/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:47:01,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:47:01,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:47:02,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:47:02,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:47:02,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:47:02,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:47:02,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:47:02,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:47:02,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:47:02,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:47:02,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:47:02,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:47:02,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:47:02,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:47:02,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:47:02,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:47:02,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:47:02,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:47:02,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:47:02,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:47:02,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:47:02,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:47:02,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:47:02,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 18:47:02,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:47:02,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:47:02,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:47:02,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 18:47:02,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:47:02,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:47:02,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:47:02,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:47:02,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:47:02,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:47:02,088 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:47:02,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:47:02,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:47:02,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:47:02,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:47:02,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:47:02,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:47:02,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:47:02,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:47:02,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:47:02,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:47:02,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:47:02,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:47:02,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:47:02,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:47:02,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:47:02,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:47:02,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:47:02,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:47:02,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:47:02,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:47:02,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:47:02,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:47:02,091 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:47:02,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:47:02,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:47:02,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:47:02,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:47:02,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:47:02,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:47:02,396 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:47:02,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-05 18:47:03,362 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:47:03,622 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:47:03,623 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-05 18:47:03,645 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7577c344c/6ec8694a03ec41bab9512d2a72c6db88/FLAG7e2b36a69 [2022-12-05 18:47:03,659 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7577c344c/6ec8694a03ec41bab9512d2a72c6db88 [2022-12-05 18:47:03,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:47:03,662 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:47:03,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:47:03,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:47:03,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:47:03,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:47:03" (1/1) ... [2022-12-05 18:47:03,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5962696a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:03, skipping insertion in model container [2022-12-05 18:47:03,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:47:03" (1/1) ... [2022-12-05 18:47:03,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:47:03,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:47:03,845 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2022-12-05 18:47:03,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:47:03,966 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:47:03,975 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2022-12-05 18:47:03,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:47:04,027 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:47:04,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04 WrapperNode [2022-12-05 18:47:04,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:47:04,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:47:04,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:47:04,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:47:04,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,060 INFO L138 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2022-12-05 18:47:04,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:47:04,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:47:04,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:47:04,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:47:04,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,079 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:47:04,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:47:04,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:47:04,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:47:04,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (1/1) ... [2022-12-05 18:47:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:47:04,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:47:04,123 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) [2022-12-05 18:47:04,130 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 [2022-12-05 18:47:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:47:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-05 18:47:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-05 18:47:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:47:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 18:47:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:47:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:47:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:47:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:47:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:47:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:47:04,152 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:47:04,250 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:47:04,252 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:47:04,413 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:47:04,418 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:47:04,418 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 18:47:04,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:47:04 BoogieIcfgContainer [2022-12-05 18:47:04,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:47:04,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:47:04,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:47:04,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:47:04,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:47:03" (1/3) ... [2022-12-05 18:47:04,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e45043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:47:04, skipping insertion in model container [2022-12-05 18:47:04,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:04" (2/3) ... [2022-12-05 18:47:04,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e45043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:47:04, skipping insertion in model container [2022-12-05 18:47:04,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:47:04" (3/3) ... [2022-12-05 18:47:04,425 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-05 18:47:04,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:47:04,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-05 18:47:04,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:47:04,485 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-05 18:47:04,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 210 flow [2022-12-05 18:47:04,538 INFO L130 PetriNetUnfolder]: 3/100 cut-off events. [2022-12-05 18:47:04,538 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 18:47:04,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 100 events. 3/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-05 18:47:04,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 101 transitions, 210 flow [2022-12-05 18:47:04,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 86 transitions, 175 flow [2022-12-05 18:47:04,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:47:04,561 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@612a6839, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:47:04,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 18:47:04,595 INFO L130 PetriNetUnfolder]: 0/59 cut-off events. [2022-12-05 18:47:04,595 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:47:04,596 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:04,597 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:04,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:04,601 INFO L85 PathProgramCache]: Analyzing trace with hash 132121231, now seen corresponding path program 1 times [2022-12-05 18:47:04,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:04,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952576941] [2022-12-05 18:47:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:04,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:05,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:05,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952576941] [2022-12-05 18:47:05,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952576941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:05,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:05,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 18:47:05,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353722983] [2022-12-05 18:47:05,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:05,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 18:47:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 18:47:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 18:47:05,056 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-12-05 18:47:05,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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) [2022-12-05 18:47:05,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:05,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-12-05 18:47:05,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:05,209 INFO L130 PetriNetUnfolder]: 62/338 cut-off events. [2022-12-05 18:47:05,210 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 18:47:05,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 338 events. 62/338 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1533 event pairs, 14 based on Foata normal form. 8/338 useless extension candidates. Maximal degree in co-relation 448. Up to 60 conditions per place. [2022-12-05 18:47:05,213 INFO L137 encePairwiseOnDemand]: 89/101 looper letters, 32 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2022-12-05 18:47:05,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 323 flow [2022-12-05 18:47:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:47:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:47:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 711 transitions. [2022-12-05 18:47:05,240 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7821782178217822 [2022-12-05 18:47:05,241 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 175 flow. Second operand 9 states and 711 transitions. [2022-12-05 18:47:05,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 323 flow [2022-12-05 18:47:05,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 18:47:05,247 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 254 flow [2022-12-05 18:47:05,249 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2022-12-05 18:47:05,251 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 9 predicate places. [2022-12-05 18:47:05,251 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 254 flow [2022-12-05 18:47:05,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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) [2022-12-05 18:47:05,251 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:05,252 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:05,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:47:05,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:05,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1009573006, now seen corresponding path program 1 times [2022-12-05 18:47:05,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:05,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289725118] [2022-12-05 18:47:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:05,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289725118] [2022-12-05 18:47:05,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289725118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:05,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:05,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 18:47:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738843977] [2022-12-05 18:47:05,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:05,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 18:47:05,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 18:47:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 18:47:05,391 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-12-05 18:47:05,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2022-12-05 18:47:05,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:05,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-12-05 18:47:05,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:05,532 INFO L130 PetriNetUnfolder]: 68/370 cut-off events. [2022-12-05 18:47:05,532 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2022-12-05 18:47:05,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 370 events. 68/370 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1823 event pairs, 20 based on Foata normal form. 5/373 useless extension candidates. Maximal degree in co-relation 591. Up to 72 conditions per place. [2022-12-05 18:47:05,538 INFO L137 encePairwiseOnDemand]: 91/101 looper letters, 32 selfloop transitions, 23 changer transitions 0/117 dead transitions. [2022-12-05 18:47:05,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 117 transitions, 432 flow [2022-12-05 18:47:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:47:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:47:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2022-12-05 18:47:05,546 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2022-12-05 18:47:05,546 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 254 flow. Second operand 9 states and 707 transitions. [2022-12-05 18:47:05,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 117 transitions, 432 flow [2022-12-05 18:47:05,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 18:47:05,558 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 374 flow [2022-12-05 18:47:05,558 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=374, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2022-12-05 18:47:05,559 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 20 predicate places. [2022-12-05 18:47:05,559 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 374 flow [2022-12-05 18:47:05,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2022-12-05 18:47:05,559 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:05,560 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:05,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:47:05,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:05,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1485635243, now seen corresponding path program 1 times [2022-12-05 18:47:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:05,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958838271] [2022-12-05 18:47:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:05,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:05,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:05,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958838271] [2022-12-05 18:47:05,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958838271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:05,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:05,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:47:05,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116964201] [2022-12-05 18:47:05,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:05,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:47:05,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:05,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:47:05,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:47:05,746 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 101 [2022-12-05 18:47:05,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2022-12-05 18:47:05,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:05,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 101 [2022-12-05 18:47:05,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:05,988 INFO L130 PetriNetUnfolder]: 90/452 cut-off events. [2022-12-05 18:47:05,989 INFO L131 PetriNetUnfolder]: For 226/228 co-relation queries the response was YES. [2022-12-05 18:47:05,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 452 events. 90/452 cut-off events. For 226/228 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2367 event pairs, 0 based on Foata normal form. 12/462 useless extension candidates. Maximal degree in co-relation 856. Up to 32 conditions per place. [2022-12-05 18:47:05,993 INFO L137 encePairwiseOnDemand]: 84/101 looper letters, 45 selfloop transitions, 60 changer transitions 15/181 dead transitions. [2022-12-05 18:47:05,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 181 transitions, 976 flow [2022-12-05 18:47:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:47:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:47:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1480 transitions. [2022-12-05 18:47:05,996 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.771235018238666 [2022-12-05 18:47:05,997 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 374 flow. Second operand 19 states and 1480 transitions. [2022-12-05 18:47:05,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 181 transitions, 976 flow [2022-12-05 18:47:06,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 181 transitions, 972 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-05 18:47:06,006 INFO L231 Difference]: Finished difference. Result has 137 places, 139 transitions, 770 flow [2022-12-05 18:47:06,006 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=770, PETRI_PLACES=137, PETRI_TRANSITIONS=139} [2022-12-05 18:47:06,007 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 49 predicate places. [2022-12-05 18:47:06,007 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 139 transitions, 770 flow [2022-12-05 18:47:06,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2022-12-05 18:47:06,008 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:06,008 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:47:06,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash -923334572, now seen corresponding path program 1 times [2022-12-05 18:47:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:06,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623588666] [2022-12-05 18:47:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:06,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:06,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623588666] [2022-12-05 18:47:06,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623588666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:06,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:06,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:47:06,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416543911] [2022-12-05 18:47:06,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:06,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:47:06,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:47:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:47:06,151 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 101 [2022-12-05 18:47:06,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 770 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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) [2022-12-05 18:47:06,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:06,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 101 [2022-12-05 18:47:06,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:06,335 INFO L130 PetriNetUnfolder]: 76/396 cut-off events. [2022-12-05 18:47:06,335 INFO L131 PetriNetUnfolder]: For 524/525 co-relation queries the response was YES. [2022-12-05 18:47:06,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 396 events. 76/396 cut-off events. For 524/525 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1945 event pairs, 4 based on Foata normal form. 5/399 useless extension candidates. Maximal degree in co-relation 986. Up to 32 conditions per place. [2022-12-05 18:47:06,339 INFO L137 encePairwiseOnDemand]: 86/101 looper letters, 49 selfloop transitions, 72 changer transitions 0/182 dead transitions. [2022-12-05 18:47:06,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 182 transitions, 1253 flow [2022-12-05 18:47:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:47:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:47:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1461 transitions. [2022-12-05 18:47:06,342 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7613340281396561 [2022-12-05 18:47:06,342 INFO L175 Difference]: Start difference. First operand has 137 places, 139 transitions, 770 flow. Second operand 19 states and 1461 transitions. [2022-12-05 18:47:06,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 182 transitions, 1253 flow [2022-12-05 18:47:06,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 182 transitions, 1098 flow, removed 35 selfloop flow, removed 10 redundant places. [2022-12-05 18:47:06,350 INFO L231 Difference]: Finished difference. Result has 149 places, 161 transitions, 989 flow [2022-12-05 18:47:06,350 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=989, PETRI_PLACES=149, PETRI_TRANSITIONS=161} [2022-12-05 18:47:06,351 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 61 predicate places. [2022-12-05 18:47:06,351 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 161 transitions, 989 flow [2022-12-05 18:47:06,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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) [2022-12-05 18:47:06,352 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:06,352 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:06,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 18:47:06,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:06,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:06,353 INFO L85 PathProgramCache]: Analyzing trace with hash -39155278, now seen corresponding path program 1 times [2022-12-05 18:47:06,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:06,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289357402] [2022-12-05 18:47:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:06,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:06,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:06,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289357402] [2022-12-05 18:47:06,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289357402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:06,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:06,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:47:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836036880] [2022-12-05 18:47:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:06,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:47:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:06,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:47:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:47:06,523 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 101 [2022-12-05 18:47:06,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 161 transitions, 989 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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) [2022-12-05 18:47:06,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:06,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 101 [2022-12-05 18:47:06,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:06,594 INFO L130 PetriNetUnfolder]: 26/276 cut-off events. [2022-12-05 18:47:06,594 INFO L131 PetriNetUnfolder]: For 247/247 co-relation queries the response was YES. [2022-12-05 18:47:06,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 276 events. 26/276 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1014 event pairs, 13 based on Foata normal form. 10/283 useless extension candidates. Maximal degree in co-relation 588. Up to 54 conditions per place. [2022-12-05 18:47:06,598 INFO L137 encePairwiseOnDemand]: 91/101 looper letters, 19 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2022-12-05 18:47:06,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 111 transitions, 556 flow [2022-12-05 18:47:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 18:47:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 18:47:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2022-12-05 18:47:06,602 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7287128712871287 [2022-12-05 18:47:06,602 INFO L175 Difference]: Start difference. First operand has 149 places, 161 transitions, 989 flow. Second operand 5 states and 368 transitions. [2022-12-05 18:47:06,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 111 transitions, 556 flow [2022-12-05 18:47:06,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 111 transitions, 449 flow, removed 12 selfloop flow, removed 21 redundant places. [2022-12-05 18:47:06,606 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 417 flow [2022-12-05 18:47:06,607 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2022-12-05 18:47:06,608 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 34 predicate places. [2022-12-05 18:47:06,608 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 417 flow [2022-12-05 18:47:06,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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) [2022-12-05 18:47:06,609 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:06,609 INFO L213 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, 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] [2022-12-05 18:47:06,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 18:47:06,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1831545129, now seen corresponding path program 1 times [2022-12-05 18:47:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:06,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696235331] [2022-12-05 18:47:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:06,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:06,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:06,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696235331] [2022-12-05 18:47:06,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696235331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:06,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:06,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-05 18:47:06,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434537429] [2022-12-05 18:47:06,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:06,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:47:06,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:47:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-05 18:47:06,760 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 101 [2022-12-05 18:47:06,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 72.33333333333333) internal successors, (651), 9 states have internal predecessors, (651), 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) [2022-12-05 18:47:06,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:06,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 101 [2022-12-05 18:47:06,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:06,924 INFO L130 PetriNetUnfolder]: 7/190 cut-off events. [2022-12-05 18:47:06,924 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-12-05 18:47:06,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 190 events. 7/190 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 543 event pairs, 1 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 375. Up to 19 conditions per place. [2022-12-05 18:47:06,925 INFO L137 encePairwiseOnDemand]: 85/101 looper letters, 19 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2022-12-05 18:47:06,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 114 transitions, 531 flow [2022-12-05 18:47:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-05 18:47:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-05 18:47:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1686 transitions. [2022-12-05 18:47:06,928 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7257856220404649 [2022-12-05 18:47:06,928 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 417 flow. Second operand 23 states and 1686 transitions. [2022-12-05 18:47:06,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 114 transitions, 531 flow [2022-12-05 18:47:06,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 114 transitions, 501 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 18:47:06,931 INFO L231 Difference]: Finished difference. Result has 136 places, 110 transitions, 455 flow [2022-12-05 18:47:06,931 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=455, PETRI_PLACES=136, PETRI_TRANSITIONS=110} [2022-12-05 18:47:06,933 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 48 predicate places. [2022-12-05 18:47:06,933 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 110 transitions, 455 flow [2022-12-05 18:47:06,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.33333333333333) internal successors, (651), 9 states have internal predecessors, (651), 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) [2022-12-05 18:47:06,934 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:06,934 INFO L213 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, 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] [2022-12-05 18:47:06,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:47:06,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:06,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:06,935 INFO L85 PathProgramCache]: Analyzing trace with hash 722690768, now seen corresponding path program 1 times [2022-12-05 18:47:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:06,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271275414] [2022-12-05 18:47:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:07,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271275414] [2022-12-05 18:47:07,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271275414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:07,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:07,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-05 18:47:07,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624037120] [2022-12-05 18:47:07,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:07,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:47:07,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:07,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:47:07,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-05 18:47:07,067 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 101 [2022-12-05 18:47:07,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 110 transitions, 455 flow. Second operand has 9 states, 9 states have (on average 72.77777777777777) internal successors, (655), 9 states have internal predecessors, (655), 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) [2022-12-05 18:47:07,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:07,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 101 [2022-12-05 18:47:07,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:07,213 INFO L130 PetriNetUnfolder]: 7/186 cut-off events. [2022-12-05 18:47:07,214 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-12-05 18:47:07,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 186 events. 7/186 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 520 event pairs, 1 based on Foata normal form. 2/187 useless extension candidates. Maximal degree in co-relation 387. Up to 19 conditions per place. [2022-12-05 18:47:07,217 INFO L137 encePairwiseOnDemand]: 85/101 looper letters, 17 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2022-12-05 18:47:07,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 112 transitions, 559 flow [2022-12-05 18:47:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 18:47:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 18:47:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1538 transitions. [2022-12-05 18:47:07,220 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7251296558227251 [2022-12-05 18:47:07,220 INFO L175 Difference]: Start difference. First operand has 136 places, 110 transitions, 455 flow. Second operand 21 states and 1538 transitions. [2022-12-05 18:47:07,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 112 transitions, 559 flow [2022-12-05 18:47:07,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 112 transitions, 492 flow, removed 2 selfloop flow, removed 16 redundant places. [2022-12-05 18:47:07,223 INFO L231 Difference]: Finished difference. Result has 138 places, 108 transitions, 450 flow [2022-12-05 18:47:07,223 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=450, PETRI_PLACES=138, PETRI_TRANSITIONS=108} [2022-12-05 18:47:07,223 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 50 predicate places. [2022-12-05 18:47:07,224 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 108 transitions, 450 flow [2022-12-05 18:47:07,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.77777777777777) internal successors, (655), 9 states have internal predecessors, (655), 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) [2022-12-05 18:47:07,224 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:07,224 INFO L213 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, 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] [2022-12-05 18:47:07,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 18:47:07,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash 965648642, now seen corresponding path program 1 times [2022-12-05 18:47:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:07,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459772242] [2022-12-05 18:47:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:07,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:07,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459772242] [2022-12-05 18:47:07,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459772242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:07,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:07,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:47:07,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802953773] [2022-12-05 18:47:07,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:07,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:47:07,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:47:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:47:07,429 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2022-12-05 18:47:07,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 108 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 64.375) internal successors, (515), 8 states have internal predecessors, (515), 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) [2022-12-05 18:47:07,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:07,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2022-12-05 18:47:07,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:07,536 INFO L130 PetriNetUnfolder]: 12/182 cut-off events. [2022-12-05 18:47:07,536 INFO L131 PetriNetUnfolder]: For 83/85 co-relation queries the response was YES. [2022-12-05 18:47:07,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 182 events. 12/182 cut-off events. For 83/85 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 438 event pairs, 1 based on Foata normal form. 13/195 useless extension candidates. Maximal degree in co-relation 363. Up to 37 conditions per place. [2022-12-05 18:47:07,537 INFO L137 encePairwiseOnDemand]: 95/101 looper letters, 28 selfloop transitions, 7 changer transitions 0/108 dead transitions. [2022-12-05 18:47:07,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 108 transitions, 505 flow [2022-12-05 18:47:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:47:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:47:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 401 transitions. [2022-12-05 18:47:07,539 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6617161716171617 [2022-12-05 18:47:07,539 INFO L175 Difference]: Start difference. First operand has 138 places, 108 transitions, 450 flow. Second operand 6 states and 401 transitions. [2022-12-05 18:47:07,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 108 transitions, 505 flow [2022-12-05 18:47:07,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 108 transitions, 436 flow, removed 2 selfloop flow, removed 20 redundant places. [2022-12-05 18:47:07,541 INFO L231 Difference]: Finished difference. Result has 123 places, 105 transitions, 368 flow [2022-12-05 18:47:07,541 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=123, PETRI_TRANSITIONS=105} [2022-12-05 18:47:07,542 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 35 predicate places. [2022-12-05 18:47:07,542 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 105 transitions, 368 flow [2022-12-05 18:47:07,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.375) internal successors, (515), 8 states have internal predecessors, (515), 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) [2022-12-05 18:47:07,542 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:07,543 INFO L213 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, 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] [2022-12-05 18:47:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 18:47:07,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-05 18:47:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1329513679, now seen corresponding path program 1 times [2022-12-05 18:47:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:07,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931218133] [2022-12-05 18:47:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:07,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:07,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931218133] [2022-12-05 18:47:07,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931218133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:07,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:07,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:47:07,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574488956] [2022-12-05 18:47:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:07,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:47:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:47:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:47:07,685 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 101 [2022-12-05 18:47:07,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 105 transitions, 368 flow. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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) [2022-12-05 18:47:07,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:07,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 101 [2022-12-05 18:47:07,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:07,804 INFO L130 PetriNetUnfolder]: 4/154 cut-off events. [2022-12-05 18:47:07,804 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-12-05 18:47:07,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 154 events. 4/154 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 319 event pairs, 1 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 287. Up to 21 conditions per place. [2022-12-05 18:47:07,805 INFO L137 encePairwiseOnDemand]: 87/101 looper letters, 0 selfloop transitions, 0 changer transitions 104/104 dead transitions. [2022-12-05 18:47:07,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 104 transitions, 456 flow [2022-12-05 18:47:07,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 18:47:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 18:47:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1170 transitions. [2022-12-05 18:47:07,806 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.724009900990099 [2022-12-05 18:47:07,807 INFO L175 Difference]: Start difference. First operand has 123 places, 105 transitions, 368 flow. Second operand 16 states and 1170 transitions. [2022-12-05 18:47:07,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 104 transitions, 456 flow [2022-12-05 18:47:07,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 104 transitions, 441 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 18:47:07,808 INFO L231 Difference]: Finished difference. Result has 131 places, 0 transitions, 0 flow [2022-12-05 18:47:07,808 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=131, PETRI_TRANSITIONS=0} [2022-12-05 18:47:07,810 INFO L294 CegarLoopForPetriNet]: 88 programPoint places, 43 predicate places. [2022-12-05 18:47:07,810 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 0 transitions, 0 flow [2022-12-05 18:47:07,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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) [2022-12-05 18:47:07,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 18:47:07,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-12-05 18:47:07,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-12-05 18:47:07,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 18:47:07,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 18:47:07,813 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:07,816 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 18:47:07,816 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 18:47:07,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 06:47:07 BasicIcfg [2022-12-05 18:47:07,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 18:47:07,821 INFO L158 Benchmark]: Toolchain (without parser) took 4159.92ms. Allocated memory was 200.3MB in the beginning and 289.4MB in the end (delta: 89.1MB). Free memory was 174.5MB in the beginning and 180.9MB in the end (delta: -6.5MB). Peak memory consumption was 83.2MB. Max. memory is 8.0GB. [2022-12-05 18:47:07,822 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 176.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 18:47:07,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.64ms. Allocated memory is still 200.3MB. Free memory was 173.9MB in the beginning and 155.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-05 18:47:07,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.86ms. Allocated memory is still 200.3MB. Free memory was 155.1MB in the beginning and 153.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 18:47:07,822 INFO L158 Benchmark]: Boogie Preprocessor took 21.34ms. Allocated memory is still 200.3MB. Free memory was 153.0MB in the beginning and 151.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 18:47:07,822 INFO L158 Benchmark]: RCFGBuilder took 337.32ms. Allocated memory is still 200.3MB. Free memory was 151.4MB in the beginning and 136.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 18:47:07,823 INFO L158 Benchmark]: TraceAbstraction took 3400.05ms. Allocated memory was 200.3MB in the beginning and 289.4MB in the end (delta: 89.1MB). Free memory was 136.2MB in the beginning and 180.9MB in the end (delta: -44.7MB). Peak memory consumption was 44.4MB. Max. memory is 8.0GB. [2022-12-05 18:47:07,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 176.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 363.64ms. Allocated memory is still 200.3MB. Free memory was 173.9MB in the beginning and 155.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.86ms. Allocated memory is still 200.3MB. Free memory was 155.1MB in the beginning and 153.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.34ms. Allocated memory is still 200.3MB. Free memory was 153.0MB in the beginning and 151.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 337.32ms. Allocated memory is still 200.3MB. Free memory was 151.4MB in the beginning and 136.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3400.05ms. Allocated memory was 200.3MB in the beginning and 289.4MB in the end (delta: 89.1MB). Free memory was 136.2MB in the beginning and 180.9MB in the end (delta: -44.7MB). Peak memory consumption was 44.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 119 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 588 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 588 mSDsluCounter, 441 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 315 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 780 IncrementalHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 126 mSDtfsCounter, 780 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=989occurred in iteration=4, InterpolantAutomatonStates: 127, 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, 1.4s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 534 ConstructedInterpolants, 0 QuantifiedInterpolants, 1927 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 18:47:07,841 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...