/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_01-thread_unique.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:24:41,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:24:41,123 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 12:24:41,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:24:41,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:24:41,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:24:41,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:24:41,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:24:41,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:24:41,161 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:24:41,161 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:24:41,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:24:41,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:24:41,162 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:24:41,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:24:41,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:24:41,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:24:41,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:24:41,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:24:41,163 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:24:41,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:24:41,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:24:41,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:24:41,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:24:41,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:24:41,165 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:24:41,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:24:41,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:24:41,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:24:41,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:24:41,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:24:41,166 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:24:41,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:24:41,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:24:41,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:24:41,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:24:41,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:24:41,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:24:41,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:24:41,398 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:24:41,398 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:24:41,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/10-synch_01-thread_unique.i [2023-08-26 12:24:42,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:24:42,533 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:24:42,533 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/10-synch_01-thread_unique.i [2023-08-26 12:24:42,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2426d94b/6415c85d5cfe4fafbc652d6dbac1e459/FLAG645c25b4f [2023-08-26 12:24:42,563 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2426d94b/6415c85d5cfe4fafbc652d6dbac1e459 [2023-08-26 12:24:42,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:24:42,567 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:24:42,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:24:42,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:24:42,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:24:42,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:42,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466f8a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42, skipping insertion in model container [2023-08-26 12:24:42,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:42,607 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:24:42,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:24:42,903 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:24:42,915 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:24:42,916 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:24:42,923 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 12:24:42,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:24:42,971 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:24:42,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42 WrapperNode [2023-08-26 12:24:42,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:24:42,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:24:42,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:24:42,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:24:42,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:42,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:42,997 INFO L138 Inliner]: procedures = 259, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-08-26 12:24:42,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:24:42,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:24:42,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:24:42,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:24:43,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:24:43,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:24:43,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:24:43,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:24:43,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (1/1) ... [2023-08-26 12:24:43,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:24:43,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:24:43,045 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 12:24:43,054 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 12:24:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:24:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:24:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:24:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:24:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:24:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:24:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:24:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:24:43,073 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 12:24:43,204 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:24:43,206 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:24:43,311 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:24:43,315 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:24:43,315 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:24:43,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:24:43 BoogieIcfgContainer [2023-08-26 12:24:43,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:24:43,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:24:43,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:24:43,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:24:43,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:24:42" (1/3) ... [2023-08-26 12:24:43,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6cb091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:24:43, skipping insertion in model container [2023-08-26 12:24:43,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:24:42" (2/3) ... [2023-08-26 12:24:43,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6cb091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:24:43, skipping insertion in model container [2023-08-26 12:24:43,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:24:43" (3/3) ... [2023-08-26 12:24:43,324 INFO L112 eAbstractionObserver]: Analyzing ICFG 10-synch_01-thread_unique.i [2023-08-26 12:24:43,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:24:43,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 12:24:43,335 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:24:43,381 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 12:24:43,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 30 transitions, 68 flow [2023-08-26 12:24:43,435 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-26 12:24:43,435 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:24:43,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 29 events. 0/29 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-26 12:24:43,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 30 transitions, 68 flow [2023-08-26 12:24:43,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 21 transitions, 45 flow [2023-08-26 12:24:43,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:24:43,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 21 transitions, 45 flow [2023-08-26 12:24:43,456 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 21 transitions, 45 flow [2023-08-26 12:24:43,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 45 flow [2023-08-26 12:24:43,474 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-26 12:24:43,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:43,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 0/21 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. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:24:43,475 INFO L119 LiptonReduction]: Number of co-enabled transitions 32 [2023-08-26 12:24:44,124 INFO L134 LiptonReduction]: Checked pairs total: 23 [2023-08-26 12:24:44,124 INFO L136 LiptonReduction]: Total number of compositions: 20 [2023-08-26 12:24:44,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:24:44,136 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;@674358a6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:24:44,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-26 12:24:44,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:24:44,137 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:24:44,137 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:44,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:24:44,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:24:44,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-08-26 12:24:44,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:24:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash 116, now seen corresponding path program 1 times [2023-08-26 12:24:44,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:24:44,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039297776] [2023-08-26 12:24:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:24:44,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:24:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:24:44,208 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 12:24:44,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:24:44,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039297776] [2023-08-26 12:24:44,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039297776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:24:44,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:24:44,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:24:44,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960614820] [2023-08-26 12:24:44,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:24:44,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:24:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:24:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:24:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:24:44,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 50 [2023-08-26 12:24:44,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 7 transitions, 17 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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 12:24:44,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:24:44,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 50 [2023-08-26 12:24:44,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:24:44,240 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-26 12:24:44,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:44,241 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 12:24:44,242 INFO L140 encePairwiseOnDemand]: 48/50 looper letters, 5 selfloop transitions, 0 changer transitions 0/5 dead transitions. [2023-08-26 12:24:44,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 5 transitions, 23 flow [2023-08-26 12:24:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:24:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:24:44,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2023-08-26 12:24:44,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63 [2023-08-26 12:24:44,249 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 63 transitions. [2023-08-26 12:24:44,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 63 transitions. [2023-08-26 12:24:44,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:24:44,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 63 transitions. [2023-08-26 12:24:44,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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 12:24:44,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 12:24:44,254 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 12:24:44,255 INFO L175 Difference]: Start difference. First operand has 11 places, 7 transitions, 17 flow. Second operand 2 states and 63 transitions. [2023-08-26 12:24:44,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 5 transitions, 23 flow [2023-08-26 12:24:44,256 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 12:24:44,257 INFO L231 Difference]: Finished difference. Result has 9 places, 5 transitions, 12 flow [2023-08-26 12:24:44,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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 12:24:44,260 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, -2 predicate places. [2023-08-26 12:24:44,260 INFO L495 AbstractCegarLoop]: Abstraction has has 9 places, 5 transitions, 12 flow [2023-08-26 12:24:44,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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 12:24:44,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:24:44,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 12:24:44,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:24:44,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-08-26 12:24:44,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:24:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash 114529, now seen corresponding path program 1 times [2023-08-26 12:24:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:24:44,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22397517] [2023-08-26 12:24:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:24:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:24:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:24:44,393 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 12:24:44,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:24:44,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22397517] [2023-08-26 12:24:44,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22397517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:24:44,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:24:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:24:44,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125066207] [2023-08-26 12:24:44,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:24:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:24:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:24:44,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:24:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:24:44,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2023-08-26 12:24:44,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 12 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 12:24:44,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:24:44,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2023-08-26 12:24:44,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:24:44,405 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-26 12:24:44,405 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:44,406 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 12:24:44,406 INFO L140 encePairwiseOnDemand]: 48/50 looper letters, 3 selfloop transitions, 1 changer transitions 0/4 dead transitions. [2023-08-26 12:24:44,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 4 transitions, 18 flow [2023-08-26 12:24:44,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:24:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:24:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2023-08-26 12:24:44,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2023-08-26 12:24:44,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2023-08-26 12:24:44,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2023-08-26 12:24:44,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:24:44,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2023-08-26 12:24:44,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 12:24:44,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:44,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:44,411 INFO L175 Difference]: Start difference. First operand has 9 places, 5 transitions, 12 flow. Second operand 3 states and 56 transitions. [2023-08-26 12:24:44,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 4 transitions, 18 flow [2023-08-26 12:24:44,411 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 12:24:44,411 INFO L231 Difference]: Finished difference. Result has 10 places, 4 transitions, 12 flow [2023-08-26 12:24:44,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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 12:24:44,412 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, -1 predicate places. [2023-08-26 12:24:44,412 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 4 transitions, 12 flow [2023-08-26 12:24:44,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 12:24:44,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:24:44,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 12:24:44,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:24:44,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-08-26 12:24:44,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:24:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash 114530, now seen corresponding path program 1 times [2023-08-26 12:24:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:24:44,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317968124] [2023-08-26 12:24:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:24:44,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:24:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:24:44,502 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 12:24:44,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:24:44,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317968124] [2023-08-26 12:24:44,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317968124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:24:44,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:24:44,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:24:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743097343] [2023-08-26 12:24:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:24:44,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:24:44,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:24:44,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:24:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:24:44,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2023-08-26 12:24:44,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 4 transitions, 12 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 12:24:44,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:24:44,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2023-08-26 12:24:44,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:24:44,510 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 12:24:44,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:24:44,510 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 12:24:44,510 INFO L140 encePairwiseOnDemand]: 48/50 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2023-08-26 12:24:44,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 3 transitions, 16 flow [2023-08-26 12:24:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:24:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:24:44,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-08-26 12:24:44,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2023-08-26 12:24:44,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-08-26 12:24:44,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-08-26 12:24:44,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:24:44,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-08-26 12:24:44,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 12:24:44,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:44,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:24:44,515 INFO L175 Difference]: Start difference. First operand has 10 places, 4 transitions, 12 flow. Second operand 3 states and 58 transitions. [2023-08-26 12:24:44,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 3 transitions, 16 flow [2023-08-26 12:24:44,516 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 12:24:44,516 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-26 12:24:44,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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 12:24:44,517 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, -1 predicate places. [2023-08-26 12:24:44,517 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-26 12:24:44,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 12:24:44,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2023-08-26 12:24:44,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-26 12:24:44,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-08-26 12:24:44,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining) [2023-08-26 12:24:44,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-26 12:24:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:24:44,525 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 12:24:44,528 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:24:44,528 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:24:44,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:24:44 BasicIcfg [2023-08-26 12:24:44,531 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:24:44,531 INFO L158 Benchmark]: Toolchain (without parser) took 1964.06ms. Allocated memory is still 371.2MB. Free memory was 346.2MB in the beginning and 271.1MB in the end (delta: 75.0MB). Peak memory consumption was 74.5MB. Max. memory is 16.0GB. [2023-08-26 12:24:44,533 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 371.2MB. Free memory was 348.6MB in the beginning and 348.5MB in the end (delta: 86.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:24:44,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.56ms. Allocated memory is still 371.2MB. Free memory was 345.8MB in the beginning and 318.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 12:24:44,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.39ms. Allocated memory is still 371.2MB. Free memory was 318.5MB in the beginning and 316.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:24:44,535 INFO L158 Benchmark]: Boogie Preprocessor took 14.41ms. Allocated memory is still 371.2MB. Free memory was 316.8MB in the beginning and 315.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:24:44,535 INFO L158 Benchmark]: RCFGBuilder took 303.87ms. Allocated memory is still 371.2MB. Free memory was 315.2MB in the beginning and 304.2MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 12:24:44,536 INFO L158 Benchmark]: TraceAbstraction took 1212.28ms. Allocated memory is still 371.2MB. Free memory was 303.5MB in the beginning and 271.1MB in the end (delta: 32.3MB). Peak memory consumption was 32.6MB. Max. memory is 16.0GB. [2023-08-26 12:24:44,540 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 371.2MB. Free memory was 348.6MB in the beginning and 348.5MB in the end (delta: 86.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 403.56ms. Allocated memory is still 371.2MB. Free memory was 345.8MB in the beginning and 318.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.39ms. Allocated memory is still 371.2MB. Free memory was 318.5MB in the beginning and 316.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.41ms. Allocated memory is still 371.2MB. Free memory was 316.8MB in the beginning and 315.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 303.87ms. Allocated memory is still 371.2MB. Free memory was 315.2MB in the beginning and 304.2MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1212.28ms. Allocated memory is still 371.2MB. Free memory was 303.5MB in the beginning and 271.1MB in the end (delta: 32.3MB). Peak memory consumption was 32.6MB. 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: 0.7s, 25 PlacesBefore, 11 PlacesAfterwards, 21 TransitionsBefore, 7 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 20 TotalNumberOfCompositions, 23 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, independent: 23, independent conditional: 0, independent unconditional: 23, 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: 14, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , 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 3 procedures, 37 locations, 5 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, 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, 0.2s 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 12:24:44,559 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...