/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 -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:52:46,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:52:46,357 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 [2023-08-23 23:52:46,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:52:46,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:52:46,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:52:46,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:52:46,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:52:46,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:52:46,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:52:46,377 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:52:46,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:52:46,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:52:46,377 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:52:46,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:52:46,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:52:46,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:52:46,378 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:52:46,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:52:46,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:52:46,379 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:52:46,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:52:46,380 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:52:46,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:52:46,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:52:46,381 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:52:46,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:52:46,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:52:46,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:52:46,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:52:46,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:52:46,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:52:46,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:52:46,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:52:46,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:52:46,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:52:46,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:52:46,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:52:46,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:52:46,603 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:52:46,604 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:52:46,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2023-08-23 23:52:47,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:52:47,847 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:52:47,848 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2023-08-23 23:52:47,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f925aba/7c805839dd704c03978db6f47713feb8/FLAGf5791255d [2023-08-23 23:52:47,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f925aba/7c805839dd704c03978db6f47713feb8 [2023-08-23 23:52:47,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:52:47,878 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:52:47,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:52:47,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:52:47,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:52:47,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:52:47" (1/1) ... [2023-08-23 23:52:47,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797966d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:47, skipping insertion in model container [2023-08-23 23:52:47,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:52:47" (1/1) ... [2023-08-23 23:52:47,908 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:52:48,029 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i[1094,1107] [2023-08-23 23:52:48,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:52:48,104 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:52:48,111 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i[1094,1107] [2023-08-23 23:52:48,117 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-23 23:52:48,118 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-23 23:52:48,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:52:48,153 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:52:48,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48 WrapperNode [2023-08-23 23:52:48,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:52:48,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:52:48,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:52:48,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:52:48,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,180 INFO L138 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-08-23 23:52:48,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:52:48,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:52:48,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:52:48,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:52:48,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:52:48,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:52:48,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:52:48,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:52:48,196 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (1/1) ... [2023-08-23 23:52:48,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:52:48,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:52:48,240 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) [2023-08-23 23:52:48,245 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 [2023-08-23 23:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-23 23:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-23 23:52:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-23 23:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:52:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:52:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:52:48,282 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:52:48,388 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:52:48,389 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:52:48,507 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:52:48,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:52:48,518 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:52:48,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:52:48 BoogieIcfgContainer [2023-08-23 23:52:48,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:52:48,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:52:48,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:52:48,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:52:48,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:52:47" (1/3) ... [2023-08-23 23:52:48,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72277f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:52:48, skipping insertion in model container [2023-08-23 23:52:48,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:48" (2/3) ... [2023-08-23 23:52:48,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72277f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:52:48, skipping insertion in model container [2023-08-23 23:52:48,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:52:48" (3/3) ... [2023-08-23 23:52:48,543 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_47-refine-protected2_true.i [2023-08-23 23:52:48,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:52:48,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-23 23:52:48,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:52:48,606 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:52:48,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 60 transitions, 125 flow [2023-08-23 23:52:48,677 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2023-08-23 23:52:48,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:48,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 57 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-23 23:52:48,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 60 transitions, 125 flow [2023-08-23 23:52:48,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 93 flow [2023-08-23 23:52:48,688 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:52:48,698 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 45 transitions, 93 flow [2023-08-23 23:52:48,701 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 45 transitions, 93 flow [2023-08-23 23:52:48,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 93 flow [2023-08-23 23:52:48,720 INFO L124 PetriNetUnfolderBase]: 0/45 cut-off events. [2023-08-23 23:52:48,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:48,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-23 23:52:48,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 224 [2023-08-23 23:52:49,945 INFO L134 LiptonReduction]: Checked pairs total: 458 [2023-08-23 23:52:49,945 INFO L136 LiptonReduction]: Total number of compositions: 35 [2023-08-23 23:52:49,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:52:49,957 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;@6f14eee9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:52:49,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-23 23:52:49,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:52:49,959 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-23 23:52:49,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:49,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:52:49,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-23 23:52:49,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:52:49,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:52:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash 196486945, now seen corresponding path program 1 times [2023-08-23 23:52:49,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:52:49,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084337309] [2023-08-23 23:52:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:52:49,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:52:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:52:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:52:50,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:52:50,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084337309] [2023-08-23 23:52:50,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084337309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:52:50,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:52:50,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:52:50,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092713960] [2023-08-23 23:52:50,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:52:50,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:52:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:52:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:52:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:52:50,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 95 [2023-08-23 23:52:50,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 23 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-08-23 23:52:50,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:52:50,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 95 [2023-08-23 23:52:50,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:52:50,177 INFO L124 PetriNetUnfolderBase]: 8/29 cut-off events. [2023-08-23 23:52:50,178 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:50,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 8/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 62 event pairs, 4 based on Foata normal form. 4/31 useless extension candidates. Maximal degree in co-relation 54. Up to 15 conditions per place. [2023-08-23 23:52:50,179 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 9 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2023-08-23 23:52:50,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 13 transitions, 55 flow [2023-08-23 23:52:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:52:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:52:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2023-08-23 23:52:50,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684210526315789 [2023-08-23 23:52:50,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2023-08-23 23:52:50,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2023-08-23 23:52:50,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:52:50,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2023-08-23 23:52:50,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-23 23:52:50,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-23 23:52:50,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-23 23:52:50,203 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 23 flow. Second operand 3 states and 162 transitions. [2023-08-23 23:52:50,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 13 transitions, 55 flow [2023-08-23 23:52:50,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:52:50,206 INFO L231 Difference]: Finished difference. Result has 17 places, 10 transitions, 40 flow [2023-08-23 23:52:50,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=17, PETRI_TRANSITIONS=10} [2023-08-23 23:52:50,209 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, 3 predicate places. [2023-08-23 23:52:50,210 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 10 transitions, 40 flow [2023-08-23 23:52:50,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-08-23 23:52:50,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:52:50,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:52:50,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:52:50,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:52:50,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:52:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash -167911658, now seen corresponding path program 1 times [2023-08-23 23:52:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:52:50,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162149548] [2023-08-23 23:52:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:52:50,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:52:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:52:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:52:50,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:52:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162149548] [2023-08-23 23:52:50,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162149548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:52:50,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:52:50,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:52:50,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708767141] [2023-08-23 23:52:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:52:50,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:52:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:52:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:52:50,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:52:50,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2023-08-23 23:52:50,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 10 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-08-23 23:52:50,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:52:50,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2023-08-23 23:52:50,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:52:50,337 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-23 23:52:50,338 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 23:52:50,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 10 events. 0/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 3/13 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-23 23:52:50,338 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 4 selfloop transitions, 3 changer transitions 1/9 dead transitions. [2023-08-23 23:52:50,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 9 transitions, 50 flow [2023-08-23 23:52:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:52:50,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:52:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-08-23 23:52:50,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2023-08-23 23:52:50,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-08-23 23:52:50,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-08-23 23:52:50,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:52:50,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-08-23 23:52:50,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-08-23 23:52:50,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-23 23:52:50,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-23 23:52:50,347 INFO L175 Difference]: Start difference. First operand has 17 places, 10 transitions, 40 flow. Second operand 3 states and 144 transitions. [2023-08-23 23:52:50,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 9 transitions, 50 flow [2023-08-23 23:52:50,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:52:50,347 INFO L231 Difference]: Finished difference. Result has 16 places, 8 transitions, 32 flow [2023-08-23 23:52:50,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=8} [2023-08-23 23:52:50,348 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, 2 predicate places. [2023-08-23 23:52:50,348 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 8 transitions, 32 flow [2023-08-23 23:52:50,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-08-23 23:52:50,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:52:50,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:52:50,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:52:50,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:52:50,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:52:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash -917079396, now seen corresponding path program 1 times [2023-08-23 23:52:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:52:50,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862847020] [2023-08-23 23:52:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:52:50,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:52:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:52:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:52:50,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:52:50,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862847020] [2023-08-23 23:52:50,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862847020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:52:50,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:52:50,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:52:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261130505] [2023-08-23 23:52:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:52:50,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:52:50,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:52:50,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:52:50,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:52:50,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 95 [2023-08-23 23:52:50,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 8 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-08-23 23:52:50,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:52:50,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 95 [2023-08-23 23:52:50,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:52:50,428 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-23 23:52:50,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:50,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-23 23:52:50,429 INFO L140 encePairwiseOnDemand]: 93/95 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-23 23:52:50,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 8 transitions, 48 flow [2023-08-23 23:52:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:52:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:52:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-08-23 23:52:50,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2023-08-23 23:52:50,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-08-23 23:52:50,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-08-23 23:52:50,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:52:50,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-08-23 23:52:50,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-08-23 23:52:50,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-23 23:52:50,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-23 23:52:50,432 INFO L175 Difference]: Start difference. First operand has 16 places, 8 transitions, 32 flow. Second operand 3 states and 156 transitions. [2023-08-23 23:52:50,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 8 transitions, 48 flow [2023-08-23 23:52:50,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 8 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:52:50,433 INFO L231 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2023-08-23 23:52:50,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2023-08-23 23:52:50,434 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, 0 predicate places. [2023-08-23 23:52:50,434 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2023-08-23 23:52:50,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-08-23 23:52:50,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-23 23:52:50,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-23 23:52:50,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-23 23:52:50,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:52:50,437 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-23 23:52:50,439 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:52:50,439 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:52:50,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:52:50 BasicIcfg [2023-08-23 23:52:50,443 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:52:50,446 INFO L158 Benchmark]: Toolchain (without parser) took 2565.30ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 321.0MB in the beginning and 382.8MB in the end (delta: -61.8MB). Peak memory consumption was 9.8MB. Max. memory is 16.0GB. [2023-08-23 23:52:50,447 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 233.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:52:50,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.12ms. Allocated memory is still 364.9MB. Free memory was 320.7MB in the beginning and 330.9MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2023-08-23 23:52:50,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.48ms. Allocated memory is still 364.9MB. Free memory was 330.9MB in the beginning and 329.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:52:50,448 INFO L158 Benchmark]: Boogie Preprocessor took 14.04ms. Allocated memory is still 364.9MB. Free memory was 329.1MB in the beginning and 327.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:52:50,449 INFO L158 Benchmark]: RCFGBuilder took 325.10ms. Allocated memory is still 364.9MB. Free memory was 327.7MB in the beginning and 341.6MB in the end (delta: -13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-23 23:52:50,451 INFO L158 Benchmark]: TraceAbstraction took 1904.49ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 340.8MB in the beginning and 382.8MB in the end (delta: -42.0MB). Peak memory consumption was 31.2MB. Max. memory is 16.0GB. [2023-08-23 23:52:50,457 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 233.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 275.12ms. Allocated memory is still 364.9MB. Free memory was 320.7MB in the beginning and 330.9MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.48ms. Allocated memory is still 364.9MB. Free memory was 330.9MB in the beginning and 329.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.04ms. Allocated memory is still 364.9MB. Free memory was 329.1MB in the beginning and 327.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 325.10ms. Allocated memory is still 364.9MB. Free memory was 327.7MB in the beginning and 341.6MB in the end (delta: -13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 1904.49ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 340.8MB in the beginning and 382.8MB in the end (delta: -42.0MB). Peak memory consumption was 31.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 49 PlacesBefore, 14 PlacesAfterwards, 45 TransitionsBefore, 10 TransitionsAfterwards, 224 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 35 TotalNumberOfCompositions, 458 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 317, independent: 242, independent conditional: 0, independent unconditional: 242, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 130, independent: 114, independent conditional: 0, independent unconditional: 114, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 317, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 130, unknown conditional: 0, unknown unconditional: 130] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 67 locations, 3 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: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=1, InterpolantAutomatonStates: 9, 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-23 23:52:50,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...