/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 12:32:45,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 12:32:45,264 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 [2023-08-24 12:32:45,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 12:32:45,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 12:32:45,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 12:32:45,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 12:32:45,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 12:32:45,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 12:32:45,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 12:32:45,300 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 12:32:45,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 12:32:45,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 12:32:45,301 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 12:32:45,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 12:32:45,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 12:32:45,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 12:32:45,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 12:32:45,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 12:32:45,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 12:32:45,302 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 12:32:45,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 12:32:45,303 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 12:32:45,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 12:32:45,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 12:32:45,304 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 12:32:45,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 12:32:45,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:32:45,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 12:32:45,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 12:32:45,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 12:32:45,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 12:32:45,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 12:32:45,305 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 12:32:45,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 12:32:45,306 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 12:32:45,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 12:32:45,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 12:32:45,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 12:32:45,579 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 12:32:45,579 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 12:32:45,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2023-08-24 12:32:46,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 12:32:46,789 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 12:32:46,790 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2023-08-24 12:32:46,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57598531/7dc4ea6183fc49e9a1b8f1745882899e/FLAG875668cfc [2023-08-24 12:32:46,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57598531/7dc4ea6183fc49e9a1b8f1745882899e [2023-08-24 12:32:46,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 12:32:46,814 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 12:32:46,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 12:32:46,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 12:32:46,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 12:32:46,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:32:46" (1/1) ... [2023-08-24 12:32:46,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68856d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:46, skipping insertion in model container [2023-08-24 12:32:46,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:32:46" (1/1) ... [2023-08-24 12:32:46,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 12:32:46,953 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_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2023-08-24 12:32:47,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:32:47,085 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 12:32:47,094 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_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2023-08-24 12:32:47,115 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-24 12:32:47,116 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-24 12:32:47,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:32:47,168 INFO L206 MainTranslator]: Completed translation [2023-08-24 12:32:47,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47 WrapperNode [2023-08-24 12:32:47,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 12:32:47,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 12:32:47,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 12:32:47,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 12:32:47,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,217 INFO L138 Inliner]: procedures = 163, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-08-24 12:32:47,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 12:32:47,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 12:32:47,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 12:32:47,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 12:32:47,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 12:32:47,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 12:32:47,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 12:32:47,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 12:32:47,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (1/1) ... [2023-08-24 12:32:47,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:32:47,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 12:32:47,295 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) [2023-08-24 12:32:47,313 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 [2023-08-24 12:32:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 12:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 12:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 12:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 12:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 12:32:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 12:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 12:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 12:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 12:32:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 12:32:47,325 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 12:32:47,434 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 12:32:47,435 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 12:32:47,638 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 12:32:47,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 12:32:47,643 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 12:32:47,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:32:47 BoogieIcfgContainer [2023-08-24 12:32:47,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 12:32:47,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 12:32:47,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 12:32:47,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 12:32:47,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:32:46" (1/3) ... [2023-08-24 12:32:47,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c749e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:32:47, skipping insertion in model container [2023-08-24 12:32:47,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:47" (2/3) ... [2023-08-24 12:32:47,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c749e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:32:47, skipping insertion in model container [2023-08-24 12:32:47,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:32:47" (3/3) ... [2023-08-24 12:32:47,650 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2023-08-24 12:32:47,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 12:32:47,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 12:32:47,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 12:32:47,714 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 12:32:47,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 85 transitions, 175 flow [2023-08-24 12:32:47,786 INFO L124 PetriNetUnfolderBase]: 2/84 cut-off events. [2023-08-24 12:32:47,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:47,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 2/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-24 12:32:47,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 85 transitions, 175 flow [2023-08-24 12:32:47,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 76 transitions, 155 flow [2023-08-24 12:32:47,841 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 12:32:47,862 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 76 transitions, 155 flow [2023-08-24 12:32:47,868 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 76 transitions, 155 flow [2023-08-24 12:32:47,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 76 transitions, 155 flow [2023-08-24 12:32:47,886 INFO L124 PetriNetUnfolderBase]: 1/76 cut-off events. [2023-08-24 12:32:47,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:47,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 76 events. 1/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-08-24 12:32:47,887 INFO L119 LiptonReduction]: Number of co-enabled transitions 782 [2023-08-24 12:32:50,194 INFO L134 LiptonReduction]: Checked pairs total: 2315 [2023-08-24 12:32:50,197 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-24 12:32:50,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 12:32:50,210 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;@1e114ec2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 12:32:50,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 12:32:50,213 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 12:32:50,213 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-24 12:32:50,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:50,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:50,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:50,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:32:50,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:50,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1401573557, now seen corresponding path program 1 times [2023-08-24 12:32:50,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:50,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647295683] [2023-08-24 12:32:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:50,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:50,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647295683] [2023-08-24 12:32:50,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647295683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:50,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:50,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:32:50,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588337091] [2023-08-24 12:32:50,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:50,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:50,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:50,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 144 [2023-08-24 12:32:50,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2023-08-24 12:32:50,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:50,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 144 [2023-08-24 12:32:50,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:50,571 INFO L124 PetriNetUnfolderBase]: 39/118 cut-off events. [2023-08-24 12:32:50,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:50,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 118 events. 39/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 379 event pairs, 22 based on Foata normal form. 8/117 useless extension candidates. Maximal degree in co-relation 208. Up to 57 conditions per place. [2023-08-24 12:32:50,575 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 17 selfloop transitions, 3 changer transitions 8/33 dead transitions. [2023-08-24 12:32:50,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 125 flow [2023-08-24 12:32:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 12:32:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 12:32:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 415 transitions. [2023-08-24 12:32:50,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2023-08-24 12:32:50,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 415 transitions. [2023-08-24 12:32:50,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 415 transitions. [2023-08-24 12:32:50,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:50,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 415 transitions. [2023-08-24 12:32:50,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-08-24 12:32:50,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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) [2023-08-24 12:32:50,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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) [2023-08-24 12:32:50,611 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 43 flow. Second operand 5 states and 415 transitions. [2023-08-24 12:32:50,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 125 flow [2023-08-24 12:32:50,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:32:50,616 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 57 flow [2023-08-24 12:32:50,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=57, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-24 12:32:50,620 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2023-08-24 12:32:50,620 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 57 flow [2023-08-24 12:32:50,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2023-08-24 12:32:50,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:50,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:50,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 12:32:50,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:32:50,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash 311293715, now seen corresponding path program 1 times [2023-08-24 12:32:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:50,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323189091] [2023-08-24 12:32:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:50,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:50,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323189091] [2023-08-24 12:32:50,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323189091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:50,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:50,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:32:50,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401810309] [2023-08-24 12:32:50,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:32:50,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:32:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:32:50,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-24 12:32:50,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2023-08-24 12:32:50,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:50,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-24 12:32:50,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:50,821 INFO L124 PetriNetUnfolderBase]: 48/128 cut-off events. [2023-08-24 12:32:50,821 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-24 12:32:50,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 128 events. 48/128 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 414 event pairs, 15 based on Foata normal form. 2/123 useless extension candidates. Maximal degree in co-relation 270. Up to 84 conditions per place. [2023-08-24 12:32:50,822 INFO L140 encePairwiseOnDemand]: 136/144 looper letters, 20 selfloop transitions, 5 changer transitions 5/33 dead transitions. [2023-08-24 12:32:50,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 147 flow [2023-08-24 12:32:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:32:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:32:50,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-24 12:32:50,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2023-08-24 12:32:50,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-24 12:32:50,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-24 12:32:50,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:50,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-24 12:32:50,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-08-24 12:32:50,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-08-24 12:32:50,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-08-24 12:32:50,827 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 57 flow. Second operand 3 states and 218 transitions. [2023-08-24 12:32:50,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 147 flow [2023-08-24 12:32:50,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 133 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 12:32:50,828 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 76 flow [2023-08-24 12:32:50,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-24 12:32:50,829 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-24 12:32:50,829 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 76 flow [2023-08-24 12:32:50,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2023-08-24 12:32:50,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:50,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:50,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 12:32:50,830 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:32:50,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:50,833 INFO L85 PathProgramCache]: Analyzing trace with hash 231016505, now seen corresponding path program 2 times [2023-08-24 12:32:50,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:50,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363965609] [2023-08-24 12:32:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:50,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:50,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363965609] [2023-08-24 12:32:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363965609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:50,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:50,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 12:32:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161218309] [2023-08-24 12:32:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 12:32:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 12:32:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-24 12:32:50,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 144 [2023-08-24 12:32:50,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2023-08-24 12:32:50,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:50,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 144 [2023-08-24 12:32:50,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:51,030 INFO L124 PetriNetUnfolderBase]: 21/74 cut-off events. [2023-08-24 12:32:51,030 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-24 12:32:51,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 74 events. 21/74 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 177 event pairs, 6 based on Foata normal form. 10/84 useless extension candidates. Maximal degree in co-relation 184. Up to 42 conditions per place. [2023-08-24 12:32:51,031 INFO L140 encePairwiseOnDemand]: 137/144 looper letters, 9 selfloop transitions, 5 changer transitions 11/27 dead transitions. [2023-08-24 12:32:51,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 142 flow [2023-08-24 12:32:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:51,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2023-08-24 12:32:51,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3940972222222222 [2023-08-24 12:32:51,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 227 transitions. [2023-08-24 12:32:51,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 227 transitions. [2023-08-24 12:32:51,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:51,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 227 transitions. [2023-08-24 12:32:51,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2023-08-24 12:32:51,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-08-24 12:32:51,034 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-08-24 12:32:51,034 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 76 flow. Second operand 4 states and 227 transitions. [2023-08-24 12:32:51,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 142 flow [2023-08-24 12:32:51,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:32:51,035 INFO L231 Difference]: Finished difference. Result has 28 places, 15 transitions, 56 flow [2023-08-24 12:32:51,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=15} [2023-08-24 12:32:51,035 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-08-24 12:32:51,036 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 15 transitions, 56 flow [2023-08-24 12:32:51,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2023-08-24 12:32:51,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:51,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:51,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 12:32:51,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:32:51,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash 224021546, now seen corresponding path program 1 times [2023-08-24 12:32:51,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:51,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952016191] [2023-08-24 12:32:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:51,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952016191] [2023-08-24 12:32:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952016191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:51,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 12:32:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595848472] [2023-08-24 12:32:51,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:51,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 12:32:51,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:51,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 12:32:51,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-24 12:32:51,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 144 [2023-08-24 12:32:51,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 15 transitions, 56 flow. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2023-08-24 12:32:51,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:51,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 144 [2023-08-24 12:32:51,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:51,168 INFO L124 PetriNetUnfolderBase]: 7/32 cut-off events. [2023-08-24 12:32:51,169 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-24 12:32:51,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 32 events. 7/32 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 79. Up to 23 conditions per place. [2023-08-24 12:32:51,169 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 9 selfloop transitions, 2 changer transitions 5/18 dead transitions. [2023-08-24 12:32:51,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 18 transitions, 98 flow [2023-08-24 12:32:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2023-08-24 12:32:51,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3767361111111111 [2023-08-24 12:32:51,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 217 transitions. [2023-08-24 12:32:51,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 217 transitions. [2023-08-24 12:32:51,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:51,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 217 transitions. [2023-08-24 12:32:51,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2023-08-24 12:32:51,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-08-24 12:32:51,172 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-08-24 12:32:51,172 INFO L175 Difference]: Start difference. First operand has 28 places, 15 transitions, 56 flow. Second operand 4 states and 217 transitions. [2023-08-24 12:32:51,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 18 transitions, 98 flow [2023-08-24 12:32:51,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 12:32:51,173 INFO L231 Difference]: Finished difference. Result has 23 places, 12 transitions, 42 flow [2023-08-24 12:32:51,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2023-08-24 12:32:51,174 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2023-08-24 12:32:51,174 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 42 flow [2023-08-24 12:32:51,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2023-08-24 12:32:51,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:51,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:51,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 12:32:51,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:32:51,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash 632081518, now seen corresponding path program 1 times [2023-08-24 12:32:51,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:51,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112764375] [2023-08-24 12:32:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:51,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:51,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:51,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112764375] [2023-08-24 12:32:51,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112764375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:51,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:51,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 12:32:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380046001] [2023-08-24 12:32:51,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:51,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 12:32:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 12:32:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 12:32:51,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 144 [2023-08-24 12:32:51,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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) [2023-08-24 12:32:51,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:51,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 144 [2023-08-24 12:32:51,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:51,256 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-08-24 12:32:51,256 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 12:32:51,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 21 events. 2/21 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 46. Up to 11 conditions per place. [2023-08-24 12:32:51,256 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 5 selfloop transitions, 5 changer transitions 1/13 dead transitions. [2023-08-24 12:32:51,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 13 transitions, 69 flow [2023-08-24 12:32:51,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2023-08-24 12:32:51,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2023-08-24 12:32:51,259 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 237 transitions. [2023-08-24 12:32:51,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 237 transitions. [2023-08-24 12:32:51,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:51,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 237 transitions. [2023-08-24 12:32:51,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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) [2023-08-24 12:32:51,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-08-24 12:32:51,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-08-24 12:32:51,261 INFO L175 Difference]: Start difference. First operand has 23 places, 12 transitions, 42 flow. Second operand 4 states and 237 transitions. [2023-08-24 12:32:51,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 13 transitions, 69 flow [2023-08-24 12:32:51,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 13 transitions, 65 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:32:51,263 INFO L231 Difference]: Finished difference. Result has 22 places, 12 transitions, 49 flow [2023-08-24 12:32:51,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=49, PETRI_PLACES=22, PETRI_TRANSITIONS=12} [2023-08-24 12:32:51,264 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2023-08-24 12:32:51,265 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 12 transitions, 49 flow [2023-08-24 12:32:51,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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) [2023-08-24 12:32:51,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:51,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:51,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 12:32:51,265 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:32:51,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 222977900, now seen corresponding path program 2 times [2023-08-24 12:32:51,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:51,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119268889] [2023-08-24 12:32:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:51,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:51,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119268889] [2023-08-24 12:32:51,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119268889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:51,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:51,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:32:51,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173874672] [2023-08-24 12:32:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:51,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:51,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:51,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 144 [2023-08-24 12:32:51,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 12 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2023-08-24 12:32:51,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:51,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 144 [2023-08-24 12:32:51,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:51,377 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-08-24 12:32:51,377 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 12:32:51,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 16 events. 2/16 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2023-08-24 12:32:51,378 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-24 12:32:51,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 11 transitions, 67 flow [2023-08-24 12:32:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2023-08-24 12:32:51,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079861111111111 [2023-08-24 12:32:51,379 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 235 transitions. [2023-08-24 12:32:51,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 235 transitions. [2023-08-24 12:32:51,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:51,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 235 transitions. [2023-08-24 12:32:51,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2023-08-24 12:32:51,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-08-24 12:32:51,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-08-24 12:32:51,380 INFO L175 Difference]: Start difference. First operand has 22 places, 12 transitions, 49 flow. Second operand 4 states and 235 transitions. [2023-08-24 12:32:51,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 11 transitions, 67 flow [2023-08-24 12:32:51,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 60 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 12:32:51,381 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-24 12:32:51,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-24 12:32:51,383 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2023-08-24 12:32:51,383 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-24 12:32:51,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2023-08-24 12:32:51,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-24 12:32:51,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 12:32:51,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 12:32:51,385 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-24 12:32:51,387 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 12:32:51,387 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 12:32:51,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:32:51 BasicIcfg [2023-08-24 12:32:51,390 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 12:32:51,391 INFO L158 Benchmark]: Toolchain (without parser) took 4575.96ms. Allocated memory was 356.5MB in the beginning and 476.1MB in the end (delta: 119.5MB). Free memory was 332.1MB in the beginning and 364.4MB in the end (delta: -32.4MB). Peak memory consumption was 87.6MB. Max. memory is 16.0GB. [2023-08-24 12:32:51,391 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 356.5MB. Free memory is still 332.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 12:32:51,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.76ms. Allocated memory is still 356.5MB. Free memory was 331.7MB in the beginning and 312.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 12:32:51,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.07ms. Allocated memory is still 356.5MB. Free memory was 312.4MB in the beginning and 310.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:32:51,396 INFO L158 Benchmark]: Boogie Preprocessor took 30.39ms. Allocated memory is still 356.5MB. Free memory was 310.2MB in the beginning and 309.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:32:51,396 INFO L158 Benchmark]: RCFGBuilder took 395.76ms. Allocated memory is still 356.5MB. Free memory was 309.0MB in the beginning and 295.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 12:32:51,397 INFO L158 Benchmark]: TraceAbstraction took 3743.84ms. Allocated memory was 356.5MB in the beginning and 476.1MB in the end (delta: 119.5MB). Free memory was 294.3MB in the beginning and 364.4MB in the end (delta: -70.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.0GB. [2023-08-24 12:32:51,397 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 356.5MB. Free memory is still 332.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 353.76ms. Allocated memory is still 356.5MB. Free memory was 331.7MB in the beginning and 312.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.07ms. Allocated memory is still 356.5MB. Free memory was 312.4MB in the beginning and 310.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.39ms. Allocated memory is still 356.5MB. Free memory was 310.2MB in the beginning and 309.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 395.76ms. Allocated memory is still 356.5MB. Free memory was 309.0MB in the beginning and 295.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3743.84ms. Allocated memory was 356.5MB in the beginning and 476.1MB in the end (delta: 119.5MB). Free memory was 294.3MB in the beginning and 364.4MB in the end (delta: -70.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 79 PlacesBefore, 23 PlacesAfterwards, 76 TransitionsBefore, 20 TransitionsAfterwards, 782 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 2315 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 939, independent: 761, independent conditional: 0, independent unconditional: 761, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 379, independent: 348, independent conditional: 0, independent unconditional: 348, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 939, independent: 413, independent conditional: 0, independent unconditional: 413, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 379, unknown conditional: 0, unknown unconditional: 379] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 103 locations, 2 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: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 6 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=2, InterpolantAutomatonStates: 24, 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, 0.6s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 12:32:51,412 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...