/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/pthread-wmm/safe033_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:11:53,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:11:53,674 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 23:11:53,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:11:53,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:11:53,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:11:53,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:11:53,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:11:53,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:11:53,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:11:53,705 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:11:53,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:11:53,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:11:53,706 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:11:53,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:11:53,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:11:53,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:11:53,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:11:53,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:11:53,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:11:53,709 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:11:53,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:11:53,713 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:11:53,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:11:53,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:11:53,716 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:11:53,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:11:53,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:11:53,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:11:53,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:11:53,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:11:53,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:11:53,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:11:53,718 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:11:53,718 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:11:53,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:11:54,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:11:54,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:11:54,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:11:54,082 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:11:54,082 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:11:54,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-08-23 23:11:55,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:11:55,609 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:11:55,609 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-08-23 23:11:55,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4523d44ac/e2a1657f953d42be9c9b870604c1f8bb/FLAG63454b9a4 [2023-08-23 23:11:55,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4523d44ac/e2a1657f953d42be9c9b870604c1f8bb [2023-08-23 23:11:55,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:11:55,644 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:11:55,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:11:55,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:11:55,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:11:55,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:11:55" (1/1) ... [2023-08-23 23:11:55,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd35576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:55, skipping insertion in model container [2023-08-23 23:11:55,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:11:55" (1/1) ... [2023-08-23 23:11:55,704 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:11:55,876 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] [2023-08-23 23:11:56,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:11:56,050 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:11:56,061 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] [2023-08-23 23:11:56,079 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:11:56,080 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:11:56,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:11:56,132 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:11:56,132 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:11:56,139 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:11:56,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56 WrapperNode [2023-08-23 23:11:56,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:11:56,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:11:56,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:11:56,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:11:56,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,190 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-08-23 23:11:56,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:11:56,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:11:56,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:11:56,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:11:56,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:11:56,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:11:56,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:11:56,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:11:56,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (1/1) ... [2023-08-23 23:11:56,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:11:56,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:11:56,258 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 23:11:56,283 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 23:11:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:11:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:11:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:11:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:11:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:11:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:11:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:11:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:11:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:11:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:11:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:11:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:11:56,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:11:56,301 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 23:11:56,433 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:11:56,436 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:11:56,560 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:11:56,566 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:11:56,566 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:11:56,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:11:56 BoogieIcfgContainer [2023-08-23 23:11:56,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:11:56,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:11:56,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:11:56,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:11:56,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:11:55" (1/3) ... [2023-08-23 23:11:56,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fe28c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:11:56, skipping insertion in model container [2023-08-23 23:11:56,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:11:56" (2/3) ... [2023-08-23 23:11:56,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fe28c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:11:56, skipping insertion in model container [2023-08-23 23:11:56,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:11:56" (3/3) ... [2023-08-23 23:11:56,575 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2023-08-23 23:11:56,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:11:56,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:11:56,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:11:56,647 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:11:56,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2023-08-23 23:11:56,712 INFO L124 PetriNetUnfolderBase]: 2/65 cut-off events. [2023-08-23 23:11:56,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:11:56,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-23 23:11:56,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2023-08-23 23:11:56,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2023-08-23 23:11:56,726 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:11:56,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 55 transitions, 116 flow [2023-08-23 23:11:56,735 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 116 flow [2023-08-23 23:11:56,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 116 flow [2023-08-23 23:11:56,751 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2023-08-23 23:11:56,751 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:11:56,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-23 23:11:56,753 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-08-23 23:11:58,379 INFO L134 LiptonReduction]: Checked pairs total: 1039 [2023-08-23 23:11:58,380 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-08-23 23:11:58,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:11:58,402 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;@6b426bbd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:11:58,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-23 23:11:58,408 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:11:58,408 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-23 23:11:58,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:11:58,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:58,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-23 23:11:58,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:11:58,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1655653943, now seen corresponding path program 1 times [2023-08-23 23:11:58,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:58,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183472164] [2023-08-23 23:11:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:58,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:58,849 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 23:11:58,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:58,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183472164] [2023-08-23 23:11:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183472164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:58,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:58,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:11:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36941897] [2023-08-23 23:11:58,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:58,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:11:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:58,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:11:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:11:58,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 116 [2023-08-23 23:11:58,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 23:11:58,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:58,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 116 [2023-08-23 23:11:58,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:58,926 INFO L124 PetriNetUnfolderBase]: 65/136 cut-off events. [2023-08-23 23:11:58,926 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-23 23:11:58,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 136 events. 65/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 497 event pairs, 17 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 276. Up to 93 conditions per place. [2023-08-23 23:11:58,929 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 16 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2023-08-23 23:11:58,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 89 flow [2023-08-23 23:11:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:11:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:11:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-08-23 23:11:58,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2023-08-23 23:11:58,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-08-23 23:11:58,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-08-23 23:11:58,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:58,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-08-23 23:11:58,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 23:11:58,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:11:58,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:11:58,951 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 191 transitions. [2023-08-23 23:11:58,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 89 flow [2023-08-23 23:11:58,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:11:58,954 INFO L231 Difference]: Finished difference. Result has 21 places, 14 transitions, 54 flow [2023-08-23 23:11:58,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2023-08-23 23:11:58,958 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-08-23 23:11:58,959 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 54 flow [2023-08-23 23:11:58,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 23:11:58,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:58,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:58,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:11:58,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:11:58,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash 214334654, now seen corresponding path program 1 times [2023-08-23 23:11:58,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:58,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396534812] [2023-08-23 23:11:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:58,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:59,098 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 23:11:59,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396534812] [2023-08-23 23:11:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396534812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:59,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:59,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:11:59,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597586238] [2023-08-23 23:11:59,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:59,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:11:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:11:59,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:11:59,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-08-23 23:11:59,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 23:11:59,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:59,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-08-23 23:11:59,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:59,137 INFO L124 PetriNetUnfolderBase]: 20/64 cut-off events. [2023-08-23 23:11:59,137 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-23 23:11:59,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 64 events. 20/64 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 189 event pairs, 7 based on Foata normal form. 5/66 useless extension candidates. Maximal degree in co-relation 154. Up to 43 conditions per place. [2023-08-23 23:11:59,138 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 13 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2023-08-23 23:11:59,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 104 flow [2023-08-23 23:11:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:11:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:11:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-08-23 23:11:59,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2023-08-23 23:11:59,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-08-23 23:11:59,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-08-23 23:11:59,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:59,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-08-23 23:11:59,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 23:11:59,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:11:59,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:11:59,144 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 54 flow. Second operand 3 states and 191 transitions. [2023-08-23 23:11:59,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 104 flow [2023-08-23 23:11:59,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:11:59,145 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 65 flow [2023-08-23 23:11:59,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-23 23:11:59,146 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-23 23:11:59,146 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 65 flow [2023-08-23 23:11:59,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 23:11:59,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:59,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:59,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:11:59,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:11:59,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash 280240383, now seen corresponding path program 1 times [2023-08-23 23:11:59,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:59,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396953958] [2023-08-23 23:11:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:59,247 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 23:11:59,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:59,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396953958] [2023-08-23 23:11:59,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396953958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:59,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:11:59,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016199878] [2023-08-23 23:11:59,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:59,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:59,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:59,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:59,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:59,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-08-23 23:11:59,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 23:11:59,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:59,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-08-23 23:11:59,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:59,278 INFO L124 PetriNetUnfolderBase]: 10/40 cut-off events. [2023-08-23 23:11:59,279 INFO L125 PetriNetUnfolderBase]: For 15/17 co-relation queries the response was YES. [2023-08-23 23:11:59,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 40 events. 10/40 cut-off events. For 15/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 3 based on Foata normal form. 9/47 useless extension candidates. Maximal degree in co-relation 113. Up to 16 conditions per place. [2023-08-23 23:11:59,279 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 8 selfloop transitions, 5 changer transitions 3/20 dead transitions. [2023-08-23 23:11:59,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 109 flow [2023-08-23 23:11:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:11:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:11:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-23 23:11:59,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366379310344828 [2023-08-23 23:11:59,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-23 23:11:59,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-23 23:11:59,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:59,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-23 23:11:59,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 23:11:59,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 23:11:59,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 23:11:59,285 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 65 flow. Second operand 4 states and 249 transitions. [2023-08-23 23:11:59,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 109 flow [2023-08-23 23:11:59,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:11:59,286 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 78 flow [2023-08-23 23:11:59,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-23 23:11:59,287 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2023-08-23 23:11:59,287 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 78 flow [2023-08-23 23:11:59,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 23:11:59,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:11:59,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:11:59,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:11:59,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:11:59,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:11:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1912696489, now seen corresponding path program 1 times [2023-08-23 23:11:59,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:11:59,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991619869] [2023-08-23 23:11:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:11:59,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:11:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:11:59,383 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 23:11:59,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:11:59,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991619869] [2023-08-23 23:11:59,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991619869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:11:59,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:11:59,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:11:59,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018004135] [2023-08-23 23:11:59,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:11:59,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:11:59,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:11:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:11:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:11:59,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 116 [2023-08-23 23:11:59,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 23:11:59,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:11:59,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 116 [2023-08-23 23:11:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:11:59,436 INFO L124 PetriNetUnfolderBase]: 17/52 cut-off events. [2023-08-23 23:11:59,436 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-23 23:11:59,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 52 events. 17/52 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 127 event pairs, 1 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 168. Up to 25 conditions per place. [2023-08-23 23:11:59,437 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-23 23:11:59,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 163 flow [2023-08-23 23:11:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:11:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:11:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 292 transitions. [2023-08-23 23:11:59,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2023-08-23 23:11:59,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 292 transitions. [2023-08-23 23:11:59,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 292 transitions. [2023-08-23 23:11:59,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:11:59,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 292 transitions. [2023-08-23 23:11:59,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 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 23:11:59,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 23:11:59,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 23:11:59,443 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 78 flow. Second operand 5 states and 292 transitions. [2023-08-23 23:11:59,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 163 flow [2023-08-23 23:11:59,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 150 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-23 23:11:59,446 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-23 23:11:59,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-23 23:11:59,448 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-08-23 23:11:59,448 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-23 23:11:59,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 23:11:59,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-23 23:11:59,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-23 23:11:59,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-23 23:11:59,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:11:59,453 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-23 23:11:59,459 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:11:59,459 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:11:59,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:11:59 BasicIcfg [2023-08-23 23:11:59,466 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:11:59,467 INFO L158 Benchmark]: Toolchain (without parser) took 3822.76ms. Allocated memory is still 394.3MB. Free memory was 348.3MB in the beginning and 288.9MB in the end (delta: 59.3MB). Peak memory consumption was 60.4MB. Max. memory is 16.0GB. [2023-08-23 23:11:59,468 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 394.3MB. Free memory was 372.3MB in the beginning and 372.1MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:11:59,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.65ms. Allocated memory is still 394.3MB. Free memory was 348.3MB in the beginning and 328.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-23 23:11:59,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.08ms. Allocated memory is still 394.3MB. Free memory was 328.3MB in the beginning and 326.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:11:59,469 INFO L158 Benchmark]: Boogie Preprocessor took 38.56ms. Allocated memory is still 394.3MB. Free memory was 326.2MB in the beginning and 325.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:11:59,471 INFO L158 Benchmark]: RCFGBuilder took 337.86ms. Allocated memory is still 394.3MB. Free memory was 325.2MB in the beginning and 310.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-23 23:11:59,471 INFO L158 Benchmark]: TraceAbstraction took 2896.49ms. Allocated memory is still 394.3MB. Free memory was 309.5MB in the beginning and 288.9MB in the end (delta: 20.5MB). Peak memory consumption was 22.6MB. Max. memory is 16.0GB. [2023-08-23 23:11:59,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 394.3MB. Free memory was 372.3MB in the beginning and 372.1MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 498.65ms. Allocated memory is still 394.3MB. Free memory was 348.3MB in the beginning and 328.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.08ms. Allocated memory is still 394.3MB. Free memory was 328.3MB in the beginning and 326.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.56ms. Allocated memory is still 394.3MB. Free memory was 326.2MB in the beginning and 325.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 337.86ms. Allocated memory is still 394.3MB. Free memory was 325.2MB in the beginning and 310.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2896.49ms. Allocated memory is still 394.3MB. Free memory was 309.5MB in the beginning and 288.9MB in the end (delta: 20.5MB). Peak memory consumption was 22.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 61 PlacesBefore, 19 PlacesAfterwards, 55 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 1039 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 585, independent: 520, independent conditional: 0, independent unconditional: 520, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 312, independent: 290, independent conditional: 0, independent unconditional: 290, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 585, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 312, unknown conditional: 0, unknown unconditional: 312] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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 5 procedures, 82 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 5 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=3, InterpolantAutomatonStates: 15, 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, 0.6s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 23:11:59,493 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...