/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy7.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:31:16,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:31:16,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:31:16,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:31:16,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:31:16,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:31:16,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:31:16,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:31:16,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:31:16,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:31:16,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:31:16,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:31:16,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:31:16,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:31:16,658 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:31:16,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:31:16,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:31:16,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:31:16,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:31:16,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:31:16,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:31:16,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:31:16,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:31:16,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:31:16,661 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:31:16,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:31:16,662 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:31:16,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:31:16,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:31:16,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:31:16,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:31:16,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:31:16,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:31:16,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:31:16,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:31:16,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:31:16,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:31:16,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:31:16,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:31:16,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:31:16,665 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:31:16,665 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 03:31:16,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:31:16,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:31:16,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:31:16,890 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:31:16,891 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:31:16,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy7.wvr_bound2.c [2023-08-04 03:31:18,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:31:18,323 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:31:18,323 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy7.wvr_bound2.c [2023-08-04 03:31:18,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ef5157d/704294f29afc4b00b2623eb56561fc4d/FLAG42a918f60 [2023-08-04 03:31:18,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ef5157d/704294f29afc4b00b2623eb56561fc4d [2023-08-04 03:31:18,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:31:18,354 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:31:18,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:31:18,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:31:18,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:31:18,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ded7637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18, skipping insertion in model container [2023-08-04 03:31:18,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,379 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:31:18,531 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy7.wvr_bound2.c[2034,2047] [2023-08-04 03:31:18,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:31:18,540 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:31:18,555 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy7.wvr_bound2.c[2034,2047] [2023-08-04 03:31:18,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:31:18,567 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:31:18,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18 WrapperNode [2023-08-04 03:31:18,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:31:18,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:31:18,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:31:18,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:31:18,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,607 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2023-08-04 03:31:18,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:31:18,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:31:18,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:31:18,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:31:18,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,629 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:31:18,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:31:18,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:31:18,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:31:18,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (1/1) ... [2023-08-04 03:31:18,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:31:18,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:18,657 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) [2023-08-04 03:31:18,671 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 [2023-08-04 03:31:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:31:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 03:31:18,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 03:31:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 03:31:18,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 03:31:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:31:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:31:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:31:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:31:18,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:31:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:31:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:31:18,699 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 03:31:18,770 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:31:18,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:31:18,934 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:31:18,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:31:18,942 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 03:31:18,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:31:18 BoogieIcfgContainer [2023-08-04 03:31:18,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:31:18,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:31:18,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:31:18,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:31:18,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:31:18" (1/3) ... [2023-08-04 03:31:18,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff444b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:31:18, skipping insertion in model container [2023-08-04 03:31:18,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:31:18" (2/3) ... [2023-08-04 03:31:18,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff444b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:31:18, skipping insertion in model container [2023-08-04 03:31:18,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:31:18" (3/3) ... [2023-08-04 03:31:18,951 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_test-easy7.wvr_bound2.c [2023-08-04 03:31:18,957 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:31:18,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:31:18,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:31:18,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:31:19,026 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 03:31:19,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 119 transitions, 260 flow [2023-08-04 03:31:19,149 INFO L124 PetriNetUnfolderBase]: 27/263 cut-off events. [2023-08-04 03:31:19,149 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-04 03:31:19,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 263 events. 27/263 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 996 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2023-08-04 03:31:19,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 119 transitions, 260 flow [2023-08-04 03:31:19,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 168 flow [2023-08-04 03:31:19,161 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:31:19,170 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 79 transitions, 168 flow [2023-08-04 03:31:19,172 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 79 transitions, 168 flow [2023-08-04 03:31:19,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 79 transitions, 168 flow [2023-08-04 03:31:19,199 INFO L124 PetriNetUnfolderBase]: 3/119 cut-off events. [2023-08-04 03:31:19,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:31:19,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 119 events. 3/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2023-08-04 03:31:19,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-08-04 03:31:21,145 INFO L134 LiptonReduction]: Checked pairs total: 980 [2023-08-04 03:31:21,146 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-04 03:31:21,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:31:21,163 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=true, 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;@9476f43, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:31:21,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 03:31:21,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:31:21,167 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-04 03:31:21,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:31:21,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:21,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 03:31:21,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:21,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:21,173 INFO L85 PathProgramCache]: Analyzing trace with hash 395484666, now seen corresponding path program 1 times [2023-08-04 03:31:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:21,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517897104] [2023-08-04 03:31:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:31:21,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:21,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517897104] [2023-08-04 03:31:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517897104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:21,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:31:21,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:31:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508013147] [2023-08-04 03:31:21,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:21,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:31:21,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 193 [2023-08-04 03:31:21,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:31:21,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:21,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 193 [2023-08-04 03:31:21,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:21,511 INFO L124 PetriNetUnfolderBase]: 9/31 cut-off events. [2023-08-04 03:31:21,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:31:21,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 31 events. 9/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 2 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 56. Up to 24 conditions per place. [2023-08-04 03:31:21,513 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 9 selfloop transitions, 2 changer transitions 0/13 dead transitions. [2023-08-04 03:31:21,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 58 flow [2023-08-04 03:31:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-04 03:31:21,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492227979274611 [2023-08-04 03:31:21,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-04 03:31:21,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-04 03:31:21,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:21,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-04 03:31:21,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2023-08-04 03:31:21,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2023-08-04 03:31:21,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2023-08-04 03:31:21,541 INFO L175 Difference]: Start difference. First operand has 16 places, 11 transitions, 32 flow. Second operand 3 states and 318 transitions. [2023-08-04 03:31:21,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 58 flow [2023-08-04 03:31:21,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:31:21,544 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 40 flow [2023-08-04 03:31:21,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2023-08-04 03:31:21,549 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-08-04 03:31:21,549 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 40 flow [2023-08-04 03:31:21,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:31:21,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:21,550 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 03:31:21,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:31:21,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:21,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -619399021, now seen corresponding path program 1 times [2023-08-04 03:31:21,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:21,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825034091] [2023-08-04 03:31:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:21,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:31:21,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:31:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:31:21,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:31:21,618 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:31:21,620 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 03:31:21,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 03:31:21,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 03:31:21,626 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 03:31:21,630 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-04 03:31:21,631 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:31:21,631 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:31:21,659 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-04 03:31:21,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 153 transitions, 354 flow [2023-08-04 03:31:21,797 INFO L124 PetriNetUnfolderBase]: 118/858 cut-off events. [2023-08-04 03:31:21,797 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-04 03:31:21,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 858 events. 118/858 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4775 event pairs, 1 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 507. Up to 32 conditions per place. [2023-08-04 03:31:21,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 153 transitions, 354 flow [2023-08-04 03:31:21,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 109 transitions, 242 flow [2023-08-04 03:31:21,809 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:31:21,809 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 109 transitions, 242 flow [2023-08-04 03:31:21,810 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 109 transitions, 242 flow [2023-08-04 03:31:21,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 109 transitions, 242 flow [2023-08-04 03:31:21,840 INFO L124 PetriNetUnfolderBase]: 4/247 cut-off events. [2023-08-04 03:31:21,840 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 03:31:21,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 247 events. 4/247 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 793 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 185. Up to 9 conditions per place. [2023-08-04 03:31:21,847 INFO L119 LiptonReduction]: Number of co-enabled transitions 4368 [2023-08-04 03:31:23,430 INFO L134 LiptonReduction]: Checked pairs total: 15798 [2023-08-04 03:31:23,430 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-04 03:31:23,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:31:23,433 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=true, 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;@9476f43, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:31:23,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 03:31:23,437 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:31:23,437 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2023-08-04 03:31:23,437 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 03:31:23,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:23,437 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-04 03:31:23,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:23,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1525180312, now seen corresponding path program 1 times [2023-08-04 03:31:23,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:23,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894088998] [2023-08-04 03:31:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:23,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 03:31:23,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894088998] [2023-08-04 03:31:23,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894088998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:23,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:31:23,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:31:23,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255203359] [2023-08-04 03:31:23,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:23,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:23,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:23,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:23,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:31:23,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 223 [2023-08-04 03:31:23,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-04 03:31:23,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:23,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 223 [2023-08-04 03:31:23,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:24,087 INFO L124 PetriNetUnfolderBase]: 4712/7861 cut-off events. [2023-08-04 03:31:24,087 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2023-08-04 03:31:24,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15244 conditions, 7861 events. 4712/7861 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 56653 event pairs, 3944 based on Foata normal form. 0/7684 useless extension candidates. Maximal degree in co-relation 4775. Up to 6628 conditions per place. [2023-08-04 03:31:24,149 INFO L140 encePairwiseOnDemand]: 220/223 looper letters, 29 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-04 03:31:24,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 188 flow [2023-08-04 03:31:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-04 03:31:24,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307922272047832 [2023-08-04 03:31:24,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-04 03:31:24,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-04 03:31:24,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:24,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-04 03:31:24,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-04 03:31:24,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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) [2023-08-04 03:31:24,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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) [2023-08-04 03:31:24,158 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 114 flow. Second operand 3 states and 422 transitions. [2023-08-04 03:31:24,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 188 flow [2023-08-04 03:31:24,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 184 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 03:31:24,162 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 122 flow [2023-08-04 03:31:24,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-08-04 03:31:24,162 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-04 03:31:24,163 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 122 flow [2023-08-04 03:31:24,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-04 03:31:24,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:24,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 03:31:24,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:31:24,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:24,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -339938636, now seen corresponding path program 1 times [2023-08-04 03:31:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611292754] [2023-08-04 03:31:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:31:24,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611292754] [2023-08-04 03:31:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611292754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706578074] [2023-08-04 03:31:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:24,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:24,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:24,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:24,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 03:31:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:24,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:31:24,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:31:24,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706578074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:24,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 03:31:24,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130501842] [2023-08-04 03:31:24,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:24,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:24,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:24,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:31:24,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 223 [2023-08-04 03:31:24,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 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) [2023-08-04 03:31:24,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:24,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 223 [2023-08-04 03:31:24,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:25,044 INFO L124 PetriNetUnfolderBase]: 4672/7759 cut-off events. [2023-08-04 03:31:25,044 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2023-08-04 03:31:25,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15049 conditions, 7759 events. 4672/7759 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 55622 event pairs, 3140 based on Foata normal form. 25/7614 useless extension candidates. Maximal degree in co-relation 3153. Up to 6499 conditions per place. [2023-08-04 03:31:25,109 INFO L140 encePairwiseOnDemand]: 219/223 looper letters, 36 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-08-04 03:31:25,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 228 flow [2023-08-04 03:31:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:31:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:31:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 686 transitions. [2023-08-04 03:31:25,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6152466367713004 [2023-08-04 03:31:25,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 686 transitions. [2023-08-04 03:31:25,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 686 transitions. [2023-08-04 03:31:25,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:25,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 686 transitions. [2023-08-04 03:31:25,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 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) [2023-08-04 03:31:25,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 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) [2023-08-04 03:31:25,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 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) [2023-08-04 03:31:25,119 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 122 flow. Second operand 5 states and 686 transitions. [2023-08-04 03:31:25,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 228 flow [2023-08-04 03:31:25,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:31:25,122 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 136 flow [2023-08-04 03:31:25,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-08-04 03:31:25,124 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-08-04 03:31:25,125 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 136 flow [2023-08-04 03:31:25,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 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) [2023-08-04 03:31:25,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:25,125 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:25,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 03:31:25,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:25,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:25,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1710842456, now seen corresponding path program 1 times [2023-08-04 03:31:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:25,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788500565] [2023-08-04 03:31:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:25,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 03:31:25,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788500565] [2023-08-04 03:31:25,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788500565] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776106371] [2023-08-04 03:31:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:25,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:25,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:25,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:25,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 03:31:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:25,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:25,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 03:31:25,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 03:31:25,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776106371] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:25,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:25,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:31:25,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466822833] [2023-08-04 03:31:25,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:25,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:25,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:25,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 223 [2023-08-04 03:31:25,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 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) [2023-08-04 03:31:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:25,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 223 [2023-08-04 03:31:25,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:26,079 INFO L124 PetriNetUnfolderBase]: 4108/6771 cut-off events. [2023-08-04 03:31:26,079 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2023-08-04 03:31:26,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13155 conditions, 6771 events. 4108/6771 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 46990 event pairs, 2832 based on Foata normal form. 5/6670 useless extension candidates. Maximal degree in co-relation 4838. Up to 5631 conditions per place. [2023-08-04 03:31:26,132 INFO L140 encePairwiseOnDemand]: 220/223 looper letters, 36 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-04 03:31:26,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 234 flow [2023-08-04 03:31:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-04 03:31:26,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6233183856502242 [2023-08-04 03:31:26,135 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-04 03:31:26,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-04 03:31:26,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:26,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-04 03:31:26,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-08-04 03:31:26,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 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) [2023-08-04 03:31:26,139 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 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) [2023-08-04 03:31:26,139 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 136 flow. Second operand 4 states and 556 transitions. [2023-08-04 03:31:26,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 234 flow [2023-08-04 03:31:26,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 229 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 03:31:26,141 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 129 flow [2023-08-04 03:31:26,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2023-08-04 03:31:26,142 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-08-04 03:31:26,142 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 129 flow [2023-08-04 03:31:26,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 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) [2023-08-04 03:31:26,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:26,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:26,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 03:31:26,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:26,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:31:26,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -881610791, now seen corresponding path program 1 times [2023-08-04 03:31:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:26,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322660577] [2023-08-04 03:31:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:26,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:31:26,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:26,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322660577] [2023-08-04 03:31:26,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322660577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:26,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:31:26,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 03:31:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712767889] [2023-08-04 03:31:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:26,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 03:31:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 03:31:26,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 03:31:26,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 223 [2023-08-04 03:31:26,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 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) [2023-08-04 03:31:26,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:26,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 223 [2023-08-04 03:31:26,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:26,763 INFO L124 PetriNetUnfolderBase]: 2108/3735 cut-off events. [2023-08-04 03:31:26,764 INFO L125 PetriNetUnfolderBase]: For 506/506 co-relation queries the response was YES. [2023-08-04 03:31:26,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 3735 events. 2108/3735 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 25293 event pairs, 443 based on Foata normal form. 625/4303 useless extension candidates. Maximal degree in co-relation 5756. Up to 2550 conditions per place. [2023-08-04 03:31:26,772 INFO L140 encePairwiseOnDemand]: 221/223 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2023-08-04 03:31:26,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 257 flow [2023-08-04 03:31:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-08-04 03:31:26,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6345291479820628 [2023-08-04 03:31:26,774 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-08-04 03:31:26,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-08-04 03:31:26,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:26,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-08-04 03:31:26,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 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) [2023-08-04 03:31:26,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 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) [2023-08-04 03:31:26,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 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) [2023-08-04 03:31:26,779 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 129 flow. Second operand 4 states and 566 transitions. [2023-08-04 03:31:26,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 257 flow [2023-08-04 03:31:26,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 250 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 03:31:26,786 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-08-04 03:31:26,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-08-04 03:31:26,788 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-04 03:31:26,788 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-08-04 03:31:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 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) [2023-08-04 03:31:26,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 03:31:26,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 03:31:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 03:31:26,789 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 03:31:26,790 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (1/2) [2023-08-04 03:31:26,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 153 transitions, 354 flow [2023-08-04 03:31:26,861 INFO L124 PetriNetUnfolderBase]: 118/858 cut-off events. [2023-08-04 03:31:26,861 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-04 03:31:26,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 858 events. 118/858 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4775 event pairs, 1 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 507. Up to 32 conditions per place. [2023-08-04 03:31:26,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 153 transitions, 354 flow [2023-08-04 03:31:26,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 143 transitions, 326 flow [2023-08-04 03:31:26,866 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:31:26,867 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 143 transitions, 326 flow [2023-08-04 03:31:26,867 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 143 transitions, 326 flow [2023-08-04 03:31:26,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 143 transitions, 326 flow [2023-08-04 03:31:26,918 INFO L124 PetriNetUnfolderBase]: 118/726 cut-off events. [2023-08-04 03:31:26,918 INFO L125 PetriNetUnfolderBase]: For 68/76 co-relation queries the response was YES. [2023-08-04 03:31:26,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 726 events. 118/726 cut-off events. For 68/76 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3828 event pairs, 1 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 440. Up to 32 conditions per place. [2023-08-04 03:31:26,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 8008 [2023-08-04 03:31:28,626 INFO L134 LiptonReduction]: Checked pairs total: 30986 [2023-08-04 03:31:28,626 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-04 03:31:28,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:31:28,628 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=true, 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;@9476f43, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:31:28,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:31:28,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:31:28,629 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 03:31:28,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:31:28,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:28,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 03:31:28,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:28,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 727856770, now seen corresponding path program 1 times [2023-08-04 03:31:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364615064] [2023-08-04 03:31:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:31:28,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:28,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364615064] [2023-08-04 03:31:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364615064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:31:28,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:31:28,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218487058] [2023-08-04 03:31:28,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:28,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:28,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:31:28,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 247 [2023-08-04 03:31:28,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-04 03:31:28,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:28,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 247 [2023-08-04 03:31:28,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:31,652 INFO L124 PetriNetUnfolderBase]: 28950/44665 cut-off events. [2023-08-04 03:31:31,652 INFO L125 PetriNetUnfolderBase]: For 3511/3511 co-relation queries the response was YES. [2023-08-04 03:31:31,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86550 conditions, 44665 events. 28950/44665 cut-off events. For 3511/3511 co-relation queries the response was YES. Maximal size of possible extension queue 1601. Compared 359769 event pairs, 23954 based on Foata normal form. 0/40815 useless extension candidates. Maximal degree in co-relation 32465. Up to 39618 conditions per place. [2023-08-04 03:31:31,893 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 45 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-04 03:31:31,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 268 flow [2023-08-04 03:31:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-04 03:31:31,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910931174089069 [2023-08-04 03:31:31,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-04 03:31:31,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-04 03:31:31,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:31,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-04 03:31:31,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2023-08-04 03:31:31,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-08-04 03:31:31,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-08-04 03:31:31,899 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 162 flow. Second operand 3 states and 438 transitions. [2023-08-04 03:31:31,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 268 flow [2023-08-04 03:31:31,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:31:31,932 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 168 flow [2023-08-04 03:31:31,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-08-04 03:31:31,934 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2023-08-04 03:31:31,934 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 168 flow [2023-08-04 03:31:31,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-04 03:31:31,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:31,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:31,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 03:31:31,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:31,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1138599588, now seen corresponding path program 1 times [2023-08-04 03:31:31,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:31,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870574091] [2023-08-04 03:31:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:31:31,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:31,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870574091] [2023-08-04 03:31:31,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870574091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:31,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113365253] [2023-08-04 03:31:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:31,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:31,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:31,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:32,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 03:31:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:32,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:31:32,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:31:32,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113365253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 03:31:32,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775040953] [2023-08-04 03:31:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:32,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:32,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 247 [2023-08-04 03:31:32,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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) [2023-08-04 03:31:32,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:32,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 247 [2023-08-04 03:31:32,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:34,635 INFO L124 PetriNetUnfolderBase]: 28920/44590 cut-off events. [2023-08-04 03:31:34,635 INFO L125 PetriNetUnfolderBase]: For 2351/2351 co-relation queries the response was YES. [2023-08-04 03:31:34,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86358 conditions, 44590 events. 28920/44590 cut-off events. For 2351/2351 co-relation queries the response was YES. Maximal size of possible extension queue 1594. Compared 357977 event pairs, 25454 based on Foata normal form. 0/40745 useless extension candidates. Maximal degree in co-relation 70520. Up to 39077 conditions per place. [2023-08-04 03:31:34,856 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-04 03:31:34,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 308 flow [2023-08-04 03:31:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 03:31:34,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601889338731444 [2023-08-04 03:31:34,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 03:31:34,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 03:31:34,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:34,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 03:31:34,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2023-08-04 03:31:34,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-08-04 03:31:34,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-08-04 03:31:34,861 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 168 flow. Second operand 3 states and 446 transitions. [2023-08-04 03:31:34,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 308 flow [2023-08-04 03:31:34,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:34,866 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 178 flow [2023-08-04 03:31:34,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-04 03:31:34,869 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2023-08-04 03:31:34,869 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 178 flow [2023-08-04 03:31:34,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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) [2023-08-04 03:31:34,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:34,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:34,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 03:31:35,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:35,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:35,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:35,075 INFO L85 PathProgramCache]: Analyzing trace with hash -617407391, now seen corresponding path program 1 times [2023-08-04 03:31:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:35,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107941249] [2023-08-04 03:31:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:35,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:31:35,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107941249] [2023-08-04 03:31:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107941249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382218028] [2023-08-04 03:31:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:35,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:35,785 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:35,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 03:31:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:36,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:31:36,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:31:36,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:36,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382218028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:36,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:36,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 03:31:36,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041813803] [2023-08-04 03:31:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:36,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:36,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:36,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 247 [2023-08-04 03:31:36,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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) [2023-08-04 03:31:36,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:36,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 247 [2023-08-04 03:31:36,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:38,402 INFO L124 PetriNetUnfolderBase]: 22593/34338 cut-off events. [2023-08-04 03:31:38,402 INFO L125 PetriNetUnfolderBase]: For 2855/2855 co-relation queries the response was YES. [2023-08-04 03:31:38,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69725 conditions, 34338 events. 22593/34338 cut-off events. For 2855/2855 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 263868 event pairs, 15188 based on Foata normal form. 0/32540 useless extension candidates. Maximal degree in co-relation 41846. Up to 22430 conditions per place. [2023-08-04 03:31:38,704 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 63 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-04 03:31:38,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 362 flow [2023-08-04 03:31:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-04 03:31:38,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6126855600539811 [2023-08-04 03:31:38,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-04 03:31:38,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-04 03:31:38,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:38,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-04 03:31:38,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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) [2023-08-04 03:31:38,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-08-04 03:31:38,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-08-04 03:31:38,711 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 178 flow. Second operand 3 states and 454 transitions. [2023-08-04 03:31:38,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 362 flow [2023-08-04 03:31:38,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:38,719 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 188 flow [2023-08-04 03:31:38,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2023-08-04 03:31:38,720 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2023-08-04 03:31:38,721 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 188 flow [2023-08-04 03:31:38,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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) [2023-08-04 03:31:38,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:38,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:38,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 03:31:38,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:38,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:38,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:38,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1091349742, now seen corresponding path program 1 times [2023-08-04 03:31:38,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:38,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242232199] [2023-08-04 03:31:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:38,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:31:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242232199] [2023-08-04 03:31:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242232199] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151605065] [2023-08-04 03:31:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:38,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:38,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:38,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:38,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 03:31:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:39,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:31:39,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:31:39,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:31:39,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151605065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:31:39,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:31:39,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 03:31:39,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062102388] [2023-08-04 03:31:39,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:31:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:31:39,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:31:39,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:39,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 247 [2023-08-04 03:31:39,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2023-08-04 03:31:39,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:39,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 247 [2023-08-04 03:31:39,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:41,049 INFO L124 PetriNetUnfolderBase]: 21814/34074 cut-off events. [2023-08-04 03:31:41,049 INFO L125 PetriNetUnfolderBase]: For 7896/7896 co-relation queries the response was YES. [2023-08-04 03:31:41,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71472 conditions, 34074 events. 21814/34074 cut-off events. For 7896/7896 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 267512 event pairs, 18207 based on Foata normal form. 0/33682 useless extension candidates. Maximal degree in co-relation 42578. Up to 25788 conditions per place. [2023-08-04 03:31:41,356 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 64 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-04 03:31:41,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 86 transitions, 374 flow [2023-08-04 03:31:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:31:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:31:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-04 03:31:41,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6126855600539811 [2023-08-04 03:31:41,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-04 03:31:41,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-04 03:31:41,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:41,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-04 03:31:41,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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) [2023-08-04 03:31:41,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-08-04 03:31:41,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-08-04 03:31:41,363 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 188 flow. Second operand 3 states and 454 transitions. [2023-08-04 03:31:41,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 86 transitions, 374 flow [2023-08-04 03:31:41,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:41,434 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 198 flow [2023-08-04 03:31:41,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2023-08-04 03:31:41,435 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2023-08-04 03:31:41,435 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 198 flow [2023-08-04 03:31:41,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2023-08-04 03:31:41,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:41,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:41,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 03:31:41,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-04 03:31:41,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:41,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2131563064, now seen corresponding path program 1 times [2023-08-04 03:31:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088013002] [2023-08-04 03:31:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:41,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:31:41,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:41,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088013002] [2023-08-04 03:31:41,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088013002] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987762029] [2023-08-04 03:31:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:41,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:41,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:41,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:41,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 03:31:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:41,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:41,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:31:41,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:31:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987762029] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:41,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:31:41,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925578232] [2023-08-04 03:31:41,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:41,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:41,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:41,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 247 [2023-08-04 03:31:41,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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) [2023-08-04 03:31:41,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:41,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 247 [2023-08-04 03:31:41,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:43,773 INFO L124 PetriNetUnfolderBase]: 20053/31029 cut-off events. [2023-08-04 03:31:43,773 INFO L125 PetriNetUnfolderBase]: For 5583/5583 co-relation queries the response was YES. [2023-08-04 03:31:43,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65752 conditions, 31029 events. 20053/31029 cut-off events. For 5583/5583 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 237441 event pairs, 14480 based on Foata normal form. 5/30833 useless extension candidates. Maximal degree in co-relation 50733. Up to 27946 conditions per place. [2023-08-04 03:31:43,981 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 55 selfloop transitions, 3 changer transitions 1/79 dead transitions. [2023-08-04 03:31:43,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 344 flow [2023-08-04 03:31:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 573 transitions. [2023-08-04 03:31:43,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5799595141700404 [2023-08-04 03:31:43,983 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 573 transitions. [2023-08-04 03:31:43,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 573 transitions. [2023-08-04 03:31:43,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:43,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 573 transitions. [2023-08-04 03:31:43,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 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) [2023-08-04 03:31:43,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 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) [2023-08-04 03:31:43,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 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) [2023-08-04 03:31:43,987 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 198 flow. Second operand 4 states and 573 transitions. [2023-08-04 03:31:43,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 344 flow [2023-08-04 03:31:44,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:44,241 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 210 flow [2023-08-04 03:31:44,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-04 03:31:44,242 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2023-08-04 03:31:44,242 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 210 flow [2023-08-04 03:31:44,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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) [2023-08-04 03:31:44,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:44,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:44,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 03:31:44,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:44,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:44,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash -666155876, now seen corresponding path program 1 times [2023-08-04 03:31:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:44,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886397874] [2023-08-04 03:31:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 03:31:44,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886397874] [2023-08-04 03:31:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886397874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279759050] [2023-08-04 03:31:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:44,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:44,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:44,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:44,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 03:31:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:44,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:44,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 03:31:44,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 03:31:44,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279759050] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:44,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:44,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 03:31:44,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114562858] [2023-08-04 03:31:44,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:44,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:44,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 247 [2023-08-04 03:31:44,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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) [2023-08-04 03:31:44,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:44,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 247 [2023-08-04 03:31:44,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:46,382 INFO L124 PetriNetUnfolderBase]: 19218/28918 cut-off events. [2023-08-04 03:31:46,382 INFO L125 PetriNetUnfolderBase]: For 3968/3968 co-relation queries the response was YES. [2023-08-04 03:31:46,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61974 conditions, 28918 events. 19218/28918 cut-off events. For 3968/3968 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 212064 event pairs, 8767 based on Foata normal form. 125/29011 useless extension candidates. Maximal degree in co-relation 47125. Up to 20841 conditions per place. [2023-08-04 03:31:46,702 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 71 selfloop transitions, 3 changer transitions 1/95 dead transitions. [2023-08-04 03:31:46,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 420 flow [2023-08-04 03:31:46,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:46,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 589 transitions. [2023-08-04 03:31:46,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2023-08-04 03:31:46,705 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 589 transitions. [2023-08-04 03:31:46,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 589 transitions. [2023-08-04 03:31:46,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:46,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 589 transitions. [2023-08-04 03:31:46,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 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) [2023-08-04 03:31:46,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 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) [2023-08-04 03:31:46,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 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) [2023-08-04 03:31:46,708 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 210 flow. Second operand 4 states and 589 transitions. [2023-08-04 03:31:46,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 420 flow [2023-08-04 03:31:46,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 411 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 03:31:46,922 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 215 flow [2023-08-04 03:31:46,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-08-04 03:31:46,922 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 13 predicate places. [2023-08-04 03:31:46,922 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 215 flow [2023-08-04 03:31:46,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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) [2023-08-04 03:31:46,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:46,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:46,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-04 03:31:47,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:47,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:47,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:47,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1911569776, now seen corresponding path program 1 times [2023-08-04 03:31:47,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:47,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278089134] [2023-08-04 03:31:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:47,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 03:31:47,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:47,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278089134] [2023-08-04 03:31:47,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278089134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:47,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566529442] [2023-08-04 03:31:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:47,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:47,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:47,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:47,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 03:31:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:47,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:47,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 03:31:47,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 03:31:47,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566529442] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:47,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:47,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 03:31:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860942028] [2023-08-04 03:31:47,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:47,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 247 [2023-08-04 03:31:47,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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) [2023-08-04 03:31:47,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:47,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 247 [2023-08-04 03:31:47,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:48,688 INFO L124 PetriNetUnfolderBase]: 13632/20817 cut-off events. [2023-08-04 03:31:48,688 INFO L125 PetriNetUnfolderBase]: For 9251/9251 co-relation queries the response was YES. [2023-08-04 03:31:48,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46278 conditions, 20817 events. 13632/20817 cut-off events. For 9251/9251 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 148213 event pairs, 5303 based on Foata normal form. 500/21049 useless extension candidates. Maximal degree in co-relation 43708. Up to 7668 conditions per place. [2023-08-04 03:31:48,807 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 79 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-04 03:31:48,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 466 flow [2023-08-04 03:31:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 597 transitions. [2023-08-04 03:31:48,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.604251012145749 [2023-08-04 03:31:48,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 597 transitions. [2023-08-04 03:31:48,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 597 transitions. [2023-08-04 03:31:48,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:48,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 597 transitions. [2023-08-04 03:31:48,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 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) [2023-08-04 03:31:48,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 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) [2023-08-04 03:31:48,812 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 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) [2023-08-04 03:31:48,812 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 215 flow. Second operand 4 states and 597 transitions. [2023-08-04 03:31:48,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 466 flow [2023-08-04 03:31:48,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 103 transitions, 456 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 03:31:48,894 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 226 flow [2023-08-04 03:31:48,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2023-08-04 03:31:48,895 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2023-08-04 03:31:48,895 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 226 flow [2023-08-04 03:31:48,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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) [2023-08-04 03:31:48,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:48,896 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:48,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 03:31:49,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-04 03:31:49,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:49,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:49,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1167492398, now seen corresponding path program 1 times [2023-08-04 03:31:49,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:49,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394049513] [2023-08-04 03:31:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:49,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 03:31:49,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:31:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394049513] [2023-08-04 03:31:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394049513] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:31:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030989980] [2023-08-04 03:31:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:49,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:31:49,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:31:49,180 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:31:49,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 03:31:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:31:49,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:31:49,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:31:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 03:31:49,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:31:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 03:31:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030989980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:31:49,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:31:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:31:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119740466] [2023-08-04 03:31:49,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:31:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:31:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:31:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:31:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:31:49,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 247 [2023-08-04 03:31:49,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 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) [2023-08-04 03:31:49,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:31:49,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 247 [2023-08-04 03:31:49,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:31:50,759 INFO L124 PetriNetUnfolderBase]: 13616/21252 cut-off events. [2023-08-04 03:31:50,759 INFO L125 PetriNetUnfolderBase]: For 13056/13056 co-relation queries the response was YES. [2023-08-04 03:31:50,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48880 conditions, 21252 events. 13616/21252 cut-off events. For 13056/13056 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 155121 event pairs, 13009 based on Foata normal form. 21/21020 useless extension candidates. Maximal degree in co-relation 46246. Up to 18017 conditions per place. [2023-08-04 03:31:50,854 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 79 selfloop transitions, 3 changer transitions 2/104 dead transitions. [2023-08-04 03:31:50,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 104 transitions, 478 flow [2023-08-04 03:31:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:31:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:31:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 597 transitions. [2023-08-04 03:31:50,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.604251012145749 [2023-08-04 03:31:50,856 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 597 transitions. [2023-08-04 03:31:50,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 597 transitions. [2023-08-04 03:31:50,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:31:50,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 597 transitions. [2023-08-04 03:31:50,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 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) [2023-08-04 03:31:50,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 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) [2023-08-04 03:31:50,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 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) [2023-08-04 03:31:50,859 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 226 flow. Second operand 4 states and 597 transitions. [2023-08-04 03:31:50,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 104 transitions, 478 flow [2023-08-04 03:31:50,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 474 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 03:31:50,969 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 230 flow [2023-08-04 03:31:50,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-08-04 03:31:50,969 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2023-08-04 03:31:50,969 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 230 flow [2023-08-04 03:31:50,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 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) [2023-08-04 03:31:50,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:31:50,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:50,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-04 03:31:51,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 03:31:51,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:31:51,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:31:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1654957278, now seen corresponding path program 1 times [2023-08-04 03:31:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:31:51,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376347718] [2023-08-04 03:31:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:31:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:31:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:31:51,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:31:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:31:51,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:31:51,370 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:31:51,370 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:31:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 03:31:51,370 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:31:51,371 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (2/2) [2023-08-04 03:31:51,374 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:31:51,374 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:31:51,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:31:51 BasicIcfg [2023-08-04 03:31:51,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:31:51,470 INFO L158 Benchmark]: Toolchain (without parser) took 33116.76ms. Allocated memory was 545.3MB in the beginning and 11.9GB in the end (delta: 11.4GB). Free memory was 495.6MB in the beginning and 10.1GB in the end (delta: -9.6GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-08-04 03:31:51,471 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory was 315.6MB in the beginning and 315.4MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:31:51,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.61ms. Allocated memory is still 545.3MB. Free memory was 495.6MB in the beginning and 484.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-04 03:31:51,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.33ms. Allocated memory is still 545.3MB. Free memory was 484.7MB in the beginning and 483.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:31:51,471 INFO L158 Benchmark]: Boogie Preprocessor took 20.02ms. Allocated memory is still 545.3MB. Free memory was 483.1MB in the beginning and 481.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:31:51,471 INFO L158 Benchmark]: RCFGBuilder took 314.19ms. Allocated memory is still 545.3MB. Free memory was 481.4MB in the beginning and 467.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 03:31:51,472 INFO L158 Benchmark]: TraceAbstraction took 32524.33ms. Allocated memory was 545.3MB in the beginning and 11.9GB in the end (delta: 11.4GB). Free memory was 466.7MB in the beginning and 10.1GB in the end (delta: -9.6GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-04 03:31:51,474 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 364.9MB. Free memory was 315.6MB in the beginning and 315.4MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.61ms. Allocated memory is still 545.3MB. Free memory was 495.6MB in the beginning and 484.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.33ms. Allocated memory is still 545.3MB. Free memory was 484.7MB in the beginning and 483.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.02ms. Allocated memory is still 545.3MB. Free memory was 483.1MB in the beginning and 481.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 314.19ms. Allocated memory is still 545.3MB. Free memory was 481.4MB in the beginning and 467.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 32524.33ms. Allocated memory was 545.3MB in the beginning and 11.9GB in the end (delta: 11.4GB). Free memory was 466.7MB in the beginning and 10.1GB in the end (delta: -9.6GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 82 PlacesBefore, 16 PlacesAfterwards, 79 TransitionsBefore, 11 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 980 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 980, independent: 980, independent conditional: 0, independent unconditional: 980, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 698, independent: 698, independent conditional: 0, independent unconditional: 698, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 980, independent: 282, independent conditional: 0, independent unconditional: 282, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 698, unknown conditional: 0, unknown unconditional: 698] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 116 PlacesBefore, 54 PlacesAfterwards, 109 TransitionsBefore, 45 TransitionsAfterwards, 4368 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 15798 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6268, independent: 5903, independent conditional: 0, independent unconditional: 5903, dependent: 365, dependent conditional: 0, dependent unconditional: 365, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2017, independent: 1970, independent conditional: 0, independent unconditional: 1970, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6268, independent: 3933, independent conditional: 0, independent unconditional: 3933, dependent: 318, dependent conditional: 0, dependent unconditional: 318, unknown: 2017, unknown conditional: 0, unknown unconditional: 2017] , Statistics on independence cache: Total cache size (in pairs): 311, Positive cache size: 281, Positive conditional cache size: 0, Positive unconditional cache size: 281, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 138 PlacesBefore, 62 PlacesAfterwards, 143 TransitionsBefore, 61 TransitionsAfterwards, 8008 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 94 TotalNumberOfCompositions, 30986 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13612, independent: 13209, independent conditional: 0, independent unconditional: 13209, dependent: 403, dependent conditional: 0, dependent unconditional: 403, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3831, independent: 3782, independent conditional: 0, independent unconditional: 3782, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13612, independent: 9427, independent conditional: 0, independent unconditional: 9427, dependent: 354, dependent conditional: 0, dependent unconditional: 354, unknown: 3831, unknown conditional: 0, unknown unconditional: 3831] , Statistics on independence cache: Total cache size (in pairs): 598, Positive cache size: 569, Positive conditional cache size: 0, Positive unconditional cache size: 569, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 72]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] 0 unsigned int x1, x2; [L59] 0 pthread_t t1[2], t2[2]; [L61] 0 x1 = __VERIFIER_nondet_uint() [L62] 0 x2 = __VERIFIER_nondet_uint() [L63] CALL 0 assume_abort_if_not(x1 == x2) [L35] COND FALSE 0 !(!cond) [L63] RET 0 assume_abort_if_not(x1 == x2) [L66] 0 int asdf=0; VAL [asdf=0, t1={5:0}, t2={6:0}, x1=4294967290, x2=4294967290] [L66] COND TRUE 0 asdf<2 [L66] FCALL, FORK 0 pthread_create(&t1[asdf], 0, thread1, 0) VAL [asdf=0, pthread_create(&t1[asdf], 0, thread1, 0)=9, t1={5:0}, t2={6:0}, x1=4294967290, x2=4294967290] [L41] 1 x2++ [L42] 1 x2++ VAL [x1=4294967290, x2++=4294967291, x2=4294967291] [L66] 0 asdf++ VAL [asdf=1, t1={5:0}, t2={6:0}, x1=4294967290, x2++=4294967291, x2=4294967291] [L66] COND TRUE 0 asdf<2 [L66] FCALL, FORK 0 pthread_create(&t1[asdf], 0, thread1, 0) VAL [asdf=1, pthread_create(&t1[asdf], 0, thread1, 0)=10, t1={5:0}, t2={6:0}, x1=4294967290, x2++=4294967291, x2=4294967291] [L41] 2 x2++ [L42] 2 x2++ [L43] 2 x2++ VAL [x1=4294967290, x2++=4294967291, x2++=4294967293, x2=4294967293] [L42] 1 x2++ VAL [x1=4294967290, x2++=4294967293, x2=4294967292] [L43] 1 x2++ [L44] 1 x2++ VAL [x1=4294967290, x2++=4294967293, x2++=4294967293, x2=4294967293] [L66] 0 asdf++ VAL [asdf=2, t1={5:0}, t2={6:0}, x1=4294967290, x2++=4294967293, x2++=4294967293, x2=4294967293] [L66] COND FALSE 0 !(asdf<2) [L67] 0 int asdf=0; VAL [asdf=0, asdf=2, t1={5:0}, t2={6:0}, x1=4294967290, x2++=4294967293, x2++=4294967293, x2=4294967293] [L67] COND TRUE 0 asdf<2 [L44] 1 x2++ [L46] 1 return 0; [L67] FCALL, FORK 0 pthread_create(&t2[asdf], 0, thread2, 0) VAL [\result={0:0}, asdf=0, asdf=2, pthread_create(&t2[asdf], 0, thread2, 0)=11, t1={5:0}, t2={6:0}, x1=4294967290, x2++=4294967293, x2=4294967294] [L50] 3 x1++ VAL [\result={0:0}, x1=4294967291, x2++=4294967293, x2=4294967294] [L51] 3 x1++ [L52] 3 x1++ VAL [\result={0:0}, x1++=4294967292, x1=4294967292, x2++=4294967293, x2=4294967294] [L43] 2 x2++ VAL [\result={0:0}, x1++=4294967292, x1=4294967292, x2=4294967294] [L44] 2 x2++ [L46] 2 return 0; [L67] 0 asdf++ VAL [\result={0:0}, asdf=1, asdf=2, t1={5:0}, t2={6:0}, x1++=4294967292, x1=4294967292, x2=4294967295] [L67] COND TRUE 0 asdf<2 [L67] FCALL, FORK 0 pthread_create(&t2[asdf], 0, thread2, 0) VAL [\result={0:0}, asdf=1, asdf=2, pthread_create(&t2[asdf], 0, thread2, 0)=12, t1={5:0}, t2={6:0}, x1++=4294967292, x1=4294967292, x2=4294967295] [L50] 4 x1++ [L51] 4 x1++ VAL [\result={0:0}, x1++=4294967292, x1++=4294967293, x1=4294967293, x2=4294967295] [L67] 0 asdf++ VAL [\result={0:0}, asdf=2, asdf=2, t1={5:0}, t2={6:0}, x1++=4294967292, x1++=4294967293, x1=4294967293, x2=4294967295] [L52] 3 x1++ VAL [\result={0:0}, x1++=4294967293, x1=4294967293, x2=4294967295] [L53] 3 x1++ [L55] 3 return 0; [L67] COND FALSE 0 !(asdf<2) [L68] 0 int asdf=0; VAL [\result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, t1={5:0}, t2={6:0}, x1++=4294967293, x1=4294967294, x2=4294967295] [L68] COND TRUE 0 asdf<2 [L68] 0 t1[asdf] VAL [\result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, t1={5:0}, t1[asdf]=9, t2={6:0}, x1++=4294967293, x1=4294967294, x2=4294967295] [L51] 4 x1++ VAL [\result={0:0}, \result={0:0}, x1=4294967294, x2=4294967295] [L52] 4 x1++ [L53] 4 x1++ [L55] 4 return 0; [L68] FCALL, JOIN 1 pthread_join(t1[asdf], 0) VAL [\result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, t1={5:0}, t1[asdf]=9, t2={6:0}, x1=4294967296, x2=4294967295] [L68] 0 asdf++ VAL [\result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, t1={5:0}, t2={6:0}, x1=4294967296, x2=4294967295] [L68] COND TRUE 0 asdf<2 [L68] 0 t1[asdf] VAL [\result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, t1={5:0}, t1[asdf]=10, t2={6:0}, x1=4294967296, x2=4294967295] [L68] FCALL, JOIN 2 pthread_join(t1[asdf], 0) VAL [\result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, t1={5:0}, t1[asdf]=10, t2={6:0}, x1=4294967296, x2=4294967295] [L68] 0 asdf++ VAL [\result={0:0}, \result={0:0}, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, x1=4294967296, x2=4294967295] [L68] COND FALSE 0 !(asdf<2) [L69] 0 int asdf=0; VAL [\result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, x1=4294967296, x2=4294967295] [L69] COND TRUE 0 asdf<2 [L69] 0 t2[asdf] VAL [\result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, t2[asdf]=11, x1=4294967296, x2=4294967295] [L69] FCALL, JOIN 3 pthread_join(t2[asdf], 0) VAL [\result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, t2[asdf]=11, x1=4294967296, x2=4294967295] [L69] 0 asdf++ VAL [\result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, x1=4294967296, x2=4294967295] [L69] COND TRUE 0 asdf<2 [L69] 0 t2[asdf] VAL [\result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, t2[asdf]=12, x1=4294967296, x2=4294967295] [L69] FCALL, JOIN 4 pthread_join(t2[asdf], 0) VAL [\result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, t2[asdf]=12, x1=4294967296, x2=4294967295] [L69] 0 asdf++ VAL [\result={0:0}, \result={0:0}, asdf=2, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, x1=4294967296, x2=4294967295] [L69] COND FALSE 0 !(asdf<2) [L71] CALL 0 assume_abort_if_not(x1 != x2) [L35] COND FALSE 0 !(!cond) [L71] RET 0 assume_abort_if_not(x1 != x2) [L72] 0 reach_error() VAL [\result={0:0}, \result={0:0}, asdf=2, asdf=2, asdf=2, asdf=2, t1={5:0}, t2={6:0}, x1=4294967296, x2=4294967295] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 140 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: 2.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 170 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: 5.1s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 325 IncrementalHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 0 mSDtfsCounter, 325 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=2, InterpolantAutomatonStates: 16, 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, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 42/50 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 170 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: 24.6s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 332 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 257 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1021 IncrementalHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 18 mSDtfsCounter, 1021 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 421 GetRequests, 391 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=8, InterpolantAutomatonStates: 28, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 528 NumberOfCodeBlocks, 528 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 620 ConstructedInterpolants, 0 QuantifiedInterpolants, 838 SizeOfPredicates, 0 NumberOfNonLiveVariables, 987 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 132/147 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-04 03:31:51,506 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...