/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:52:34,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:52:34,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-23 23:52:34,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:52:34,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:52:34,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:52:34,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:52:34,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:52:34,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:52:34,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:52:34,204 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:52:34,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:52:34,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:52:34,205 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:52:34,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:52:34,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:52:34,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:52:34,206 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:52:34,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:52:34,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:52:34,207 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:52:34,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:52:34,208 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:52:34,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:52:34,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:52:34,209 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:52:34,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:52:34,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:52:34,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:52:34,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:52:34,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:52:34,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:52:34,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:52:34,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:52:34,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:52:34,212 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:52:34,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:52:34,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:52:34,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:52:34,539 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:52:34,539 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:52:34,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-23 23:52:35,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:52:36,038 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:52:36,038 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-23 23:52:36,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca7ad6bf/b869470721ff42cba03d716bda97885c/FLAG185d12074 [2023-08-23 23:52:36,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca7ad6bf/b869470721ff42cba03d716bda97885c [2023-08-23 23:52:36,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:52:36,080 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:52:36,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:52:36,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:52:36,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:52:36,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2edaadbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36, skipping insertion in model container [2023-08-23 23:52:36,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,139 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:52:36,313 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_42-traces-ex-mini_true.i[1091,1104] [2023-08-23 23:52:36,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:52:36,487 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:52:36,501 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_42-traces-ex-mini_true.i[1091,1104] [2023-08-23 23:52:36,515 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-23 23:52:36,517 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-23 23:52:36,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:52:36,575 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:52:36,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36 WrapperNode [2023-08-23 23:52:36,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:52:36,577 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:52:36,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:52:36,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:52:36,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,633 INFO L138 Inliner]: procedures = 162, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2023-08-23 23:52:36,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:52:36,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:52:36,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:52:36,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:52:36,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:52:36,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:52:36,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:52:36,671 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:52:36,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (1/1) ... [2023-08-23 23:52:36,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:52:36,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:52:36,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-23 23:52:36,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-23 23:52:36,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:52:36,746 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-23 23:52:36,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:52:36,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:52:36,747 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-23 23:52:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-23 23:52:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:52:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:52:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:52:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:52:36,749 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:52:36,878 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:52:36,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:52:37,074 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:52:37,080 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:52:37,080 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:52:37,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:52:37 BoogieIcfgContainer [2023-08-23 23:52:37,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:52:37,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:52:37,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:52:37,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:52:37,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:52:36" (1/3) ... [2023-08-23 23:52:37,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db4e645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:52:37, skipping insertion in model container [2023-08-23 23:52:37,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:52:36" (2/3) ... [2023-08-23 23:52:37,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db4e645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:52:37, skipping insertion in model container [2023-08-23 23:52:37,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:52:37" (3/3) ... [2023-08-23 23:52:37,094 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_42-traces-ex-mini_true.i [2023-08-23 23:52:37,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:52:37,110 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:52:37,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:52:37,171 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:52:37,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 72 transitions, 149 flow [2023-08-23 23:52:37,257 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-08-23 23:52:37,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-08-23 23:52:37,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 72 transitions, 149 flow [2023-08-23 23:52:37,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 60 transitions, 123 flow [2023-08-23 23:52:37,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:52:37,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 60 transitions, 123 flow [2023-08-23 23:52:37,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 60 transitions, 123 flow [2023-08-23 23:52:37,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 60 transitions, 123 flow [2023-08-23 23:52:37,316 INFO L124 PetriNetUnfolderBase]: 0/60 cut-off events. [2023-08-23 23:52:37,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:37,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 60 events. 0/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-23 23:52:37,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 286 [2023-08-23 23:52:39,977 INFO L134 LiptonReduction]: Checked pairs total: 710 [2023-08-23 23:52:39,977 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-08-23 23:52:39,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:52:39,995 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;@f1db2d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:52:39,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-23 23:52:39,998 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:52:39,998 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-23 23:52:39,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:39,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:52:39,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-23 23:52:40,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:52:40,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:52:40,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1564391401, now seen corresponding path program 1 times [2023-08-23 23:52:40,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:52:40,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575150068] [2023-08-23 23:52:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:52:40,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:52:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:52:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:52:40,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:52:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575150068] [2023-08-23 23:52:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575150068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:52:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:52:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:52:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142384508] [2023-08-23 23:52:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:52:40,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:52:40,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:52:40,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:52:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:52:40,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2023-08-23 23:52:40,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:52:40,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2023-08-23 23:52:40,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:52:40,339 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2023-08-23 23:52:40,340 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:52:40,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 42 events. 12/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 9 based on Foata normal form. 4/45 useless extension candidates. Maximal degree in co-relation 74. Up to 28 conditions per place. [2023-08-23 23:52:40,342 INFO L140 encePairwiseOnDemand]: 116/120 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-23 23:52:40,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 59 flow [2023-08-23 23:52:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:52:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:52:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-08-23 23:52:40,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805555555555556 [2023-08-23 23:52:40,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-08-23 23:52:40,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-08-23 23:52:40,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:52:40,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-08-23 23:52:40,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,374 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 27 flow. Second operand 3 states and 209 transitions. [2023-08-23 23:52:40,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 59 flow [2023-08-23 23:52:40,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:52:40,378 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 37 flow [2023-08-23 23:52:40,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-23 23:52:40,384 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-23 23:52:40,384 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 37 flow [2023-08-23 23:52:40,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:52:40,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:52:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:52:40,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:52:40,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:52:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash 312425522, now seen corresponding path program 1 times [2023-08-23 23:52:40,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:52:40,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623426531] [2023-08-23 23:52:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:52:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:52:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:52:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:52:40,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:52:40,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623426531] [2023-08-23 23:52:40,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623426531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:52:40,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:52:40,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:52:40,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946191074] [2023-08-23 23:52:40,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:52:40,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:52:40,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:52:40,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:52:40,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:52:40,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 120 [2023-08-23 23:52:40,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:52:40,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 120 [2023-08-23 23:52:40,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:52:40,670 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2023-08-23 23:52:40,670 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-23 23:52:40,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 31 events. 7/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 2 based on Foata normal form. 5/36 useless extension candidates. Maximal degree in co-relation 63. Up to 19 conditions per place. [2023-08-23 23:52:40,671 INFO L140 encePairwiseOnDemand]: 116/120 looper letters, 8 selfloop transitions, 4 changer transitions 1/14 dead transitions. [2023-08-23 23:52:40,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 67 flow [2023-08-23 23:52:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:52:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:52:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2023-08-23 23:52:40,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42291666666666666 [2023-08-23 23:52:40,677 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 203 transitions. [2023-08-23 23:52:40,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 203 transitions. [2023-08-23 23:52:40,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:52:40,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 203 transitions. [2023-08-23 23:52:40,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,684 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,684 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 37 flow. Second operand 4 states and 203 transitions. [2023-08-23 23:52:40,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 67 flow [2023-08-23 23:52:40,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 61 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:52:40,685 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 39 flow [2023-08-23 23:52:40,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=39, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-08-23 23:52:40,686 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-08-23 23:52:40,687 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 39 flow [2023-08-23 23:52:40,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:52:40,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:52:40,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:52:40,688 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:52:40,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:52:40,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1092785255, now seen corresponding path program 1 times [2023-08-23 23:52:40,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:52:40,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230429376] [2023-08-23 23:52:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:52:40,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:52:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:52:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:52:40,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:52:40,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230429376] [2023-08-23 23:52:40,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230429376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:52:40,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:52:40,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:52:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782232170] [2023-08-23 23:52:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:52:40,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:52:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:52:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:52:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:52:40,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 120 [2023-08-23 23:52:40,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 39 flow. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:52:40,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 120 [2023-08-23 23:52:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:52:40,900 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-08-23 23:52:40,900 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 23:52:40,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 2 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 55. Up to 12 conditions per place. [2023-08-23 23:52:40,901 INFO L140 encePairwiseOnDemand]: 116/120 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-23 23:52:40,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 65 flow [2023-08-23 23:52:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:52:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:52:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2023-08-23 23:52:40,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2023-08-23 23:52:40,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 201 transitions. [2023-08-23 23:52:40,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 201 transitions. [2023-08-23 23:52:40,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:52:40,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 201 transitions. [2023-08-23 23:52:40,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,905 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 39 flow. Second operand 4 states and 201 transitions. [2023-08-23 23:52:40,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 65 flow [2023-08-23 23:52:40,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:52:40,905 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-23 23:52:40,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-23 23:52:40,906 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-23 23:52:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-23 23:52:40,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:52:40,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-23 23:52:40,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-23 23:52:40,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:52:40,910 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-23 23:52:40,912 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:52:40,912 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:52:40,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:52:40 BasicIcfg [2023-08-23 23:52:40,915 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:52:40,916 INFO L158 Benchmark]: Toolchain (without parser) took 4836.03ms. Allocated memory was 360.7MB in the beginning and 530.6MB in the end (delta: 169.9MB). Free memory was 335.6MB in the beginning and 495.3MB in the end (delta: -159.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.0GB. [2023-08-23 23:52:40,916 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory was 338.7MB in the beginning and 338.6MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:52:40,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.73ms. Allocated memory is still 360.7MB. Free memory was 335.6MB in the beginning and 316.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-23 23:52:40,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.43ms. Allocated memory is still 360.7MB. Free memory was 316.2MB in the beginning and 314.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:52:40,917 INFO L158 Benchmark]: Boogie Preprocessor took 35.46ms. Allocated memory is still 360.7MB. Free memory was 314.2MB in the beginning and 312.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:52:40,918 INFO L158 Benchmark]: RCFGBuilder took 411.80ms. Allocated memory is still 360.7MB. Free memory was 312.8MB in the beginning and 299.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-23 23:52:40,918 INFO L158 Benchmark]: TraceAbstraction took 3830.84ms. Allocated memory was 360.7MB in the beginning and 530.6MB in the end (delta: 169.9MB). Free memory was 298.9MB in the beginning and 495.3MB in the end (delta: -196.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:52:40,920 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 360.7MB. Free memory was 338.7MB in the beginning and 338.6MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 495.73ms. Allocated memory is still 360.7MB. Free memory was 335.6MB in the beginning and 316.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.43ms. Allocated memory is still 360.7MB. Free memory was 316.2MB in the beginning and 314.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.46ms. Allocated memory is still 360.7MB. Free memory was 314.2MB in the beginning and 312.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 411.80ms. Allocated memory is still 360.7MB. Free memory was 312.8MB in the beginning and 299.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3830.84ms. Allocated memory was 360.7MB in the beginning and 530.6MB in the end (delta: 169.9MB). Free memory was 298.9MB in the beginning and 495.3MB in the end (delta: -196.4MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 64 PlacesBefore, 16 PlacesAfterwards, 60 TransitionsBefore, 12 TransitionsAfterwards, 286 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 710 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 300, independent: 200, independent conditional: 0, independent unconditional: 200, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 145, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 300, independent: 72, independent conditional: 0, independent unconditional: 72, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 145, unknown conditional: 0, unknown unconditional: 145] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 85 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 0.5s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-23 23:52:40,938 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...