23:11,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.39ms. Allocated memory is still 358.6MB. Free memory was 332.4MB in the beginning and 305.3MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 12:23:11,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.94ms. Allocated memory is still 358.6MB. Free memory was 305.3MB in the beginning and 303.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:23:11,500 INFO L158 Benchmark]: Boogie Preprocessor took 29.53ms. Allocated memory is still 358.6MB. Free memory was 303.0MB in the beginning and 301.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:23:11,500 INFO L158 Benchmark]: RCFGBuilder took 338.84ms. Allocated memory is still 358.6MB. Free memory was 301.8MB in the beginning and 286.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 12:23:11,501 INFO L158 Benchmark]: TraceAbstraction took 2891.01ms. Allocated memory was 358.6MB in the beginning and 476.1MB in the end (delta: 117.4MB). Free memory was 286.4MB in the beginning and 356.0MB in the end (delta: -69.6MB). Peak memory consumption was 49.3MB. Max. memory is 16.0GB. [2023-08-26 12:23:11,502 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory was 335.2MB in the beginning and 335.1MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 422.39ms. Allocated memory is still 358.6MB. Free memory was 332.4MB in the beginning and 305.3MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.94ms. Allocated memory is still 358.6MB. Free memory was 305.3MB in the beginning and 303.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.53ms. Allocated memory is still 358.6MB. Free memory was 303.0MB in the beginning and 301.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 338.84ms. Allocated memory is still 358.6MB. Free memory was 301.8MB in the beginning and 286.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2891.01ms. Allocated memory was 358.6MB in the beginning and 476.1MB in the end (delta: 117.4MB). Free memory was 286.4MB in the beginning and 356.0MB in the end (delta: -69.6MB). Peak memory consumption was 49.3MB. 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: 2.2s, 70 PlacesBefore, 27 PlacesAfterwards, 66 TransitionsBefore, 23 TransitionsAfterwards, 512 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 77 TotalNumberOfCompositions, 1756 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 931, independent: 805, independent conditional: 0, independent unconditional: 805, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 352, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 931, independent: 476, independent conditional: 0, independent unconditional: 476, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 352, unknown conditional: 0, unknown unconditional: 352] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 93 locations, 17 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: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 59 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:23:11,517 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...