/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_69-refine-protected-loop-interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 12:33:37,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 12:33:37,271 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 12:33:37,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 12:33:37,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 12:33:37,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 12:33:37,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 12:33:37,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 12:33:37,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 12:33:37,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 12:33:37,308 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 12:33:37,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 12:33:37,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 12:33:37,309 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 12:33:37,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 12:33:37,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 12:33:37,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 12:33:37,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 12:33:37,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 12:33:37,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 12:33:37,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 12:33:37,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 12:33:37,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 12:33:37,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 12:33:37,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 12:33:37,312 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 12:33:37,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 12:33:37,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:33:37,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 12:33:37,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 12:33:37,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 12:33:37,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 12:33:37,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 12:33:37,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 12:33:37,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 12:33:37,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 12:33:37,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 12:33:37,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 12:33:37,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 12:33:37,648 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 12:33:37,648 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 12:33:37,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-24 12:33:38,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 12:33:39,128 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 12:33:39,128 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-24 12:33:39,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf16d4895/4fcd8fba563c4327ab00be8e96a9f982/FLAGbfc802ab5 [2023-08-24 12:33:39,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf16d4895/4fcd8fba563c4327ab00be8e96a9f982 [2023-08-24 12:33:39,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 12:33:39,156 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 12:33:39,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 12:33:39,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 12:33:39,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 12:33:39,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf26353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39, skipping insertion in model container [2023-08-24 12:33:39,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,204 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 12:33:39,341 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_69-refine-protected-loop-interval_true.i[1107,1120] [2023-08-24 12:33:39,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:33:39,545 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 12:33:39,555 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_69-refine-protected-loop-interval_true.i[1107,1120] [2023-08-24 12:33:39,574 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-24 12:33:39,575 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-24 12:33:39,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:33:39,638 INFO L206 MainTranslator]: Completed translation [2023-08-24 12:33:39,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39 WrapperNode [2023-08-24 12:33:39,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 12:33:39,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 12:33:39,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 12:33:39,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 12:33:39,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,703 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 98 [2023-08-24 12:33:39,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 12:33:39,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 12:33:39,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 12:33:39,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 12:33:39,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 12:33:39,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 12:33:39,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 12:33:39,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 12:33:39,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (1/1) ... [2023-08-24 12:33:39,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:33:39,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 12:33:39,774 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 12:33:39,783 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 12:33:39,814 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-24 12:33:39,814 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-24 12:33:39,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 12:33:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 12:33:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 12:33:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 12:33:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 12:33:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 12:33:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 12:33:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 12:33:39,817 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 12:33:39,967 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 12:33:39,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 12:33:40,198 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 12:33:40,210 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 12:33:40,210 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 12:33:40,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:33:40 BoogieIcfgContainer [2023-08-24 12:33:40,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 12:33:40,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 12:33:40,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 12:33:40,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 12:33:40,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:33:39" (1/3) ... [2023-08-24 12:33:40,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ad736f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:33:40, skipping insertion in model container [2023-08-24 12:33:40,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:39" (2/3) ... [2023-08-24 12:33:40,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ad736f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:33:40, skipping insertion in model container [2023-08-24 12:33:40,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:33:40" (3/3) ... [2023-08-24 12:33:40,222 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-08-24 12:33:40,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 12:33:40,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 12:33:40,241 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 12:33:40,322 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 12:33:40,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 106 transitions, 217 flow [2023-08-24 12:33:40,451 INFO L124 PetriNetUnfolderBase]: 10/105 cut-off events. [2023-08-24 12:33:40,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:40,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 10/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-24 12:33:40,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 106 transitions, 217 flow [2023-08-24 12:33:40,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 105 transitions, 213 flow [2023-08-24 12:33:40,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 12:33:40,483 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 105 transitions, 213 flow [2023-08-24 12:33:40,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 105 transitions, 213 flow [2023-08-24 12:33:40,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 105 transitions, 213 flow [2023-08-24 12:33:40,518 INFO L124 PetriNetUnfolderBase]: 10/105 cut-off events. [2023-08-24 12:33:40,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:40,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 10/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 177 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-24 12:33:40,523 INFO L119 LiptonReduction]: Number of co-enabled transitions 2552 [2023-08-24 12:33:43,323 INFO L134 LiptonReduction]: Checked pairs total: 4598 [2023-08-24 12:33:43,323 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-24 12:33:43,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 12:33:43,340 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;@69070242, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 12:33:43,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 12:33:43,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 12:33:43,344 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-08-24 12:33:43,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:43,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:43,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 12:33:43,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-24 12:33:43,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:43,349 INFO L85 PathProgramCache]: Analyzing trace with hash -141419982, now seen corresponding path program 1 times [2023-08-24 12:33:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:43,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720762042] [2023-08-24 12:33:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:43,644 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 12:33:43,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720762042] [2023-08-24 12:33:43,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720762042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:43,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 12:33:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823455843] [2023-08-24 12:33:43,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:43,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:33:43,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:33:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:33:43,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 205 [2023-08-24 12:33:43,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 12:33:43,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:43,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 205 [2023-08-24 12:33:43,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:43,759 INFO L124 PetriNetUnfolderBase]: 133/241 cut-off events. [2023-08-24 12:33:43,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:43,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 241 events. 133/241 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 730 event pairs, 64 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 477. Up to 191 conditions per place. [2023-08-24 12:33:43,762 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 30 selfloop transitions, 3 changer transitions 1/35 dead transitions. [2023-08-24 12:33:43,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 141 flow [2023-08-24 12:33:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:33:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:33:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-24 12:33:43,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2023-08-24 12:33:43,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-24 12:33:43,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-24 12:33:43,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:43,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-24 12:33:43,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 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 12:33:43,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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 12:33:43,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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 12:33:43,788 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 57 flow. Second operand 3 states and 290 transitions. [2023-08-24 12:33:43,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 141 flow [2023-08-24 12:33:43,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:33:43,792 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 78 flow [2023-08-24 12:33:43,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-24 12:33:43,799 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-24 12:33:43,799 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 78 flow [2023-08-24 12:33:43,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 12:33:43,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:43,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:33:43,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 12:33:43,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-24 12:33:43,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash -41072245, now seen corresponding path program 1 times [2023-08-24 12:33:43,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:43,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649338184] [2023-08-24 12:33:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:43,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:43,951 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 12:33:43,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:43,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649338184] [2023-08-24 12:33:43,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649338184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:43,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:43,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:33:43,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848931743] [2023-08-24 12:33:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:43,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:33:43,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:43,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:33:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:33:43,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-24 12:33:43,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 12:33:43,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:43,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-24 12:33:43,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:44,010 INFO L124 PetriNetUnfolderBase]: 23/71 cut-off events. [2023-08-24 12:33:44,010 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-24 12:33:44,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 71 events. 23/71 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 1 based on Foata normal form. 8/72 useless extension candidates. Maximal degree in co-relation 139. Up to 41 conditions per place. [2023-08-24 12:33:44,011 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 13 selfloop transitions, 6 changer transitions 3/29 dead transitions. [2023-08-24 12:33:44,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 126 flow [2023-08-24 12:33:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:33:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:33:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-24 12:33:44,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45203252032520325 [2023-08-24 12:33:44,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-24 12:33:44,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-24 12:33:44,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:44,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-24 12:33:44,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 12:33:44,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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 12:33:44,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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 12:33:44,017 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 78 flow. Second operand 3 states and 278 transitions. [2023-08-24 12:33:44,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 126 flow [2023-08-24 12:33:44,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:33:44,019 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 76 flow [2023-08-24 12:33:44,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-08-24 12:33:44,020 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-24 12:33:44,020 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 76 flow [2023-08-24 12:33:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 12:33:44,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:44,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:33:44,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 12:33:44,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-24 12:33:44,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1369533526, now seen corresponding path program 1 times [2023-08-24 12:33:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:44,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430077214] [2023-08-24 12:33:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:44,133 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 12:33:44,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:44,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430077214] [2023-08-24 12:33:44,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430077214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:44,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:44,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 12:33:44,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404793108] [2023-08-24 12:33:44,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:44,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 12:33:44,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:44,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 12:33:44,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 12:33:44,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 205 [2023-08-24 12:33:44,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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 12:33:44,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:44,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 205 [2023-08-24 12:33:44,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:44,231 INFO L124 PetriNetUnfolderBase]: 27/86 cut-off events. [2023-08-24 12:33:44,231 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 12:33:44,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 86 events. 27/86 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 13 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 205. Up to 37 conditions per place. [2023-08-24 12:33:44,232 INFO L140 encePairwiseOnDemand]: 196/205 looper letters, 26 selfloop transitions, 8 changer transitions 3/38 dead transitions. [2023-08-24 12:33:44,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 190 flow [2023-08-24 12:33:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 12:33:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 12:33:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 525 transitions. [2023-08-24 12:33:44,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2023-08-24 12:33:44,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 525 transitions. [2023-08-24 12:33:44,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 525 transitions. [2023-08-24 12:33:44,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:44,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 525 transitions. [2023-08-24 12:33:44,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 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 12:33:44,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 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 12:33:44,253 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 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 12:33:44,253 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 76 flow. Second operand 6 states and 525 transitions. [2023-08-24 12:33:44,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 190 flow [2023-08-24 12:33:44,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:33:44,258 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 124 flow [2023-08-24 12:33:44,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-24 12:33:44,259 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-08-24 12:33:44,259 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 124 flow [2023-08-24 12:33:44,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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 12:33:44,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:44,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:33:44,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 12:33:44,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-24 12:33:44,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash 494134274, now seen corresponding path program 1 times [2023-08-24 12:33:44,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:44,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498373096] [2023-08-24 12:33:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:44,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:44,395 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 12:33:44,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:44,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498373096] [2023-08-24 12:33:44,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498373096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:44,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:44,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:33:44,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515277711] [2023-08-24 12:33:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:44,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:33:44,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:44,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:33:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:33:44,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 205 [2023-08-24 12:33:44,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 12:33:44,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:44,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 205 [2023-08-24 12:33:44,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:44,494 INFO L124 PetriNetUnfolderBase]: 36/108 cut-off events. [2023-08-24 12:33:44,494 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-24 12:33:44,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 108 events. 36/108 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 9 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 295. Up to 41 conditions per place. [2023-08-24 12:33:44,495 INFO L140 encePairwiseOnDemand]: 198/205 looper letters, 43 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2023-08-24 12:33:44,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 354 flow [2023-08-24 12:33:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 12:33:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 12:33:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-08-24 12:33:44,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390243902439025 [2023-08-24 12:33:44,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-08-24 12:33:44,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-08-24 12:33:44,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:44,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-08-24 12:33:44,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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 12:33:44,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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 12:33:44,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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 12:33:44,512 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 124 flow. Second operand 5 states and 455 transitions. [2023-08-24 12:33:44,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 354 flow [2023-08-24 12:33:44,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:33:44,517 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 216 flow [2023-08-24 12:33:44,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-08-24 12:33:44,518 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-08-24 12:33:44,518 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 216 flow [2023-08-24 12:33:44,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 12:33:44,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:44,520 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:33:44,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 12:33:44,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-24 12:33:44,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1536266260, now seen corresponding path program 2 times [2023-08-24 12:33:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:44,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201469987] [2023-08-24 12:33:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:44,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:33:44,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201469987] [2023-08-24 12:33:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201469987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 12:33:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000810100] [2023-08-24 12:33:44,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 12:33:44,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 12:33:44,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 12:33:44,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 12:33:44,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 12:33:44,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 12:33:44,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 12:33:44,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 12:33:44,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 12:33:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:33:44,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 12:33:44,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000810100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:44,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 12:33:44,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-08-24 12:33:44,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056823571] [2023-08-24 12:33:44,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:44,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 12:33:44,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:44,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 12:33:44,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-24 12:33:44,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 205 [2023-08-24 12:33:44,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 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 12:33:44,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:44,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 205 [2023-08-24 12:33:44,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:45,004 INFO L124 PetriNetUnfolderBase]: 42/130 cut-off events. [2023-08-24 12:33:45,004 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-08-24 12:33:45,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 130 events. 42/130 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 323 event pairs, 19 based on Foata normal form. 4/134 useless extension candidates. Maximal degree in co-relation 399. Up to 55 conditions per place. [2023-08-24 12:33:45,006 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 41 selfloop transitions, 13 changer transitions 3/58 dead transitions. [2023-08-24 12:33:45,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 416 flow [2023-08-24 12:33:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 12:33:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 12:33:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 779 transitions. [2023-08-24 12:33:45,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-08-24 12:33:45,010 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 779 transitions. [2023-08-24 12:33:45,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 779 transitions. [2023-08-24 12:33:45,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:45,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 779 transitions. [2023-08-24 12:33:45,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 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 12:33:45,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 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 12:33:45,016 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 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 12:33:45,016 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 216 flow. Second operand 9 states and 779 transitions. [2023-08-24 12:33:45,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 416 flow [2023-08-24 12:33:45,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 12:33:45,023 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 298 flow [2023-08-24 12:33:45,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-24 12:33:45,026 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2023-08-24 12:33:45,026 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 298 flow [2023-08-24 12:33:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 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 12:33:45,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:45,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:33:45,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 12:33:45,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 12:33:45,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-24 12:33:45,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:45,232 INFO L85 PathProgramCache]: Analyzing trace with hash -215905892, now seen corresponding path program 1 times [2023-08-24 12:33:45,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:45,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256873897] [2023-08-24 12:33:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:45,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:33:45,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:45,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256873897] [2023-08-24 12:33:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256873897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:45,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 12:33:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279568598] [2023-08-24 12:33:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 12:33:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 12:33:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 12:33:45,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 205 [2023-08-24 12:33:45,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 12:33:45,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:45,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 205 [2023-08-24 12:33:45,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:45,465 INFO L124 PetriNetUnfolderBase]: 47/144 cut-off events. [2023-08-24 12:33:45,465 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-24 12:33:45,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 144 events. 47/144 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 359 event pairs, 16 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 493. Up to 57 conditions per place. [2023-08-24 12:33:45,467 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 34 selfloop transitions, 18 changer transitions 7/60 dead transitions. [2023-08-24 12:33:45,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 507 flow [2023-08-24 12:33:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 12:33:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 12:33:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 532 transitions. [2023-08-24 12:33:45,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432520325203252 [2023-08-24 12:33:45,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 532 transitions. [2023-08-24 12:33:45,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 532 transitions. [2023-08-24 12:33:45,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:45,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 532 transitions. [2023-08-24 12:33:45,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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 12:33:45,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 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 12:33:45,474 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 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 12:33:45,474 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 298 flow. Second operand 6 states and 532 transitions. [2023-08-24 12:33:45,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 507 flow [2023-08-24 12:33:45,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 483 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-24 12:33:45,477 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 360 flow [2023-08-24 12:33:45,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-08-24 12:33:45,478 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-24 12:33:45,478 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 360 flow [2023-08-24 12:33:45,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 12:33:45,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:45,479 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:33:45,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 12:33:45,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-24 12:33:45,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:45,480 INFO L85 PathProgramCache]: Analyzing trace with hash -350741980, now seen corresponding path program 2 times [2023-08-24 12:33:45,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:45,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271418282] [2023-08-24 12:33:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:45,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:33:45,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:45,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271418282] [2023-08-24 12:33:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271418282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:45,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:45,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 12:33:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182624873] [2023-08-24 12:33:45,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:45,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 12:33:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 12:33:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 12:33:45,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 205 [2023-08-24 12:33:45,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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 12:33:45,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:45,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 205 [2023-08-24 12:33:45,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:45,644 INFO L124 PetriNetUnfolderBase]: 44/135 cut-off events. [2023-08-24 12:33:45,644 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2023-08-24 12:33:45,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 135 events. 44/135 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 339 event pairs, 19 based on Foata normal form. 2/137 useless extension candidates. Maximal degree in co-relation 487. Up to 83 conditions per place. [2023-08-24 12:33:45,646 INFO L140 encePairwiseOnDemand]: 196/205 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-08-24 12:33:45,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 461 flow [2023-08-24 12:33:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 12:33:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 12:33:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2023-08-24 12:33:45,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40557491289198605 [2023-08-24 12:33:45,649 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2023-08-24 12:33:45,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2023-08-24 12:33:45,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:45,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2023-08-24 12:33:45,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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 12:33:45,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 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 12:33:45,656 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 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 12:33:45,656 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 360 flow. Second operand 7 states and 582 transitions. [2023-08-24 12:33:45,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 461 flow [2023-08-24 12:33:45,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 432 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 12:33:45,660 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-24 12:33:45,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-24 12:33:45,660 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2023-08-24 12:33:45,661 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-24 12:33:45,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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 12:33:45,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-24 12:33:45,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-24 12:33:45,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-24 12:33:45,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-24 12:33:45,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-24 12:33:45,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 12:33:45,664 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-08-24 12:33:45,669 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 12:33:45,669 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 12:33:45,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:33:45 BasicIcfg [2023-08-24 12:33:45,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 12:33:45,678 INFO L158 Benchmark]: Toolchain (without parser) took 6522.06ms. Allocated memory was 343.9MB in the beginning and 438.3MB in the end (delta: 94.4MB). Free memory was 318.7MB in the beginning and 293.7MB in the end (delta: 24.9MB). Peak memory consumption was 120.0MB. Max. memory is 16.0GB. [2023-08-24 12:33:45,678 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 343.9MB. Free memory is still 320.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 12:33:45,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.25ms. Allocated memory is still 343.9MB. Free memory was 318.7MB in the beginning and 298.0MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 12:33:45,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.54ms. Allocated memory is still 343.9MB. Free memory was 298.0MB in the beginning and 296.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:33:45,679 INFO L158 Benchmark]: Boogie Preprocessor took 38.17ms. Allocated memory is still 343.9MB. Free memory was 296.0MB in the beginning and 294.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 12:33:45,679 INFO L158 Benchmark]: RCFGBuilder took 469.21ms. Allocated memory is still 343.9MB. Free memory was 294.3MB in the beginning and 280.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 12:33:45,679 INFO L158 Benchmark]: TraceAbstraction took 5462.07ms. Allocated memory was 343.9MB in the beginning and 438.3MB in the end (delta: 94.4MB). Free memory was 279.6MB in the beginning and 293.7MB in the end (delta: -14.1MB). Peak memory consumption was 82.2MB. Max. memory is 16.0GB. [2023-08-24 12:33:45,681 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 343.9MB. Free memory is still 320.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 482.25ms. Allocated memory is still 343.9MB. Free memory was 318.7MB in the beginning and 298.0MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.54ms. Allocated memory is still 343.9MB. Free memory was 298.0MB in the beginning and 296.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.17ms. Allocated memory is still 343.9MB. Free memory was 296.0MB in the beginning and 294.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 469.21ms. Allocated memory is still 343.9MB. Free memory was 294.3MB in the beginning and 280.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5462.07ms. Allocated memory was 343.9MB in the beginning and 438.3MB in the end (delta: 94.4MB). Free memory was 279.6MB in the beginning and 293.7MB in the end (delta: -14.1MB). Peak memory consumption was 82.2MB. 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: 2.8s, 99 PlacesBefore, 25 PlacesAfterwards, 105 TransitionsBefore, 27 TransitionsAfterwards, 2552 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 4 ChoiceCompositions, 99 TotalNumberOfCompositions, 4598 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3136, independent: 2964, independent conditional: 0, independent unconditional: 2964, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1444, independent: 1408, independent conditional: 0, independent unconditional: 1408, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3136, independent: 1556, independent conditional: 0, independent unconditional: 1556, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 1444, unknown conditional: 0, unknown unconditional: 1444] , Statistics on independence cache: Total cache size (in pairs): 106, Positive cache size: 91, Positive conditional cache size: 0, Positive unconditional cache size: 91, 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 - 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, 136 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 528 IncrementalHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 17 mSDtfsCounter, 528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=6, InterpolantAutomatonStates: 39, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 271 SizeOfPredicates, 4 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 15/19 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! [2023-08-24 12:33:45,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...