/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_24-multiple-protecting_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:37:43,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:37:43,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:37:43,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:37:43,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:37:43,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:37:43,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:37:43,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:37:43,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:37:43,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:37:43,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:37:43,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:37:43,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:37:43,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:37:43,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:37:43,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:37:43,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:37:43,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:37:43,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:37:43,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:37:43,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:37:43,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:37:43,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:37:43,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:37:43,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 22:37:43,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:37:43,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:37:43,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:37:43,921 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 [2022-09-20 22:37:43,942 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:37:43,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:37:43,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:37:43,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:37:43,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:37:43,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:37:43,944 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:37:43,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:37:43,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:37:43,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:37:43,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:37:43,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:37:43,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:37:43,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:37:43,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:37:43,946 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:37:43,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:37:43,946 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:37:43,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:37:43,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:37:43,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:37:43,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:37:43,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:37:43,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:37:43,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:37:43,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:37:43,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:37:43,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:37:43,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:37:43,948 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:37:43,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:37:43,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:37:44,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:37:44,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:37:44,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:37:44,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:37:44,139 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:37:44,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-09-20 22:37:44,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6e045a8/8f7c9a346ec74b03aa0da6537024363c/FLAGdd56011a4 [2022-09-20 22:37:44,610 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:37:44,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-09-20 22:37:44,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6e045a8/8f7c9a346ec74b03aa0da6537024363c/FLAGdd56011a4 [2022-09-20 22:37:44,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6e045a8/8f7c9a346ec74b03aa0da6537024363c [2022-09-20 22:37:44,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:37:44,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:37:44,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:37:44,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:37:44,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:37:44,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:37:44" (1/1) ... [2022-09-20 22:37:44,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af176d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:44, skipping insertion in model container [2022-09-20 22:37:44,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:37:44" (1/1) ... [2022-09-20 22:37:44,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:37:45,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:37:45,146 WARN L230 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_24-multiple-protecting_true.i[1096,1109] [2022-09-20 22:37:45,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:37:45,318 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:37:45,329 WARN L230 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_24-multiple-protecting_true.i[1096,1109] [2022-09-20 22:37:45,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:37:45,408 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:37:45,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45 WrapperNode [2022-09-20 22:37:45,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:37:45,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:37:45,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:37:45,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:37:45,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,469 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2022-09-20 22:37:45,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:37:45,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:37:45,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:37:45,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:37:45,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:37:45,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:37:45,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:37:45,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:37:45,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (1/1) ... [2022-09-20 22:37:45,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:37:45,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:37:45,544 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) [2022-09-20 22:37:45,564 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 [2022-09-20 22:37:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:37:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:37:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 22:37:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:37:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:37:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-20 22:37:45,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-20 22:37:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:37:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:37:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:37:45,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:37:45,586 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:37:45,736 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:37:45,738 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:37:45,951 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:37:45,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:37:45,963 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:37:45,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:37:45 BoogieIcfgContainer [2022-09-20 22:37:45,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:37:45,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:37:45,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:37:45,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:37:45,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:37:44" (1/3) ... [2022-09-20 22:37:45,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fc9d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:37:45, skipping insertion in model container [2022-09-20 22:37:45,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:45" (2/3) ... [2022-09-20 22:37:45,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fc9d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:37:45, skipping insertion in model container [2022-09-20 22:37:45,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:37:45" (3/3) ... [2022-09-20 22:37:45,979 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2022-09-20 22:37:45,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:37:45,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-20 22:37:45,993 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:37:46,047 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-20 22:37:46,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 143 transitions, 294 flow [2022-09-20 22:37:46,175 INFO L130 PetriNetUnfolder]: 4/142 cut-off events. [2022-09-20 22:37:46,176 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 22:37:46,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 142 events. 4/142 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-09-20 22:37:46,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 143 transitions, 294 flow [2022-09-20 22:37:46,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 127 transitions, 257 flow [2022-09-20 22:37:46,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:37:46,202 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;@15eeae44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:37:46,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 22:37:46,214 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2022-09-20 22:37:46,214 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:37:46,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:46,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:46,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-09-20 22:37:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1006366235, now seen corresponding path program 1 times [2022-09-20 22:37:46,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:46,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364811694] [2022-09-20 22:37:46,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:46,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:46,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:46,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364811694] [2022-09-20 22:37:46,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364811694] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:46,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:46,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:37:46,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143089327] [2022-09-20 22:37:46,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:46,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:37:46,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:46,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:37:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:37:46,655 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 143 [2022-09-20 22:37:46,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2022-09-20 22:37:46,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:46,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 143 [2022-09-20 22:37:46,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:46,974 INFO L130 PetriNetUnfolder]: 89/691 cut-off events. [2022-09-20 22:37:46,975 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 22:37:46,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 691 events. 89/691 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3814 event pairs, 23 based on Foata normal form. 16/692 useless extension candidates. Maximal degree in co-relation 866. Up to 72 conditions per place. [2022-09-20 22:37:46,983 INFO L137 encePairwiseOnDemand]: 122/143 looper letters, 35 selfloop transitions, 23 changer transitions 5/159 dead transitions. [2022-09-20 22:37:46,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 159 transitions, 447 flow [2022-09-20 22:37:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:37:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:37:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2022-09-20 22:37:47,003 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.811965811965812 [2022-09-20 22:37:47,003 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2022-09-20 22:37:47,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2022-09-20 22:37:47,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:47,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2022-09-20 22:37:47,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 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) [2022-09-20 22:37:47,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 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) [2022-09-20 22:37:47,024 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 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) [2022-09-20 22:37:47,026 INFO L175 Difference]: Start difference. First operand has 128 places, 127 transitions, 257 flow. Second operand 9 states and 1045 transitions. [2022-09-20 22:37:47,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 159 transitions, 447 flow [2022-09-20 22:37:47,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 159 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:37:47,042 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 393 flow [2022-09-20 22:37:47,044 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2022-09-20 22:37:47,047 INFO L287 CegarLoopForPetriNet]: 128 programPoint places, 11 predicate places. [2022-09-20 22:37:47,048 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 393 flow [2022-09-20 22:37:47,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2022-09-20 22:37:47,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:47,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:47,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:37:47,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-09-20 22:37:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash -405400082, now seen corresponding path program 1 times [2022-09-20 22:37:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:47,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157527797] [2022-09-20 22:37:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:47,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:47,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:47,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157527797] [2022-09-20 22:37:47,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157527797] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:47,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:47,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:37:47,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582830964] [2022-09-20 22:37:47,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:47,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:37:47,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:37:47,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:37:47,231 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 143 [2022-09-20 22:37:47,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 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) [2022-09-20 22:37:47,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:47,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 143 [2022-09-20 22:37:47,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:47,420 INFO L130 PetriNetUnfolder]: 67/542 cut-off events. [2022-09-20 22:37:47,420 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-09-20 22:37:47,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 542 events. 67/542 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2511 event pairs, 28 based on Foata normal form. 13/547 useless extension candidates. Maximal degree in co-relation 836. Up to 124 conditions per place. [2022-09-20 22:37:47,424 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 43 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2022-09-20 22:37:47,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 146 transitions, 483 flow [2022-09-20 22:37:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:37:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:37:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2022-09-20 22:37:47,433 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7510489510489511 [2022-09-20 22:37:47,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2022-09-20 22:37:47,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2022-09-20 22:37:47,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:47,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2022-09-20 22:37:47,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 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) [2022-09-20 22:37:47,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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) [2022-09-20 22:37:47,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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) [2022-09-20 22:37:47,438 INFO L175 Difference]: Start difference. First operand has 139 places, 138 transitions, 393 flow. Second operand 5 states and 537 transitions. [2022-09-20 22:37:47,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 146 transitions, 483 flow [2022-09-20 22:37:47,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 146 transitions, 465 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-09-20 22:37:47,450 INFO L231 Difference]: Finished difference. Result has 139 places, 133 transitions, 362 flow [2022-09-20 22:37:47,450 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=139, PETRI_TRANSITIONS=133} [2022-09-20 22:37:47,451 INFO L287 CegarLoopForPetriNet]: 128 programPoint places, 11 predicate places. [2022-09-20 22:37:47,451 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 362 flow [2022-09-20 22:37:47,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 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) [2022-09-20 22:37:47,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:47,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:47,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:37:47,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-09-20 22:37:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:47,454 INFO L85 PathProgramCache]: Analyzing trace with hash -781067283, now seen corresponding path program 1 times [2022-09-20 22:37:47,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:47,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480937080] [2022-09-20 22:37:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:47,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:47,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480937080] [2022-09-20 22:37:47,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480937080] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:47,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:47,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:37:47,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407705154] [2022-09-20 22:37:47,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:47,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:37:47,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:37:47,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:37:47,621 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 143 [2022-09-20 22:37:47,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 107.5) internal successors, (860), 8 states have internal predecessors, (860), 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) [2022-09-20 22:37:47,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:47,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 143 [2022-09-20 22:37:47,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:47,869 INFO L130 PetriNetUnfolder]: 20/344 cut-off events. [2022-09-20 22:37:47,869 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-09-20 22:37:47,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 344 events. 20/344 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1046 event pairs, 1 based on Foata normal form. 8/352 useless extension candidates. Maximal degree in co-relation 494. Up to 23 conditions per place. [2022-09-20 22:37:47,871 INFO L137 encePairwiseOnDemand]: 123/143 looper letters, 22 selfloop transitions, 31 changer transitions 10/156 dead transitions. [2022-09-20 22:37:47,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 156 transitions, 554 flow [2022-09-20 22:37:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:37:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:37:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1965 transitions. [2022-09-20 22:37:47,877 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7634032634032634 [2022-09-20 22:37:47,877 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1965 transitions. [2022-09-20 22:37:47,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1965 transitions. [2022-09-20 22:37:47,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:47,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1965 transitions. [2022-09-20 22:37:47,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 109.16666666666667) internal successors, (1965), 18 states have internal predecessors, (1965), 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) [2022-09-20 22:37:47,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 143.0) internal successors, (2717), 19 states have internal predecessors, (2717), 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) [2022-09-20 22:37:47,890 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 143.0) internal successors, (2717), 19 states have internal predecessors, (2717), 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) [2022-09-20 22:37:47,891 INFO L175 Difference]: Start difference. First operand has 139 places, 133 transitions, 362 flow. Second operand 18 states and 1965 transitions. [2022-09-20 22:37:47,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 156 transitions, 554 flow [2022-09-20 22:37:47,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 547 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:37:47,901 INFO L231 Difference]: Finished difference. Result has 155 places, 136 transitions, 465 flow [2022-09-20 22:37:47,901 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=465, PETRI_PLACES=155, PETRI_TRANSITIONS=136} [2022-09-20 22:37:47,903 INFO L287 CegarLoopForPetriNet]: 128 programPoint places, 27 predicate places. [2022-09-20 22:37:47,903 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 136 transitions, 465 flow [2022-09-20 22:37:47,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.5) internal successors, (860), 8 states have internal predecessors, (860), 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) [2022-09-20 22:37:47,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:47,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:47,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:37:47,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-09-20 22:37:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:47,905 INFO L85 PathProgramCache]: Analyzing trace with hash 871628872, now seen corresponding path program 1 times [2022-09-20 22:37:47,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:47,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817374524] [2022-09-20 22:37:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:48,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:48,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817374524] [2022-09-20 22:37:48,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817374524] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:48,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:48,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:37:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819106885] [2022-09-20 22:37:48,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:48,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:37:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:48,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:37:48,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:37:48,021 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 143 [2022-09-20 22:37:48,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 136 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2022-09-20 22:37:48,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:48,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 143 [2022-09-20 22:37:48,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:48,130 INFO L130 PetriNetUnfolder]: 65/535 cut-off events. [2022-09-20 22:37:48,130 INFO L131 PetriNetUnfolder]: For 306/307 co-relation queries the response was YES. [2022-09-20 22:37:48,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 535 events. 65/535 cut-off events. For 306/307 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2427 event pairs, 13 based on Foata normal form. 7/538 useless extension candidates. Maximal degree in co-relation 959. Up to 75 conditions per place. [2022-09-20 22:37:48,133 INFO L137 encePairwiseOnDemand]: 132/143 looper letters, 28 selfloop transitions, 23 changer transitions 12/164 dead transitions. [2022-09-20 22:37:48,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 164 transitions, 709 flow [2022-09-20 22:37:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:37:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:37:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1025 transitions. [2022-09-20 22:37:48,136 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7964257964257965 [2022-09-20 22:37:48,136 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1025 transitions. [2022-09-20 22:37:48,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1025 transitions. [2022-09-20 22:37:48,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:48,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1025 transitions. [2022-09-20 22:37:48,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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) [2022-09-20 22:37:48,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 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) [2022-09-20 22:37:48,142 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 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) [2022-09-20 22:37:48,142 INFO L175 Difference]: Start difference. First operand has 155 places, 136 transitions, 465 flow. Second operand 9 states and 1025 transitions. [2022-09-20 22:37:48,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 164 transitions, 709 flow [2022-09-20 22:37:48,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 164 transitions, 628 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-09-20 22:37:48,147 INFO L231 Difference]: Finished difference. Result has 155 places, 142 transitions, 511 flow [2022-09-20 22:37:48,148 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=155, PETRI_TRANSITIONS=142} [2022-09-20 22:37:48,148 INFO L287 CegarLoopForPetriNet]: 128 programPoint places, 27 predicate places. [2022-09-20 22:37:48,149 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 142 transitions, 511 flow [2022-09-20 22:37:48,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2022-09-20 22:37:48,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:48,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:48,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:37:48,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-09-20 22:37:48,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:48,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1653100892, now seen corresponding path program 1 times [2022-09-20 22:37:48,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:48,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179780930] [2022-09-20 22:37:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:48,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179780930] [2022-09-20 22:37:48,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179780930] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:48,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:48,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:37:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211318714] [2022-09-20 22:37:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:37:48,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:37:48,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:37:48,195 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 143 [2022-09-20 22:37:48,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 142 transitions, 511 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2022-09-20 22:37:48,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:48,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 143 [2022-09-20 22:37:48,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:48,294 INFO L130 PetriNetUnfolder]: 26/406 cut-off events. [2022-09-20 22:37:48,295 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-09-20 22:37:48,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 406 events. 26/406 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1627 event pairs, 12 based on Foata normal form. 18/424 useless extension candidates. Maximal degree in co-relation 720. Up to 73 conditions per place. [2022-09-20 22:37:48,296 INFO L137 encePairwiseOnDemand]: 126/143 looper letters, 20 selfloop transitions, 16 changer transitions 5/145 dead transitions. [2022-09-20 22:37:48,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 145 transitions, 563 flow [2022-09-20 22:37:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:37:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:37:48,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-09-20 22:37:48,298 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8251748251748252 [2022-09-20 22:37:48,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-09-20 22:37:48,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-09-20 22:37:48,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:48,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-09-20 22:37:48,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2022-09-20 22:37:48,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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) [2022-09-20 22:37:48,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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) [2022-09-20 22:37:48,301 INFO L175 Difference]: Start difference. First operand has 155 places, 142 transitions, 511 flow. Second operand 3 states and 354 transitions. [2022-09-20 22:37:48,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 145 transitions, 563 flow [2022-09-20 22:37:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 551 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-20 22:37:48,305 INFO L231 Difference]: Finished difference. Result has 152 places, 137 transitions, 503 flow [2022-09-20 22:37:48,305 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=503, PETRI_PLACES=152, PETRI_TRANSITIONS=137} [2022-09-20 22:37:48,305 INFO L287 CegarLoopForPetriNet]: 128 programPoint places, 24 predicate places. [2022-09-20 22:37:48,306 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 137 transitions, 503 flow [2022-09-20 22:37:48,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2022-09-20 22:37:48,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:48,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:48,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:37:48,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-09-20 22:37:48,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:48,307 INFO L85 PathProgramCache]: Analyzing trace with hash 391972139, now seen corresponding path program 1 times [2022-09-20 22:37:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:48,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712199505] [2022-09-20 22:37:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:48,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:48,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712199505] [2022-09-20 22:37:48,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712199505] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:48,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:48,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:37:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675267546] [2022-09-20 22:37:48,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:48,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:37:48,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:37:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:37:48,500 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 143 [2022-09-20 22:37:48,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 137 transitions, 503 flow. Second operand has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 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) [2022-09-20 22:37:48,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:48,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 143 [2022-09-20 22:37:48,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:48,637 INFO L130 PetriNetUnfolder]: 24/353 cut-off events. [2022-09-20 22:37:48,638 INFO L131 PetriNetUnfolder]: For 192/196 co-relation queries the response was YES. [2022-09-20 22:37:48,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 353 events. 24/353 cut-off events. For 192/196 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1226 event pairs, 5 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 715. Up to 92 conditions per place. [2022-09-20 22:37:48,640 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 41 selfloop transitions, 6 changer transitions 16/134 dead transitions. [2022-09-20 22:37:48,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 134 transitions, 588 flow [2022-09-20 22:37:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:37:48,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:37:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2022-09-20 22:37:48,643 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2022-09-20 22:37:48,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2022-09-20 22:37:48,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2022-09-20 22:37:48,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:48,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2022-09-20 22:37:48,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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) [2022-09-20 22:37:48,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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) [2022-09-20 22:37:48,646 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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) [2022-09-20 22:37:48,647 INFO L175 Difference]: Start difference. First operand has 152 places, 137 transitions, 503 flow. Second operand 6 states and 594 transitions. [2022-09-20 22:37:48,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 134 transitions, 588 flow [2022-09-20 22:37:48,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 134 transitions, 543 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-20 22:37:48,651 INFO L231 Difference]: Finished difference. Result has 141 places, 113 transitions, 359 flow [2022-09-20 22:37:48,652 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=141, PETRI_TRANSITIONS=113} [2022-09-20 22:37:48,654 INFO L287 CegarLoopForPetriNet]: 128 programPoint places, 13 predicate places. [2022-09-20 22:37:48,654 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 113 transitions, 359 flow [2022-09-20 22:37:48,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 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) [2022-09-20 22:37:48,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:48,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:48,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:37:48,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-09-20 22:37:48,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:48,657 INFO L85 PathProgramCache]: Analyzing trace with hash 747859284, now seen corresponding path program 1 times [2022-09-20 22:37:48,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:48,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185069853] [2022-09-20 22:37:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:48,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:48,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:48,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185069853] [2022-09-20 22:37:48,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185069853] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:48,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:48,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:37:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252487759] [2022-09-20 22:37:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:48,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:37:48,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:48,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:37:48,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:37:48,804 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 143 [2022-09-20 22:37:48,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 113 transitions, 359 flow. Second operand has 8 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 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) [2022-09-20 22:37:48,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:48,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 143 [2022-09-20 22:37:48,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:48,918 INFO L130 PetriNetUnfolder]: 11/225 cut-off events. [2022-09-20 22:37:48,919 INFO L131 PetriNetUnfolder]: For 93/95 co-relation queries the response was YES. [2022-09-20 22:37:48,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 225 events. 11/225 cut-off events. For 93/95 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 498 event pairs, 0 based on Foata normal form. 11/236 useless extension candidates. Maximal degree in co-relation 439. Up to 39 conditions per place. [2022-09-20 22:37:48,920 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 36 selfloop transitions, 8 changer transitions 2/115 dead transitions. [2022-09-20 22:37:48,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 115 transitions, 458 flow [2022-09-20 22:37:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:37:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:37:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 589 transitions. [2022-09-20 22:37:48,923 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6864801864801865 [2022-09-20 22:37:48,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 589 transitions. [2022-09-20 22:37:48,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 589 transitions. [2022-09-20 22:37:48,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:48,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 589 transitions. [2022-09-20 22:37:48,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:37:48,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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) [2022-09-20 22:37:48,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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) [2022-09-20 22:37:48,927 INFO L175 Difference]: Start difference. First operand has 141 places, 113 transitions, 359 flow. Second operand 6 states and 589 transitions. [2022-09-20 22:37:48,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 115 transitions, 458 flow [2022-09-20 22:37:48,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 115 transitions, 405 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-09-20 22:37:48,930 INFO L231 Difference]: Finished difference. Result has 124 places, 110 transitions, 310 flow [2022-09-20 22:37:48,930 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=124, PETRI_TRANSITIONS=110} [2022-09-20 22:37:48,931 INFO L287 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2022-09-20 22:37:48,931 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 110 transitions, 310 flow [2022-09-20 22:37:48,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 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) [2022-09-20 22:37:48,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:48,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:48,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:37:48,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-09-20 22:37:48,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:48,932 INFO L85 PathProgramCache]: Analyzing trace with hash 924598435, now seen corresponding path program 1 times [2022-09-20 22:37:48,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:48,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170327954] [2022-09-20 22:37:48,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:48,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:49,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:49,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170327954] [2022-09-20 22:37:49,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170327954] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:49,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:49,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:37:49,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978130881] [2022-09-20 22:37:49,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:49,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:37:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:49,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:37:49,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:37:49,028 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 143 [2022-09-20 22:37:49,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 110 transitions, 310 flow. Second operand has 8 states, 8 states have (on average 108.5) internal successors, (868), 8 states have internal predecessors, (868), 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) [2022-09-20 22:37:49,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:49,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 143 [2022-09-20 22:37:49,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:49,165 INFO L130 PetriNetUnfolder]: 4/191 cut-off events. [2022-09-20 22:37:49,166 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-09-20 22:37:49,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 191 events. 4/191 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 333 event pairs, 1 based on Foata normal form. 2/193 useless extension candidates. Maximal degree in co-relation 277. Up to 19 conditions per place. [2022-09-20 22:37:49,166 INFO L137 encePairwiseOnDemand]: 129/143 looper letters, 0 selfloop transitions, 0 changer transitions 117/117 dead transitions. [2022-09-20 22:37:49,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 117 transitions, 388 flow [2022-09-20 22:37:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:37:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:37:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1726 transitions. [2022-09-20 22:37:49,171 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7543706293706294 [2022-09-20 22:37:49,171 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1726 transitions. [2022-09-20 22:37:49,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1726 transitions. [2022-09-20 22:37:49,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:49,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1726 transitions. [2022-09-20 22:37:49,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 107.875) internal successors, (1726), 16 states have internal predecessors, (1726), 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) [2022-09-20 22:37:49,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 143.0) internal successors, (2431), 17 states have internal predecessors, (2431), 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) [2022-09-20 22:37:49,180 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 143.0) internal successors, (2431), 17 states have internal predecessors, (2431), 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) [2022-09-20 22:37:49,180 INFO L175 Difference]: Start difference. First operand has 124 places, 110 transitions, 310 flow. Second operand 16 states and 1726 transitions. [2022-09-20 22:37:49,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 117 transitions, 388 flow [2022-09-20 22:37:49,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 117 transitions, 374 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-20 22:37:49,183 INFO L231 Difference]: Finished difference. Result has 132 places, 0 transitions, 0 flow [2022-09-20 22:37:49,183 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=132, PETRI_TRANSITIONS=0} [2022-09-20 22:37:49,183 INFO L287 CegarLoopForPetriNet]: 128 programPoint places, 4 predicate places. [2022-09-20 22:37:49,183 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 0 transitions, 0 flow [2022-09-20 22:37:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.5) internal successors, (868), 8 states have internal predecessors, (868), 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) [2022-09-20 22:37:49,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-09-20 22:37:49,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-09-20 22:37:49,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-09-20 22:37:49,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-09-20 22:37:49,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-09-20 22:37:49,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:37:49,188 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:49,190 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 22:37:49,190 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 22:37:49,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 10:37:49 BasicIcfg [2022-09-20 22:37:49,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 22:37:49,195 INFO L158 Benchmark]: Toolchain (without parser) took 4246.09ms. Allocated memory was 188.7MB in the beginning and 313.5MB in the end (delta: 124.8MB). Free memory was 154.9MB in the beginning and 106.1MB in the end (delta: 48.8MB). Peak memory consumption was 174.1MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,195 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:37:49,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.47ms. Allocated memory was 188.7MB in the beginning and 313.5MB in the end (delta: 124.8MB). Free memory was 154.6MB in the beginning and 273.0MB in the end (delta: -118.5MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.91ms. Allocated memory is still 313.5MB. Free memory was 273.0MB in the beginning and 270.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,196 INFO L158 Benchmark]: Boogie Preprocessor took 34.24ms. Allocated memory is still 313.5MB. Free memory was 270.9MB in the beginning and 269.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,196 INFO L158 Benchmark]: RCFGBuilder took 460.48ms. Allocated memory is still 313.5MB. Free memory was 269.5MB in the beginning and 254.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,197 INFO L158 Benchmark]: TraceAbstraction took 3226.73ms. Allocated memory is still 313.5MB. Free memory was 254.2MB in the beginning and 106.1MB in the end (delta: 148.1MB). Peak memory consumption was 149.1MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 459.47ms. Allocated memory was 188.7MB in the beginning and 313.5MB in the end (delta: 124.8MB). Free memory was 154.6MB in the beginning and 273.0MB in the end (delta: -118.5MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.91ms. Allocated memory is still 313.5MB. Free memory was 273.0MB in the beginning and 270.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.24ms. Allocated memory is still 313.5MB. Free memory was 270.9MB in the beginning and 269.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 460.48ms. Allocated memory is still 313.5MB. Free memory was 269.5MB in the beginning and 254.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3226.73ms. Allocated memory is still 313.5MB. Free memory was 254.2MB in the beginning and 106.1MB in the end (delta: 148.1MB). Peak memory consumption was 149.1MB. 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 - 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, 175 locations, 5 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: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 289 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 289 mSDsluCounter, 349 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 247 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 610 IncrementalHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 118 mSDtfsCounter, 610 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=511occurred in iteration=4, InterpolantAutomatonStates: 72, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 2604 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 22:37:49,243 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...