/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_47-refine-protected2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 12:33:14,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 12:33:14,246 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 12:33:14,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 12:33:14,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 12:33:14,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 12:33:14,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 12:33:14,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 12:33:14,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 12:33:14,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 12:33:14,277 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 12:33:14,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 12:33:14,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 12:33:14,278 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 12:33:14,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 12:33:14,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 12:33:14,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 12:33:14,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 12:33:14,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 12:33:14,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 12:33:14,279 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 12:33:14,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 12:33:14,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 12:33:14,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 12:33:14,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 12:33:14,280 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 12:33:14,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 12:33:14,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:33:14,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 12:33:14,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 12:33:14,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 12:33:14,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 12:33:14,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 12:33:14,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 12:33:14,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 12:33:14,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 12:33:14,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 12:33:14,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 12:33:14,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 12:33:14,534 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 12:33:14,535 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 12:33:14,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2023-08-24 12:33:15,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 12:33:15,712 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 12:33:15,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2023-08-24 12:33:15,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f3461dc/7a1166675b11442cba8f24a9f1255211/FLAG881cde2d4 [2023-08-24 12:33:15,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f3461dc/7a1166675b11442cba8f24a9f1255211 [2023-08-24 12:33:15,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 12:33:15,739 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 12:33:15,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 12:33:15,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 12:33:15,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 12:33:15,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:33:15" (1/1) ... [2023-08-24 12:33:15,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e28b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:15, skipping insertion in model container [2023-08-24 12:33:15,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:33:15" (1/1) ... [2023-08-24 12:33:15,772 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 12:33:15,868 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i[1094,1107] [2023-08-24 12:33:15,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:33:16,005 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 12:33:16,014 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i[1094,1107] [2023-08-24 12:33:16,033 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-24 12:33:16,034 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-24 12:33:16,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:33:16,075 INFO L206 MainTranslator]: Completed translation [2023-08-24 12:33:16,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16 WrapperNode [2023-08-24 12:33:16,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 12:33:16,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 12:33:16,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 12:33:16,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 12:33:16,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,130 INFO L138 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-08-24 12:33:16,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 12:33:16,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 12:33:16,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 12:33:16,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 12:33:16,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 12:33:16,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 12:33:16,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 12:33:16,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 12:33:16,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (1/1) ... [2023-08-24 12:33:16,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:33:16,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 12:33:16,198 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 12:33:16,220 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 12:33:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 12:33:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 12:33:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 12:33:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 12:33:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 12:33:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 12:33:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 12:33:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 12:33:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 12:33:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 12:33:16,242 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 12:33:16,319 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 12:33:16,321 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 12:33:16,418 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 12:33:16,423 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 12:33:16,423 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 12:33:16,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:33:16 BoogieIcfgContainer [2023-08-24 12:33:16,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 12:33:16,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 12:33:16,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 12:33:16,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 12:33:16,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:33:15" (1/3) ... [2023-08-24 12:33:16,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ef4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:33:16, skipping insertion in model container [2023-08-24 12:33:16,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:33:16" (2/3) ... [2023-08-24 12:33:16,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ef4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:33:16, skipping insertion in model container [2023-08-24 12:33:16,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:33:16" (3/3) ... [2023-08-24 12:33:16,430 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_47-refine-protected2_true.i [2023-08-24 12:33:16,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 12:33:16,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 12:33:16,443 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 12:33:16,469 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 12:33:16,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 60 transitions, 125 flow [2023-08-24 12:33:16,514 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2023-08-24 12:33:16,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:16,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 57 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-24 12:33:16,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 60 transitions, 125 flow [2023-08-24 12:33:16,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 93 flow [2023-08-24 12:33:16,522 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 12:33:16,528 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 45 transitions, 93 flow [2023-08-24 12:33:16,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 45 transitions, 93 flow [2023-08-24 12:33:16,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 93 flow [2023-08-24 12:33:16,539 INFO L124 PetriNetUnfolderBase]: 0/45 cut-off events. [2023-08-24 12:33:16,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:16,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-24 12:33:16,540 INFO L119 LiptonReduction]: Number of co-enabled transitions 224 [2023-08-24 12:33:17,856 INFO L134 LiptonReduction]: Checked pairs total: 458 [2023-08-24 12:33:17,856 INFO L136 LiptonReduction]: Total number of compositions: 35 [2023-08-24 12:33:17,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 12:33:17,870 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;@4270ce85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 12:33:17,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 12:33:17,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 12:33:17,872 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-24 12:33:17,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:17,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:17,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 12:33:17,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:33:17,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash 196486945, now seen corresponding path program 1 times [2023-08-24 12:33:17,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:17,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655630864] [2023-08-24 12:33:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:17,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:18,035 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 12:33:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655630864] [2023-08-24 12:33:18,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655630864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:18,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:18,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:33:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889932654] [2023-08-24 12:33:18,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:18,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:33:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:18,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:33:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:33:18,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 95 [2023-08-24 12:33:18,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 23 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:18,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 95 [2023-08-24 12:33:18,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:18,093 INFO L124 PetriNetUnfolderBase]: 8/29 cut-off events. [2023-08-24 12:33:18,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:18,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 8/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 62 event pairs, 4 based on Foata normal form. 4/31 useless extension candidates. Maximal degree in co-relation 54. Up to 15 conditions per place. [2023-08-24 12:33:18,095 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 9 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2023-08-24 12:33:18,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 13 transitions, 55 flow [2023-08-24 12:33:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:33:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:33:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2023-08-24 12:33:18,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684210526315789 [2023-08-24 12:33:18,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2023-08-24 12:33:18,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2023-08-24 12:33:18,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:18,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2023-08-24 12:33:18,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,119 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 23 flow. Second operand 3 states and 162 transitions. [2023-08-24 12:33:18,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 13 transitions, 55 flow [2023-08-24 12:33:18,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:33:18,122 INFO L231 Difference]: Finished difference. Result has 17 places, 10 transitions, 40 flow [2023-08-24 12:33:18,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=17, PETRI_TRANSITIONS=10} [2023-08-24 12:33:18,127 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, 3 predicate places. [2023-08-24 12:33:18,127 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 10 transitions, 40 flow [2023-08-24 12:33:18,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:18,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:33:18,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 12:33:18,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:33:18,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -167911658, now seen corresponding path program 1 times [2023-08-24 12:33:18,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:18,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872727628] [2023-08-24 12:33:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:18,289 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 12:33:18,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:18,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872727628] [2023-08-24 12:33:18,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872727628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:18,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:18,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:33:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770603667] [2023-08-24 12:33:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:33:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:33:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:33:18,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2023-08-24 12:33:18,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 10 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:18,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2023-08-24 12:33:18,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:18,304 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-24 12:33:18,304 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 12:33:18,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 10 events. 0/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 3/13 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-24 12:33:18,304 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 4 selfloop transitions, 3 changer transitions 1/9 dead transitions. [2023-08-24 12:33:18,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 9 transitions, 50 flow [2023-08-24 12:33:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:33:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:33:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-08-24 12:33:18,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2023-08-24 12:33:18,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-08-24 12:33:18,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-08-24 12:33:18,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:18,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-08-24 12:33:18,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,312 INFO L175 Difference]: Start difference. First operand has 17 places, 10 transitions, 40 flow. Second operand 3 states and 144 transitions. [2023-08-24 12:33:18,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 9 transitions, 50 flow [2023-08-24 12:33:18,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:33:18,312 INFO L231 Difference]: Finished difference. Result has 16 places, 8 transitions, 32 flow [2023-08-24 12:33:18,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=8} [2023-08-24 12:33:18,313 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, 2 predicate places. [2023-08-24 12:33:18,313 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 8 transitions, 32 flow [2023-08-24 12:33:18,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:33:18,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:33:18,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 12:33:18,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 12:33:18,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:33:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash -917079396, now seen corresponding path program 1 times [2023-08-24 12:33:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:33:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981790568] [2023-08-24 12:33:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:33:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:33:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:33:18,363 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 12:33:18,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:33:18,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981790568] [2023-08-24 12:33:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981790568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:33:18,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:33:18,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:33:18,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661902481] [2023-08-24 12:33:18,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:33:18,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:33:18,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:33:18,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:33:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:33:18,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 95 [2023-08-24 12:33:18,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 8 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:33:18,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 95 [2023-08-24 12:33:18,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:33:18,377 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-24 12:33:18,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:33:18,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-24 12:33:18,377 INFO L140 encePairwiseOnDemand]: 93/95 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-24 12:33:18,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 8 transitions, 48 flow [2023-08-24 12:33:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:33:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:33:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-08-24 12:33:18,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2023-08-24 12:33:18,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-08-24 12:33:18,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-08-24 12:33:18,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:33:18,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-08-24 12:33:18,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,380 INFO L175 Difference]: Start difference. First operand has 16 places, 8 transitions, 32 flow. Second operand 3 states and 156 transitions. [2023-08-24 12:33:18,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 8 transitions, 48 flow [2023-08-24 12:33:18,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 8 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:33:18,380 INFO L231 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2023-08-24 12:33:18,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2023-08-24 12:33:18,381 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, 0 predicate places. [2023-08-24 12:33:18,381 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2023-08-24 12:33:18,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:33:18,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 12:33:18,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-24 12:33:18,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 12:33:18,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 12:33:18,384 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-24 12:33:18,386 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 12:33:18,386 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 12:33:18,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:33:18 BasicIcfg [2023-08-24 12:33:18,388 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 12:33:18,389 INFO L158 Benchmark]: Toolchain (without parser) took 2649.92ms. Allocated memory was 320.9MB in the beginning and 402.7MB in the end (delta: 81.8MB). Free memory was 296.0MB in the beginning and 315.8MB in the end (delta: -19.8MB). Peak memory consumption was 62.6MB. Max. memory is 16.0GB. [2023-08-24 12:33:18,389 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 320.9MB. Free memory is still 297.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 12:33:18,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.72ms. Allocated memory is still 320.9MB. Free memory was 296.0MB in the beginning and 276.0MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 12:33:18,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.75ms. Allocated memory is still 320.9MB. Free memory was 276.0MB in the beginning and 274.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:33:18,390 INFO L158 Benchmark]: Boogie Preprocessor took 28.76ms. Allocated memory is still 320.9MB. Free memory was 274.0MB in the beginning and 272.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:33:18,391 INFO L158 Benchmark]: RCFGBuilder took 263.69ms. Allocated memory is still 320.9MB. Free memory was 272.9MB in the beginning and 260.9MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 12:33:18,391 INFO L158 Benchmark]: TraceAbstraction took 1962.58ms. Allocated memory was 320.9MB in the beginning and 402.7MB in the end (delta: 81.8MB). Free memory was 259.8MB in the beginning and 315.8MB in the end (delta: -55.9MB). Peak memory consumption was 26.9MB. Max. memory is 16.0GB. [2023-08-24 12:33:18,393 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 320.9MB. Free memory is still 297.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 335.72ms. Allocated memory is still 320.9MB. Free memory was 296.0MB in the beginning and 276.0MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.75ms. Allocated memory is still 320.9MB. Free memory was 276.0MB in the beginning and 274.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.76ms. Allocated memory is still 320.9MB. Free memory was 274.0MB in the beginning and 272.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 263.69ms. Allocated memory is still 320.9MB. Free memory was 272.9MB in the beginning and 260.9MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 1962.58ms. Allocated memory was 320.9MB in the beginning and 402.7MB in the end (delta: 81.8MB). Free memory was 259.8MB in the beginning and 315.8MB in the end (delta: -55.9MB). Peak memory consumption was 26.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 49 PlacesBefore, 14 PlacesAfterwards, 45 TransitionsBefore, 10 TransitionsAfterwards, 224 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 35 TotalNumberOfCompositions, 458 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 317, independent: 242, independent conditional: 0, independent unconditional: 242, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 130, independent: 114, independent conditional: 0, independent unconditional: 114, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 317, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 130, unknown conditional: 0, unknown unconditional: 130] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 67 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=1, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 12:33:18,420 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...