/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:31:12,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:31:12,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:31:12,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:31:12,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:31:12,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:31:12,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:31:12,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:31:12,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:31:12,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:31:12,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:31:12,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:31:12,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:31:12,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:31:12,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:31:12,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:31:12,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:31:12,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:31:12,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:31:12,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:31:12,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:31:12,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:31:12,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:31:12,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:31:12,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:31:12,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:31:12,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:31:12,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:31:12,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:31:12,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:31:12,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:31:12,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:31:12,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:31:12,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:31:12,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:31:12,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:31:12,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:31:12,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:31:12,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:31:12,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:31:12,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:31:12,891 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-VariableLbe.epf [2023-01-28 02:31:12,909 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:31:12,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:31:12,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:31:12,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:31:12,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:31:12,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:31:12,911 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:31:12,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:31:12,911 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:31:12,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:31:12,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:31:12,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:31:12,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:31:12,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:31:12,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:31:12,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:31:12,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:31:12,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:31:12,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:31:12,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:31:12,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:31:12,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:31:12,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:31:12,914 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:31:13,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:31:13,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:31:13,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:31:13,151 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:31:13,152 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:31:13,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-01-28 02:31:14,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:31:14,446 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:31:14,446 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-01-28 02:31:14,451 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f6e36ff/edfed9d6db7f4ac288d4e02c24eb13b1/FLAGc87838656 [2023-01-28 02:31:14,463 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f6e36ff/edfed9d6db7f4ac288d4e02c24eb13b1 [2023-01-28 02:31:14,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:31:14,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:31:14,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:31:14,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:31:14,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:31:14,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1f6bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14, skipping insertion in model container [2023-01-28 02:31:14,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:31:14,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:31:14,682 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-01-28 02:31:14,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:31:14,711 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:31:14,748 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-01-28 02:31:14,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:31:14,770 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:31:14,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14 WrapperNode [2023-01-28 02:31:14,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:31:14,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:31:14,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:31:14,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:31:14,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,831 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 178 [2023-01-28 02:31:14,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:31:14,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:31:14,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:31:14,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:31:14,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:31:14,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:31:14,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:31:14,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:31:14,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (1/1) ... [2023-01-28 02:31:14,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:31:14,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:14,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 02:31:14,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:31:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:31:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:31:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:31:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:31:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:31:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:31:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:31:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:31:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:31:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:31:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:31:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:31:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:31:14,990 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:31:15,096 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:31:15,098 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:31:15,396 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:31:15,404 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:31:15,405 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 02:31:15,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:31:15 BoogieIcfgContainer [2023-01-28 02:31:15,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:31:15,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:31:15,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:31:15,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:31:15,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:31:14" (1/3) ... [2023-01-28 02:31:15,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f487e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:31:15, skipping insertion in model container [2023-01-28 02:31:15,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:14" (2/3) ... [2023-01-28 02:31:15,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f487e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:31:15, skipping insertion in model container [2023-01-28 02:31:15,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:31:15" (3/3) ... [2023-01-28 02:31:15,413 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-01-28 02:31:15,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:31:15,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:31:15,426 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:31:15,517 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 02:31:15,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 199 transitions, 414 flow [2023-01-28 02:31:15,615 INFO L130 PetriNetUnfolder]: 19/197 cut-off events. [2023-01-28 02:31:15,615 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:31:15,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 19/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-01-28 02:31:15,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 199 transitions, 414 flow [2023-01-28 02:31:15,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 189 transitions, 390 flow [2023-01-28 02:31:15,634 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:31:15,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 189 transitions, 390 flow [2023-01-28 02:31:15,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 189 transitions, 390 flow [2023-01-28 02:31:15,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 189 transitions, 390 flow [2023-01-28 02:31:15,705 INFO L130 PetriNetUnfolder]: 19/189 cut-off events. [2023-01-28 02:31:15,705 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:31:15,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 189 events. 19/189 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-01-28 02:31:15,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 3332 [2023-01-28 02:31:20,533 INFO L134 LiptonReduction]: Checked pairs total: 3976 [2023-01-28 02:31:20,533 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-01-28 02:31:20,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:31:20,550 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;@64a8e2af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:31:20,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 02:31:20,557 INFO L130 PetriNetUnfolder]: 6/24 cut-off events. [2023-01-28 02:31:20,558 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:31:20,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:20,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:20,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:20,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1174210109, now seen corresponding path program 1 times [2023-01-28 02:31:20,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:20,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081647890] [2023-01-28 02:31:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:20,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081647890] [2023-01-28 02:31:20,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081647890] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:20,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:20,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:31:20,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969500748] [2023-01-28 02:31:20,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:20,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:31:20,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:31:20,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:31:20,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-28 02:31:20,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:20,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-28 02:31:21,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:21,078 INFO L130 PetriNetUnfolder]: 91/155 cut-off events. [2023-01-28 02:31:21,078 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-28 02:31:21,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 155 events. 91/155 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 377 event pairs, 51 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 275. Up to 151 conditions per place. [2023-01-28 02:31:21,080 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 22 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-28 02:31:21,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 118 flow [2023-01-28 02:31:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:31:21,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:31:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-01-28 02:31:21,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41544715447154473 [2023-01-28 02:31:21,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-01-28 02:31:21,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-01-28 02:31:21,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:21,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-01-28 02:31:21,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,115 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 3 states and 511 transitions. [2023-01-28 02:31:21,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 118 flow [2023-01-28 02:31:21,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:21,120 INFO L231 Difference]: Finished difference. Result has 25 places, 27 transitions, 76 flow [2023-01-28 02:31:21,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2023-01-28 02:31:21,125 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-28 02:31:21,125 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 76 flow [2023-01-28 02:31:21,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:21,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:31:21,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:21,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 505710322, now seen corresponding path program 1 times [2023-01-28 02:31:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778001393] [2023-01-28 02:31:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:21,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:21,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778001393] [2023-01-28 02:31:21,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778001393] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:21,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898686450] [2023-01-28 02:31:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:21,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:21,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:21,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:21,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:31:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:21,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 02:31:21,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:21,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898686450] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:21,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:21,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-01-28 02:31:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063185419] [2023-01-28 02:31:21,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:21,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:31:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:21,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:31:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:31:21,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-28 02:31:21,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 163.875) internal successors, (1311), 8 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:21,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-28 02:31:21,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:21,622 INFO L130 PetriNetUnfolder]: 91/161 cut-off events. [2023-01-28 02:31:21,622 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:31:21,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 161 events. 91/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 378 event pairs, 51 based on Foata normal form. 3/123 useless extension candidates. Maximal degree in co-relation 315. Up to 151 conditions per place. [2023-01-28 02:31:21,624 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 22 selfloop transitions, 10 changer transitions 0/33 dead transitions. [2023-01-28 02:31:21,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 164 flow [2023-01-28 02:31:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:31:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:31:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1004 transitions. [2023-01-28 02:31:21,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.408130081300813 [2023-01-28 02:31:21,627 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1004 transitions. [2023-01-28 02:31:21,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1004 transitions. [2023-01-28 02:31:21,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:21,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1004 transitions. [2023-01-28 02:31:21,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.33333333333334) internal successors, (1004), 6 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,634 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,634 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 76 flow. Second operand 6 states and 1004 transitions. [2023-01-28 02:31:21,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 164 flow [2023-01-28 02:31:21,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:31:21,636 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 138 flow [2023-01-28 02:31:21,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-01-28 02:31:21,647 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-01-28 02:31:21,648 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 138 flow [2023-01-28 02:31:21,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 163.875) internal successors, (1311), 8 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:21,649 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:21,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 02:31:21,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:21,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:21,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1388696397, now seen corresponding path program 2 times [2023-01-28 02:31:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:21,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355787766] [2023-01-28 02:31:21,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:21,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:31:22,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:22,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355787766] [2023-01-28 02:31:22,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355787766] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:22,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113279815] [2023-01-28 02:31:22,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:31:22,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:22,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:22,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:22,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:31:22,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:31:22,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:22,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:31:22,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 02:31:22,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:22,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113279815] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:22,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:22,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-28 02:31:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349550059] [2023-01-28 02:31:22,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:22,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:31:22,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:31:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:31:22,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-28 02:31:22,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:22,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-28 02:31:22,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:22,372 INFO L130 PetriNetUnfolder]: 195/342 cut-off events. [2023-01-28 02:31:22,372 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 02:31:22,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 342 events. 195/342 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1154 event pairs, 60 based on Foata normal form. 4/263 useless extension candidates. Maximal degree in co-relation 679. Up to 166 conditions per place. [2023-01-28 02:31:22,378 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 53 selfloop transitions, 5 changer transitions 2/60 dead transitions. [2023-01-28 02:31:22,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 60 transitions, 318 flow [2023-01-28 02:31:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:31:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:31:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 908 transitions. [2023-01-28 02:31:22,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429268292682927 [2023-01-28 02:31:22,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 908 transitions. [2023-01-28 02:31:22,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 908 transitions. [2023-01-28 02:31:22,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:22,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 908 transitions. [2023-01-28 02:31:22,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,387 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,387 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 138 flow. Second operand 5 states and 908 transitions. [2023-01-28 02:31:22,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 60 transitions, 318 flow [2023-01-28 02:31:22,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 60 transitions, 302 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 02:31:22,391 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 146 flow [2023-01-28 02:31:22,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-01-28 02:31:22,392 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-01-28 02:31:22,392 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 146 flow [2023-01-28 02:31:22,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:22,393 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:22,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:22,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 02:31:22,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:22,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash -860076919, now seen corresponding path program 3 times [2023-01-28 02:31:22,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:22,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527721655] [2023-01-28 02:31:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:31:22,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527721655] [2023-01-28 02:31:22,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527721655] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933850556] [2023-01-28 02:31:22,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:31:22,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:22,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:22,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:22,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:31:22,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:31:22,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:22,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:31:22,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 02:31:22,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933850556] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:22,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-28 02:31:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205848978] [2023-01-28 02:31:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:31:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:31:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:31:22,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-28 02:31:22,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:22,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-28 02:31:22,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:23,015 INFO L130 PetriNetUnfolder]: 239/416 cut-off events. [2023-01-28 02:31:23,015 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-01-28 02:31:23,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 416 events. 239/416 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1450 event pairs, 58 based on Foata normal form. 4/351 useless extension candidates. Maximal degree in co-relation 922. Up to 309 conditions per place. [2023-01-28 02:31:23,017 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 51 selfloop transitions, 4 changer transitions 3/58 dead transitions. [2023-01-28 02:31:23,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 324 flow [2023-01-28 02:31:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:31:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:31:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 733 transitions. [2023-01-28 02:31:23,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44695121951219513 [2023-01-28 02:31:23,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 733 transitions. [2023-01-28 02:31:23,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 733 transitions. [2023-01-28 02:31:23,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:23,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 733 transitions. [2023-01-28 02:31:23,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,025 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,025 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 146 flow. Second operand 4 states and 733 transitions. [2023-01-28 02:31:23,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 324 flow [2023-01-28 02:31:23,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 02:31:23,028 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 180 flow [2023-01-28 02:31:23,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-01-28 02:31:23,029 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-28 02:31:23,029 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 180 flow [2023-01-28 02:31:23,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:23,030 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:23,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:23,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:23,239 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:23,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2094169333, now seen corresponding path program 4 times [2023-01-28 02:31:23,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:23,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324501879] [2023-01-28 02:31:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:23,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:31:23,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:23,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324501879] [2023-01-28 02:31:23,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324501879] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:23,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015130014] [2023-01-28 02:31:23,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:31:23,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:23,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:23,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:23,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:31:23,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:31:23,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:23,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:31:23,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 02:31:23,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:23,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015130014] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:23,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:23,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-28 02:31:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693912966] [2023-01-28 02:31:23,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:23,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:31:23,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:23,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:31:23,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:31:23,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-28 02:31:23,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:23,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-28 02:31:23,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:23,582 INFO L130 PetriNetUnfolder]: 229/396 cut-off events. [2023-01-28 02:31:23,583 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-01-28 02:31:23,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 396 events. 229/396 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1357 event pairs, 64 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 951. Up to 189 conditions per place. [2023-01-28 02:31:23,585 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 54 selfloop transitions, 7 changer transitions 3/64 dead transitions. [2023-01-28 02:31:23,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 377 flow [2023-01-28 02:31:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:31:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:31:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 737 transitions. [2023-01-28 02:31:23,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44939024390243903 [2023-01-28 02:31:23,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 737 transitions. [2023-01-28 02:31:23,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 737 transitions. [2023-01-28 02:31:23,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:23,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 737 transitions. [2023-01-28 02:31:23,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,593 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,593 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 180 flow. Second operand 4 states and 737 transitions. [2023-01-28 02:31:23,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 377 flow [2023-01-28 02:31:23,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 373 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 02:31:23,596 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 205 flow [2023-01-28 02:31:23,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-01-28 02:31:23,597 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-01-28 02:31:23,597 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 205 flow [2023-01-28 02:31:23,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:23,598 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:23,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:23,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:23,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:23,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1210593385, now seen corresponding path program 1 times [2023-01-28 02:31:23,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:23,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951775701] [2023-01-28 02:31:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:23,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:31:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951775701] [2023-01-28 02:31:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951775701] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917097686] [2023-01-28 02:31:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:23,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:23,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:23,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 02:31:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 02:31:24,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:31:24,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:31:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917097686] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:24,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-28 02:31:24,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012041237] [2023-01-28 02:31:24,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:24,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 02:31:24,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 02:31:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-01-28 02:31:24,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-28 02:31:24,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 205 flow. Second operand has 17 states, 17 states have (on average 163.0) internal successors, (2771), 17 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:24,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-28 02:31:24,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:24,318 INFO L130 PetriNetUnfolder]: 198/356 cut-off events. [2023-01-28 02:31:24,318 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-01-28 02:31:24,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 356 events. 198/356 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1206 event pairs, 114 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 861. Up to 332 conditions per place. [2023-01-28 02:31:24,320 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 29 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2023-01-28 02:31:24,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 299 flow [2023-01-28 02:31:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:31:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:31:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1163 transitions. [2023-01-28 02:31:24,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052264808362369 [2023-01-28 02:31:24,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1163 transitions. [2023-01-28 02:31:24,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1163 transitions. [2023-01-28 02:31:24,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:24,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1163 transitions. [2023-01-28 02:31:24,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,331 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 205 flow. Second operand 7 states and 1163 transitions. [2023-01-28 02:31:24,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 299 flow [2023-01-28 02:31:24,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 287 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 02:31:24,333 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 239 flow [2023-01-28 02:31:24,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-01-28 02:31:24,334 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2023-01-28 02:31:24,334 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 239 flow [2023-01-28 02:31:24,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 163.0) internal successors, (2771), 17 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:24,335 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:24,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:24,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:24,541 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:24,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:24,542 INFO L85 PathProgramCache]: Analyzing trace with hash 269385230, now seen corresponding path program 2 times [2023-01-28 02:31:24,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:24,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331696561] [2023-01-28 02:31:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:24,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331696561] [2023-01-28 02:31:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331696561] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99266504] [2023-01-28 02:31:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:25,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:25,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:25,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:25,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 239 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:25,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:25,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:25,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:25,942 INFO L130 PetriNetUnfolder]: 307/548 cut-off events. [2023-01-28 02:31:25,943 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-01-28 02:31:25,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 548 events. 307/548 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2154 event pairs, 41 based on Foata normal form. 13/468 useless extension candidates. Maximal degree in co-relation 1270. Up to 130 conditions per place. [2023-01-28 02:31:25,946 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 94 selfloop transitions, 28 changer transitions 10/132 dead transitions. [2023-01-28 02:31:25,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 132 transitions, 747 flow [2023-01-28 02:31:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:31:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:31:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1834 transitions. [2023-01-28 02:31:25,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34409005628517825 [2023-01-28 02:31:25,951 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1834 transitions. [2023-01-28 02:31:25,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1834 transitions. [2023-01-28 02:31:25,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:25,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1834 transitions. [2023-01-28 02:31:25,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 141.07692307692307) internal successors, (1834), 13 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:25,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:25,965 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:25,965 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 239 flow. Second operand 13 states and 1834 transitions. [2023-01-28 02:31:25,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 132 transitions, 747 flow [2023-01-28 02:31:25,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 132 transitions, 723 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:25,970 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 423 flow [2023-01-28 02:31:25,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=423, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-01-28 02:31:25,971 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-01-28 02:31:25,973 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 423 flow [2023-01-28 02:31:25,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:25,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:25,974 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:25,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 02:31:25,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:25,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1843151562, now seen corresponding path program 3 times [2023-01-28 02:31:25,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:25,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3684327] [2023-01-28 02:31:25,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:25,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:27,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:31:27,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:27,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3684327] [2023-01-28 02:31:27,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3684327] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:27,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951195468] [2023-01-28 02:31:27,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:31:27,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:27,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:27,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:27,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 02:31:27,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:31:27,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:27,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 02:31:27,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:27,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:27,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951195468] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:27,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:27,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-28 02:31:27,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146165337] [2023-01-28 02:31:27,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:27,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:27,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-01-28 02:31:27,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:27,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 423 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:27,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:27,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:27,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:28,123 INFO L130 PetriNetUnfolder]: 323/572 cut-off events. [2023-01-28 02:31:28,124 INFO L131 PetriNetUnfolder]: For 660/660 co-relation queries the response was YES. [2023-01-28 02:31:28,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 572 events. 323/572 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2234 event pairs, 51 based on Foata normal form. 7/579 useless extension candidates. Maximal degree in co-relation 1867. Up to 179 conditions per place. [2023-01-28 02:31:28,128 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 78 selfloop transitions, 24 changer transitions 9/111 dead transitions. [2023-01-28 02:31:28,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 111 transitions, 811 flow [2023-01-28 02:31:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1271 transitions. [2023-01-28 02:31:28,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2023-01-28 02:31:28,132 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1271 transitions. [2023-01-28 02:31:28,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1271 transitions. [2023-01-28 02:31:28,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:28,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1271 transitions. [2023-01-28 02:31:28,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.22222222222223) internal successors, (1271), 9 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:28,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:28,146 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:28,146 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 423 flow. Second operand 9 states and 1271 transitions. [2023-01-28 02:31:28,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 111 transitions, 811 flow [2023-01-28 02:31:28,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 800 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 02:31:28,153 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 525 flow [2023-01-28 02:31:28,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-01-28 02:31:28,154 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-01-28 02:31:28,154 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 525 flow [2023-01-28 02:31:28,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:28,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:28,155 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:28,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:28,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:28,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:28,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:28,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1894417440, now seen corresponding path program 4 times [2023-01-28 02:31:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:28,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158737682] [2023-01-28 02:31:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:28,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:31:29,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158737682] [2023-01-28 02:31:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158737682] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792096989] [2023-01-28 02:31:29,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:31:29,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:29,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:29,733 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:29,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 02:31:29,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:31:29,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:29,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 02:31:29,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:30,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:30,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792096989] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:30,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:30,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 22 [2023-01-28 02:31:30,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008277355] [2023-01-28 02:31:30,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:30,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:31:30,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:30,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:31:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-01-28 02:31:30,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 410 [2023-01-28 02:31:30,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 140.375) internal successors, (1123), 8 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:30,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:30,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 410 [2023-01-28 02:31:30,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:30,314 INFO L130 PetriNetUnfolder]: 324/583 cut-off events. [2023-01-28 02:31:30,314 INFO L131 PetriNetUnfolder]: For 1287/1287 co-relation queries the response was YES. [2023-01-28 02:31:30,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 583 events. 324/583 cut-off events. For 1287/1287 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2371 event pairs, 79 based on Foata normal form. 7/590 useless extension candidates. Maximal degree in co-relation 2254. Up to 204 conditions per place. [2023-01-28 02:31:30,319 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 83 selfloop transitions, 23 changer transitions 6/112 dead transitions. [2023-01-28 02:31:30,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 908 flow [2023-01-28 02:31:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:31:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:31:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1183 transitions. [2023-01-28 02:31:30,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36067073170731706 [2023-01-28 02:31:30,323 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1183 transitions. [2023-01-28 02:31:30,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1183 transitions. [2023-01-28 02:31:30,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:30,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1183 transitions. [2023-01-28 02:31:30,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.875) internal successors, (1183), 8 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:30,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:30,331 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:30,331 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 525 flow. Second operand 8 states and 1183 transitions. [2023-01-28 02:31:30,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 908 flow [2023-01-28 02:31:30,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 864 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:30,339 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 577 flow [2023-01-28 02:31:30,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-01-28 02:31:30,340 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2023-01-28 02:31:30,340 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 577 flow [2023-01-28 02:31:30,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.375) internal successors, (1123), 8 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:30,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:30,341 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:30,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:30,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:30,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:30,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1075580716, now seen corresponding path program 5 times [2023-01-28 02:31:30,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:30,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932939274] [2023-01-28 02:31:30,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:32,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932939274] [2023-01-28 02:31:32,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932939274] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130166744] [2023-01-28 02:31:32,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:31:32,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:32,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:32,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:32,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 02:31:32,159 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 02:31:32,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:32,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 02:31:32,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:32,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130166744] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:32,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 29 [2023-01-28 02:31:32,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696014774] [2023-01-28 02:31:32,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:32,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:32,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:32,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:31:32,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:32,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 577 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:32,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:32,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:32,906 INFO L130 PetriNetUnfolder]: 320/569 cut-off events. [2023-01-28 02:31:32,906 INFO L131 PetriNetUnfolder]: For 1731/1731 co-relation queries the response was YES. [2023-01-28 02:31:32,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 569 events. 320/569 cut-off events. For 1731/1731 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2212 event pairs, 55 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 2303. Up to 179 conditions per place. [2023-01-28 02:31:32,911 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 78 selfloop transitions, 24 changer transitions 10/112 dead transitions. [2023-01-28 02:31:32,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 955 flow [2023-01-28 02:31:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1268 transitions. [2023-01-28 02:31:32,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34363143631436316 [2023-01-28 02:31:32,915 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1268 transitions. [2023-01-28 02:31:32,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1268 transitions. [2023-01-28 02:31:32,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:32,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1268 transitions. [2023-01-28 02:31:32,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.88888888888889) internal successors, (1268), 9 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,924 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,924 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 577 flow. Second operand 9 states and 1268 transitions. [2023-01-28 02:31:32,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 955 flow [2023-01-28 02:31:32,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 112 transitions, 901 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 02:31:32,932 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 563 flow [2023-01-28 02:31:32,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=563, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2023-01-28 02:31:32,933 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2023-01-28 02:31:32,933 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 563 flow [2023-01-28 02:31:32,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:32,934 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:32,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 02:31:33,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:33,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1130882794, now seen corresponding path program 6 times [2023-01-28 02:31:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:33,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279321981] [2023-01-28 02:31:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:33,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279321981] [2023-01-28 02:31:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279321981] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:33,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:33,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:33,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134947629] [2023-01-28 02:31:33,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:33,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:33,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:33,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:33,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:33,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 563 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:33,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:33,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:33,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:34,092 INFO L130 PetriNetUnfolder]: 322/583 cut-off events. [2023-01-28 02:31:34,092 INFO L131 PetriNetUnfolder]: For 1577/1577 co-relation queries the response was YES. [2023-01-28 02:31:34,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 583 events. 322/583 cut-off events. For 1577/1577 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2368 event pairs, 37 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 2324. Up to 149 conditions per place. [2023-01-28 02:31:34,096 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 97 selfloop transitions, 31 changer transitions 9/137 dead transitions. [2023-01-28 02:31:34,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1103 flow [2023-01-28 02:31:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:31:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:31:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1962 transitions. [2023-01-28 02:31:34,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34181184668989545 [2023-01-28 02:31:34,112 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1962 transitions. [2023-01-28 02:31:34,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1962 transitions. [2023-01-28 02:31:34,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:34,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1962 transitions. [2023-01-28 02:31:34,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.14285714285714) internal successors, (1962), 14 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:34,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:34,125 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:34,125 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 563 flow. Second operand 14 states and 1962 transitions. [2023-01-28 02:31:34,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1103 flow [2023-01-28 02:31:34,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 1058 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-28 02:31:34,134 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 586 flow [2023-01-28 02:31:34,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=586, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2023-01-28 02:31:34,135 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 59 predicate places. [2023-01-28 02:31:34,135 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 586 flow [2023-01-28 02:31:34,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:34,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:34,136 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:34,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 02:31:34,136 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:34,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 583298390, now seen corresponding path program 7 times [2023-01-28 02:31:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:34,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76115002] [2023-01-28 02:31:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:34,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76115002] [2023-01-28 02:31:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76115002] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:34,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497483299] [2023-01-28 02:31:34,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:34,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:34,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:34,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:34,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 586 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:34,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:34,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:34,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:35,050 INFO L130 PetriNetUnfolder]: 319/570 cut-off events. [2023-01-28 02:31:35,051 INFO L131 PetriNetUnfolder]: For 1650/1650 co-relation queries the response was YES. [2023-01-28 02:31:35,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 570 events. 319/570 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2258 event pairs, 37 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 2325. Up to 149 conditions per place. [2023-01-28 02:31:35,055 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 91 selfloop transitions, 30 changer transitions 7/128 dead transitions. [2023-01-28 02:31:35,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 128 transitions, 1072 flow [2023-01-28 02:31:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:31:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:31:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1689 transitions. [2023-01-28 02:31:35,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3432926829268293 [2023-01-28 02:31:35,061 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1689 transitions. [2023-01-28 02:31:35,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1689 transitions. [2023-01-28 02:31:35,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:35,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1689 transitions. [2023-01-28 02:31:35,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.75) internal successors, (1689), 12 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:35,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:35,072 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:35,073 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 586 flow. Second operand 12 states and 1689 transitions. [2023-01-28 02:31:35,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 128 transitions, 1072 flow [2023-01-28 02:31:35,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 976 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-01-28 02:31:35,080 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 559 flow [2023-01-28 02:31:35,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=559, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2023-01-28 02:31:35,081 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-01-28 02:31:35,081 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 559 flow [2023-01-28 02:31:35,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:35,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:35,082 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:35,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 02:31:35,082 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:35,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:35,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1827664836, now seen corresponding path program 8 times [2023-01-28 02:31:35,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:35,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583879591] [2023-01-28 02:31:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:31:36,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583879591] [2023-01-28 02:31:36,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583879591] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187566783] [2023-01-28 02:31:36,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:31:36,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:36,106 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:36,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 02:31:36,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:31:36,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:36,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 02:31:36,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:36,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:36,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187566783] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:36,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:36,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-28 02:31:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608293303] [2023-01-28 02:31:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:36,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-01-28 02:31:36,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:36,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 559 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:36,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:36,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:36,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:36,962 INFO L130 PetriNetUnfolder]: 375/650 cut-off events. [2023-01-28 02:31:36,963 INFO L131 PetriNetUnfolder]: For 1559/1559 co-relation queries the response was YES. [2023-01-28 02:31:36,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 650 events. 375/650 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2612 event pairs, 57 based on Foata normal form. 7/657 useless extension candidates. Maximal degree in co-relation 2546. Up to 215 conditions per place. [2023-01-28 02:31:36,968 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 87 selfloop transitions, 27 changer transitions 9/123 dead transitions. [2023-01-28 02:31:36,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 1058 flow [2023-01-28 02:31:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1273 transitions. [2023-01-28 02:31:36,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34498644986449867 [2023-01-28 02:31:36,973 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1273 transitions. [2023-01-28 02:31:36,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1273 transitions. [2023-01-28 02:31:36,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:36,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1273 transitions. [2023-01-28 02:31:36,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.44444444444446) internal successors, (1273), 9 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:36,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:36,983 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:36,983 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 559 flow. Second operand 9 states and 1273 transitions. [2023-01-28 02:31:36,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 1058 flow [2023-01-28 02:31:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 123 transitions, 976 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-01-28 02:31:36,991 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 689 flow [2023-01-28 02:31:36,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=689, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-01-28 02:31:36,992 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-01-28 02:31:36,992 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 689 flow [2023-01-28 02:31:36,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:36,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:36,993 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:37,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 02:31:37,202 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:37,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1146369520, now seen corresponding path program 9 times [2023-01-28 02:31:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:37,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902853844] [2023-01-28 02:31:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:37,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:37,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902853844] [2023-01-28 02:31:37,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902853844] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:37,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:37,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:37,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857022562] [2023-01-28 02:31:37,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:37,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:37,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:37,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:37,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:37,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:37,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 689 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:37,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:37,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:37,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:38,152 INFO L130 PetriNetUnfolder]: 384/687 cut-off events. [2023-01-28 02:31:38,153 INFO L131 PetriNetUnfolder]: For 2804/2804 co-relation queries the response was YES. [2023-01-28 02:31:38,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 687 events. 384/687 cut-off events. For 2804/2804 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2921 event pairs, 51 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 3067. Up to 177 conditions per place. [2023-01-28 02:31:38,158 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 114 selfloop transitions, 34 changer transitions 9/157 dead transitions. [2023-01-28 02:31:38,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1342 flow [2023-01-28 02:31:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:31:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:31:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1971 transitions. [2023-01-28 02:31:38,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34337979094076654 [2023-01-28 02:31:38,162 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1971 transitions. [2023-01-28 02:31:38,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1971 transitions. [2023-01-28 02:31:38,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:38,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1971 transitions. [2023-01-28 02:31:38,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.78571428571428) internal successors, (1971), 14 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:38,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:38,172 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:38,172 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 689 flow. Second operand 14 states and 1971 transitions. [2023-01-28 02:31:38,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1342 flow [2023-01-28 02:31:38,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 1285 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:38,182 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 774 flow [2023-01-28 02:31:38,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=774, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-01-28 02:31:38,183 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2023-01-28 02:31:38,183 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 774 flow [2023-01-28 02:31:38,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:38,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:38,183 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:38,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 02:31:38,184 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:38,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash 567811664, now seen corresponding path program 10 times [2023-01-28 02:31:38,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:38,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242495609] [2023-01-28 02:31:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:38,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:38,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:38,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242495609] [2023-01-28 02:31:38,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242495609] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:38,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:38,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512903977] [2023-01-28 02:31:38,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:38,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:38,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:38,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:38,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:38,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:38,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 774 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:38,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:38,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:38,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:39,086 INFO L130 PetriNetUnfolder]: 386/693 cut-off events. [2023-01-28 02:31:39,086 INFO L131 PetriNetUnfolder]: For 2811/2811 co-relation queries the response was YES. [2023-01-28 02:31:39,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3111 conditions, 693 events. 386/693 cut-off events. For 2811/2811 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2993 event pairs, 57 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 3057. Up to 245 conditions per place. [2023-01-28 02:31:39,092 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 93 selfloop transitions, 28 changer transitions 7/128 dead transitions. [2023-01-28 02:31:39,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 1190 flow [2023-01-28 02:31:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:39,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1270 transitions. [2023-01-28 02:31:39,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34417344173441733 [2023-01-28 02:31:39,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1270 transitions. [2023-01-28 02:31:39,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1270 transitions. [2023-01-28 02:31:39,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:39,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1270 transitions. [2023-01-28 02:31:39,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.11111111111111) internal successors, (1270), 9 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,103 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,103 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 774 flow. Second operand 9 states and 1270 transitions. [2023-01-28 02:31:39,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 1190 flow [2023-01-28 02:31:39,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 1145 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-01-28 02:31:39,117 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 811 flow [2023-01-28 02:31:39,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=811, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-01-28 02:31:39,118 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2023-01-28 02:31:39,119 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 811 flow [2023-01-28 02:31:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:39,119 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 02:31:39,121 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:39,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash -132681324, now seen corresponding path program 11 times [2023-01-28 02:31:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:39,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998794933] [2023-01-28 02:31:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:39,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998794933] [2023-01-28 02:31:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998794933] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:39,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:39,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063592297] [2023-01-28 02:31:39,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:39,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:39,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 811 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:39,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:39,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:40,047 INFO L130 PetriNetUnfolder]: 384/683 cut-off events. [2023-01-28 02:31:40,047 INFO L131 PetriNetUnfolder]: For 2641/2641 co-relation queries the response was YES. [2023-01-28 02:31:40,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3050 conditions, 683 events. 384/683 cut-off events. For 2641/2641 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2903 event pairs, 55 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 2999. Up to 177 conditions per place. [2023-01-28 02:31:40,054 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 110 selfloop transitions, 32 changer transitions 7/149 dead transitions. [2023-01-28 02:31:40,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 1351 flow [2023-01-28 02:31:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:31:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:31:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1695 transitions. [2023-01-28 02:31:40,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3445121951219512 [2023-01-28 02:31:40,057 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1695 transitions. [2023-01-28 02:31:40,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1695 transitions. [2023-01-28 02:31:40,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:40,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1695 transitions. [2023-01-28 02:31:40,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.25) internal successors, (1695), 12 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:40,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:40,065 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:40,065 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 811 flow. Second operand 12 states and 1695 transitions. [2023-01-28 02:31:40,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 1351 flow [2023-01-28 02:31:40,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 1287 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-01-28 02:31:40,077 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 810 flow [2023-01-28 02:31:40,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=810, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-01-28 02:31:40,078 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2023-01-28 02:31:40,078 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 810 flow [2023-01-28 02:31:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:40,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:40,078 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:40,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 02:31:40,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:40,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1819505128, now seen corresponding path program 12 times [2023-01-28 02:31:40,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:40,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885076078] [2023-01-28 02:31:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:40,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:41,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:41,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885076078] [2023-01-28 02:31:41,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885076078] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:41,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001623505] [2023-01-28 02:31:41,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:31:41,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:41,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:41,895 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:41,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 02:31:42,035 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 02:31:42,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:42,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 02:31:42,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:31:42,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:31:42,402 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 02:31:42,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-01-28 02:31:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:42,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:42,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001623505] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:42,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:42,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 28 [2023-01-28 02:31:42,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93234486] [2023-01-28 02:31:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:42,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:31:42,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:42,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:31:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-01-28 02:31:42,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-28 02:31:42,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 810 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:42,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:42,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-28 02:31:42,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:43,115 INFO L130 PetriNetUnfolder]: 418/749 cut-off events. [2023-01-28 02:31:43,115 INFO L131 PetriNetUnfolder]: For 3224/3224 co-relation queries the response was YES. [2023-01-28 02:31:43,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 749 events. 418/749 cut-off events. For 3224/3224 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3252 event pairs, 59 based on Foata normal form. 18/767 useless extension candidates. Maximal degree in co-relation 3324. Up to 260 conditions per place. [2023-01-28 02:31:43,122 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 103 selfloop transitions, 36 changer transitions 6/145 dead transitions. [2023-01-28 02:31:43,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 1456 flow [2023-01-28 02:31:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1203 transitions. [2023-01-28 02:31:43,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3260162601626016 [2023-01-28 02:31:43,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1203 transitions. [2023-01-28 02:31:43,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1203 transitions. [2023-01-28 02:31:43,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:43,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1203 transitions. [2023-01-28 02:31:43,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.66666666666666) internal successors, (1203), 9 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:43,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:43,130 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:43,130 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 810 flow. Second operand 9 states and 1203 transitions. [2023-01-28 02:31:43,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 1456 flow [2023-01-28 02:31:43,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 145 transitions, 1340 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-01-28 02:31:43,143 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 958 flow [2023-01-28 02:31:43,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-01-28 02:31:43,144 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2023-01-28 02:31:43,144 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 958 flow [2023-01-28 02:31:43,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:43,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:43,144 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:43,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 02:31:43,350 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:43,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 966752974, now seen corresponding path program 13 times [2023-01-28 02:31:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:43,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437383870] [2023-01-28 02:31:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:31:44,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:44,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437383870] [2023-01-28 02:31:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437383870] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:44,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282657791] [2023-01-28 02:31:44,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:31:44,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:44,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:44,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:44,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 02:31:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:44,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-28 02:31:44,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:44,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:31:44,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:31:44,929 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 02:31:44,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-28 02:31:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:45,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282657791] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:45,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:45,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-01-28 02:31:45,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380492302] [2023-01-28 02:31:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:45,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:31:45,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:31:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-01-28 02:31:45,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-28 02:31:45,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 958 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:45,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:45,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-28 02:31:45,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:45,729 INFO L130 PetriNetUnfolder]: 418/751 cut-off events. [2023-01-28 02:31:45,729 INFO L131 PetriNetUnfolder]: For 3276/3276 co-relation queries the response was YES. [2023-01-28 02:31:45,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 751 events. 418/751 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3262 event pairs, 58 based on Foata normal form. 1/752 useless extension candidates. Maximal degree in co-relation 3464. Up to 269 conditions per place. [2023-01-28 02:31:45,736 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 93 selfloop transitions, 37 changer transitions 11/141 dead transitions. [2023-01-28 02:31:45,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 1448 flow [2023-01-28 02:31:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1198 transitions. [2023-01-28 02:31:45,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32466124661246615 [2023-01-28 02:31:45,738 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1198 transitions. [2023-01-28 02:31:45,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1198 transitions. [2023-01-28 02:31:45,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:45,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1198 transitions. [2023-01-28 02:31:45,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:45,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:45,744 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:45,744 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 958 flow. Second operand 9 states and 1198 transitions. [2023-01-28 02:31:45,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 1448 flow [2023-01-28 02:31:45,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 141 transitions, 1404 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:45,757 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 995 flow [2023-01-28 02:31:45,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=995, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-01-28 02:31:45,758 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-01-28 02:31:45,758 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 995 flow [2023-01-28 02:31:45,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:45,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:45,758 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:45,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:45,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 02:31:45,964 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:45,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash -852520374, now seen corresponding path program 14 times [2023-01-28 02:31:45,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:45,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754698902] [2023-01-28 02:31:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:46,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754698902] [2023-01-28 02:31:46,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754698902] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:46,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:46,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:46,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699932394] [2023-01-28 02:31:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:46,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:46,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:46,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 995 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:46,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:46,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:46,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:46,973 INFO L130 PetriNetUnfolder]: 521/932 cut-off events. [2023-01-28 02:31:46,973 INFO L131 PetriNetUnfolder]: For 4480/4480 co-relation queries the response was YES. [2023-01-28 02:31:46,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 932 events. 521/932 cut-off events. For 4480/4480 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4244 event pairs, 79 based on Foata normal form. 7/939 useless extension candidates. Maximal degree in co-relation 4292. Up to 304 conditions per place. [2023-01-28 02:31:46,981 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 130 selfloop transitions, 52 changer transitions 6/188 dead transitions. [2023-01-28 02:31:46,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 188 transitions, 1925 flow [2023-01-28 02:31:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:31:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:31:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1966 transitions. [2023-01-28 02:31:46,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3425087108013937 [2023-01-28 02:31:46,984 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1966 transitions. [2023-01-28 02:31:46,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1966 transitions. [2023-01-28 02:31:46,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:46,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1966 transitions. [2023-01-28 02:31:46,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.42857142857142) internal successors, (1966), 14 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:46,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:46,992 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:46,992 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 995 flow. Second operand 14 states and 1966 transitions. [2023-01-28 02:31:46,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 188 transitions, 1925 flow [2023-01-28 02:31:47,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 188 transitions, 1834 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-28 02:31:47,008 INFO L231 Difference]: Finished difference. Result has 116 places, 122 transitions, 1387 flow [2023-01-28 02:31:47,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1387, PETRI_PLACES=116, PETRI_TRANSITIONS=122} [2023-01-28 02:31:47,009 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 90 predicate places. [2023-01-28 02:31:47,009 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 122 transitions, 1387 flow [2023-01-28 02:31:47,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:47,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:47,010 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:47,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 02:31:47,010 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:47,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash 683574298, now seen corresponding path program 15 times [2023-01-28 02:31:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185419802] [2023-01-28 02:31:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185419802] [2023-01-28 02:31:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185419802] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:47,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:47,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:31:47,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180077132] [2023-01-28 02:31:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:47,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:31:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:47,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:31:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:31:47,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-28 02:31:47,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 1387 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:47,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:47,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-28 02:31:47,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:48,264 INFO L130 PetriNetUnfolder]: 517/934 cut-off events. [2023-01-28 02:31:48,264 INFO L131 PetriNetUnfolder]: For 5381/5381 co-relation queries the response was YES. [2023-01-28 02:31:48,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 934 events. 517/934 cut-off events. For 5381/5381 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4315 event pairs, 82 based on Foata normal form. 5/939 useless extension candidates. Maximal degree in co-relation 4608. Up to 173 conditions per place. [2023-01-28 02:31:48,272 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 103 selfloop transitions, 63 changer transitions 14/180 dead transitions. [2023-01-28 02:31:48,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 180 transitions, 2040 flow [2023-01-28 02:31:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:31:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:31:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1719 transitions. [2023-01-28 02:31:48,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225140712945591 [2023-01-28 02:31:48,275 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1719 transitions. [2023-01-28 02:31:48,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1719 transitions. [2023-01-28 02:31:48,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:48,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1719 transitions. [2023-01-28 02:31:48,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:48,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:48,282 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:48,282 INFO L175 Difference]: Start difference. First operand has 116 places, 122 transitions, 1387 flow. Second operand 13 states and 1719 transitions. [2023-01-28 02:31:48,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 180 transitions, 2040 flow [2023-01-28 02:31:48,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 180 transitions, 1956 flow, removed 41 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:48,308 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 1455 flow [2023-01-28 02:31:48,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1455, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2023-01-28 02:31:48,309 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2023-01-28 02:31:48,309 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 1455 flow [2023-01-28 02:31:48,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:48,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:48,309 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 02:31:48,310 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:48,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1934235582, now seen corresponding path program 16 times [2023-01-28 02:31:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752784511] [2023-01-28 02:31:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:48,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:48,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752784511] [2023-01-28 02:31:48,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752784511] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:48,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:48,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:31:48,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193375893] [2023-01-28 02:31:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:48,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:31:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:48,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:31:48,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:31:48,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:31:48,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 1455 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:48,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:48,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:31:48,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:49,355 INFO L130 PetriNetUnfolder]: 504/923 cut-off events. [2023-01-28 02:31:49,355 INFO L131 PetriNetUnfolder]: For 5917/5917 co-relation queries the response was YES. [2023-01-28 02:31:49,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 923 events. 504/923 cut-off events. For 5917/5917 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4309 event pairs, 71 based on Foata normal form. 7/930 useless extension candidates. Maximal degree in co-relation 4556. Up to 239 conditions per place. [2023-01-28 02:31:49,365 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 104 selfloop transitions, 72 changer transitions 6/182 dead transitions. [2023-01-28 02:31:49,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 182 transitions, 2087 flow [2023-01-28 02:31:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 02:31:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 02:31:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2034 transitions. [2023-01-28 02:31:49,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307317073170732 [2023-01-28 02:31:49,369 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2034 transitions. [2023-01-28 02:31:49,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2034 transitions. [2023-01-28 02:31:49,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:49,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2034 transitions. [2023-01-28 02:31:49,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.6) internal successors, (2034), 15 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:49,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:49,377 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:49,377 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 1455 flow. Second operand 15 states and 2034 transitions. [2023-01-28 02:31:49,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 182 transitions, 2087 flow [2023-01-28 02:31:49,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 182 transitions, 1968 flow, removed 21 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:49,401 INFO L231 Difference]: Finished difference. Result has 131 places, 126 transitions, 1593 flow [2023-01-28 02:31:49,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1593, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2023-01-28 02:31:49,402 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 105 predicate places. [2023-01-28 02:31:49,402 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 1593 flow [2023-01-28 02:31:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:49,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:49,403 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:49,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 02:31:49,409 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:49,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 472448766, now seen corresponding path program 17 times [2023-01-28 02:31:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630257216] [2023-01-28 02:31:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:49,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:49,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:49,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630257216] [2023-01-28 02:31:49,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630257216] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:49,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:49,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:49,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774254683] [2023-01-28 02:31:49,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:49,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:49,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:49,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:49,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 1593 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:49,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:49,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:49,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:50,335 INFO L130 PetriNetUnfolder]: 502/921 cut-off events. [2023-01-28 02:31:50,336 INFO L131 PetriNetUnfolder]: For 5855/5855 co-relation queries the response was YES. [2023-01-28 02:31:50,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 921 events. 502/921 cut-off events. For 5855/5855 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4271 event pairs, 79 based on Foata normal form. 1/922 useless extension candidates. Maximal degree in co-relation 4757. Up to 301 conditions per place. [2023-01-28 02:31:50,342 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 131 selfloop transitions, 49 changer transitions 9/189 dead transitions. [2023-01-28 02:31:50,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 189 transitions, 2217 flow [2023-01-28 02:31:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:31:50,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:31:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1963 transitions. [2023-01-28 02:31:50,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34198606271777005 [2023-01-28 02:31:50,345 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1963 transitions. [2023-01-28 02:31:50,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1963 transitions. [2023-01-28 02:31:50,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:50,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1963 transitions. [2023-01-28 02:31:50,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.21428571428572) internal successors, (1963), 14 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:50,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:50,373 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:50,373 INFO L175 Difference]: Start difference. First operand has 131 places, 126 transitions, 1593 flow. Second operand 14 states and 1963 transitions. [2023-01-28 02:31:50,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 189 transitions, 2217 flow [2023-01-28 02:31:50,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 189 transitions, 2094 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:50,397 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 1547 flow [2023-01-28 02:31:50,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1547, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2023-01-28 02:31:50,398 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2023-01-28 02:31:50,398 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1547 flow [2023-01-28 02:31:50,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:50,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:50,398 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:50,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 02:31:50,398 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:50,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1596096490, now seen corresponding path program 18 times [2023-01-28 02:31:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:50,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984452703] [2023-01-28 02:31:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:31:51,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984452703] [2023-01-28 02:31:51,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984452703] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:51,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689979488] [2023-01-28 02:31:51,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:31:51,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:51,265 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:51,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 02:31:51,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 02:31:51,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:51,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 02:31:51,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:51,820 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-28 02:31:51,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2023-01-28 02:31:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:51,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689979488] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:51,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:51,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-28 02:31:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657072431] [2023-01-28 02:31:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:51,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2023-01-28 02:31:51,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:51,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1547 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:51,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:51,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:51,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:52,561 INFO L130 PetriNetUnfolder]: 507/940 cut-off events. [2023-01-28 02:31:52,561 INFO L131 PetriNetUnfolder]: For 5653/5653 co-relation queries the response was YES. [2023-01-28 02:31:52,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4918 conditions, 940 events. 507/940 cut-off events. For 5653/5653 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4477 event pairs, 87 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 4834. Up to 386 conditions per place. [2023-01-28 02:31:52,571 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 127 selfloop transitions, 45 changer transitions 7/179 dead transitions. [2023-01-28 02:31:52,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 179 transitions, 2181 flow [2023-01-28 02:31:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:31:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:31:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1405 transitions. [2023-01-28 02:31:52,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3426829268292683 [2023-01-28 02:31:52,573 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1405 transitions. [2023-01-28 02:31:52,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1405 transitions. [2023-01-28 02:31:52,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:52,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1405 transitions. [2023-01-28 02:31:52,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.5) internal successors, (1405), 10 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:52,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:52,579 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:52,579 INFO L175 Difference]: Start difference. First operand has 136 places, 124 transitions, 1547 flow. Second operand 10 states and 1405 transitions. [2023-01-28 02:31:52,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 179 transitions, 2181 flow [2023-01-28 02:31:52,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 179 transitions, 2067 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-01-28 02:31:52,607 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 1613 flow [2023-01-28 02:31:52,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1613, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2023-01-28 02:31:52,608 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 108 predicate places. [2023-01-28 02:31:52,608 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 1613 flow [2023-01-28 02:31:52,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:52,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:52,608 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:52,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:52,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-01-28 02:31:52,814 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:52,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1486136962, now seen corresponding path program 19 times [2023-01-28 02:31:52,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:52,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587347764] [2023-01-28 02:31:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:52,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:31:53,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:53,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587347764] [2023-01-28 02:31:53,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587347764] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:53,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94491966] [2023-01-28 02:31:53,677 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:31:53,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:53,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:53,679 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:53,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 02:31:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:53,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 02:31:53,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:54,175 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-28 02:31:54,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2023-01-28 02:31:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:54,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:54,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94491966] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:54,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:54,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-28 02:31:54,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906244551] [2023-01-28 02:31:54,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:54,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-01-28 02:31:54,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:54,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 1613 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:54,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:54,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:54,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:54,712 INFO L130 PetriNetUnfolder]: 510/949 cut-off events. [2023-01-28 02:31:54,712 INFO L131 PetriNetUnfolder]: For 5817/5817 co-relation queries the response was YES. [2023-01-28 02:31:54,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 949 events. 510/949 cut-off events. For 5817/5817 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4558 event pairs, 87 based on Foata normal form. 1/950 useless extension candidates. Maximal degree in co-relation 4874. Up to 400 conditions per place. [2023-01-28 02:31:54,721 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 121 selfloop transitions, 45 changer transitions 7/173 dead transitions. [2023-01-28 02:31:54,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 173 transitions, 2141 flow [2023-01-28 02:31:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1274 transitions. [2023-01-28 02:31:54,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3452574525745257 [2023-01-28 02:31:54,723 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1274 transitions. [2023-01-28 02:31:54,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1274 transitions. [2023-01-28 02:31:54,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:54,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1274 transitions. [2023-01-28 02:31:54,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.55555555555554) internal successors, (1274), 9 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:54,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:54,728 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:54,728 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 1613 flow. Second operand 9 states and 1274 transitions. [2023-01-28 02:31:54,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 173 transitions, 2141 flow [2023-01-28 02:31:54,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 173 transitions, 2116 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:54,758 INFO L231 Difference]: Finished difference. Result has 139 places, 130 transitions, 1707 flow [2023-01-28 02:31:54,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1707, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2023-01-28 02:31:54,758 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 113 predicate places. [2023-01-28 02:31:54,758 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 1707 flow [2023-01-28 02:31:54,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:54,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:54,759 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:54,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:54,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 02:31:54,965 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:54,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2108337346, now seen corresponding path program 20 times [2023-01-28 02:31:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021837174] [2023-01-28 02:31:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:55,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:55,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021837174] [2023-01-28 02:31:55,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021837174] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:55,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:55,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:31:55,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303260845] [2023-01-28 02:31:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:55,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:31:55,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:31:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:31:55,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:31:55,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 1707 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:55,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:55,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:31:55,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:55,964 INFO L130 PetriNetUnfolder]: 537/980 cut-off events. [2023-01-28 02:31:55,964 INFO L131 PetriNetUnfolder]: For 7209/7209 co-relation queries the response was YES. [2023-01-28 02:31:55,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5344 conditions, 980 events. 537/980 cut-off events. For 7209/7209 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4620 event pairs, 79 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 5276. Up to 297 conditions per place. [2023-01-28 02:31:55,973 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 136 selfloop transitions, 61 changer transitions 7/204 dead transitions. [2023-01-28 02:31:55,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 204 transitions, 2493 flow [2023-01-28 02:31:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 02:31:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 02:31:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2236 transitions. [2023-01-28 02:31:55,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408536585365854 [2023-01-28 02:31:55,976 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2236 transitions. [2023-01-28 02:31:55,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2236 transitions. [2023-01-28 02:31:55,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:55,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2236 transitions. [2023-01-28 02:31:55,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.75) internal successors, (2236), 16 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:55,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:55,984 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:55,984 INFO L175 Difference]: Start difference. First operand has 139 places, 130 transitions, 1707 flow. Second operand 16 states and 2236 transitions. [2023-01-28 02:31:55,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 204 transitions, 2493 flow [2023-01-28 02:31:56,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 204 transitions, 2388 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-01-28 02:31:56,014 INFO L231 Difference]: Finished difference. Result has 152 places, 138 transitions, 1893 flow [2023-01-28 02:31:56,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1893, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2023-01-28 02:31:56,015 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 126 predicate places. [2023-01-28 02:31:56,015 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 1893 flow [2023-01-28 02:31:56,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:56,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:56,015 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 02:31:56,015 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:56,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash 798304752, now seen corresponding path program 21 times [2023-01-28 02:31:56,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:56,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970492465] [2023-01-28 02:31:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:56,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970492465] [2023-01-28 02:31:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970492465] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:31:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865655079] [2023-01-28 02:31:56,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:56,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:31:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:31:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:31:56,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:31:56,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 1893 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:56,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:56,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:31:56,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:57,033 INFO L130 PetriNetUnfolder]: 535/970 cut-off events. [2023-01-28 02:31:57,033 INFO L131 PetriNetUnfolder]: For 7617/7617 co-relation queries the response was YES. [2023-01-28 02:31:57,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 970 events. 535/970 cut-off events. For 7617/7617 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4545 event pairs, 67 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 5521. Up to 255 conditions per place. [2023-01-28 02:31:57,040 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 103 selfloop transitions, 77 changer transitions 8/188 dead transitions. [2023-01-28 02:31:57,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 188 transitions, 2462 flow [2023-01-28 02:31:57,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 02:31:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 02:31:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2026 transitions. [2023-01-28 02:31:57,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32943089430894307 [2023-01-28 02:31:57,044 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2026 transitions. [2023-01-28 02:31:57,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2026 transitions. [2023-01-28 02:31:57,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:57,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2026 transitions. [2023-01-28 02:31:57,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.06666666666666) internal successors, (2026), 15 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:57,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:57,052 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:57,052 INFO L175 Difference]: Start difference. First operand has 152 places, 138 transitions, 1893 flow. Second operand 15 states and 2026 transitions. [2023-01-28 02:31:57,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 188 transitions, 2462 flow [2023-01-28 02:31:57,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 188 transitions, 2382 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:57,083 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 1936 flow [2023-01-28 02:31:57,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1936, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2023-01-28 02:31:57,084 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2023-01-28 02:31:57,084 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 1936 flow [2023-01-28 02:31:57,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:57,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:57,084 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:57,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 02:31:57,084 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:57,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:57,085 INFO L85 PathProgramCache]: Analyzing trace with hash -646550530, now seen corresponding path program 22 times [2023-01-28 02:31:57,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:57,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784403218] [2023-01-28 02:31:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:57,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784403218] [2023-01-28 02:31:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784403218] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:57,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:57,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:31:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044582727] [2023-01-28 02:31:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:31:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:31:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:31:57,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:31:57,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 1936 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:57,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:57,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:31:57,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:58,205 INFO L130 PetriNetUnfolder]: 530/953 cut-off events. [2023-01-28 02:31:58,205 INFO L131 PetriNetUnfolder]: For 7831/7831 co-relation queries the response was YES. [2023-01-28 02:31:58,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5674 conditions, 953 events. 530/953 cut-off events. For 7831/7831 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4341 event pairs, 24 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 5593. Up to 362 conditions per place. [2023-01-28 02:31:58,211 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 111 selfloop transitions, 67 changer transitions 7/185 dead transitions. [2023-01-28 02:31:58,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 185 transitions, 2546 flow [2023-01-28 02:31:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:31:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:31:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2023-01-28 02:31:58,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3302063789868668 [2023-01-28 02:31:58,215 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2023-01-28 02:31:58,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2023-01-28 02:31:58,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:58,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2023-01-28 02:31:58,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.3846153846154) internal successors, (1760), 13 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,221 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,221 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 1936 flow. Second operand 13 states and 1760 transitions. [2023-01-28 02:31:58,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 185 transitions, 2546 flow [2023-01-28 02:31:58,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 185 transitions, 2348 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-01-28 02:31:58,252 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1931 flow [2023-01-28 02:31:58,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1931, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2023-01-28 02:31:58,253 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 125 predicate places. [2023-01-28 02:31:58,253 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1931 flow [2023-01-28 02:31:58,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:58,253 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:58,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 02:31:58,254 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:58,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash -840236614, now seen corresponding path program 1 times [2023-01-28 02:31:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290279758] [2023-01-28 02:31:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:58,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290279758] [2023-01-28 02:31:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290279758] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:58,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:58,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:31:58,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815054868] [2023-01-28 02:31:58,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:58,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:31:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:31:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:31:58,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-28 02:31:58,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1931 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:58,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-28 02:31:58,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:58,833 INFO L130 PetriNetUnfolder]: 566/1008 cut-off events. [2023-01-28 02:31:58,833 INFO L131 PetriNetUnfolder]: For 8758/8758 co-relation queries the response was YES. [2023-01-28 02:31:58,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 1008 events. 566/1008 cut-off events. For 8758/8758 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4673 event pairs, 117 based on Foata normal form. 4/1012 useless extension candidates. Maximal degree in co-relation 6011. Up to 424 conditions per place. [2023-01-28 02:31:58,840 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 128 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2023-01-28 02:31:58,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 183 transitions, 2702 flow [2023-01-28 02:31:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1372 transitions. [2023-01-28 02:31:58,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37181571815718156 [2023-01-28 02:31:58,843 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1372 transitions. [2023-01-28 02:31:58,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1372 transitions. [2023-01-28 02:31:58,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:58,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1372 transitions. [2023-01-28 02:31:58,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.44444444444446) internal successors, (1372), 9 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,847 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,847 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1931 flow. Second operand 9 states and 1372 transitions. [2023-01-28 02:31:58,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 183 transitions, 2702 flow [2023-01-28 02:31:58,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 183 transitions, 2530 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-01-28 02:31:58,879 INFO L231 Difference]: Finished difference. Result has 145 places, 150 transitions, 2020 flow [2023-01-28 02:31:58,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2020, PETRI_PLACES=145, PETRI_TRANSITIONS=150} [2023-01-28 02:31:58,880 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 119 predicate places. [2023-01-28 02:31:58,880 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 150 transitions, 2020 flow [2023-01-28 02:31:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:58,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:58,881 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:58,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 02:31:58,881 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:58,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1320325120, now seen corresponding path program 2 times [2023-01-28 02:31:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250940970] [2023-01-28 02:31:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:59,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:59,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250940970] [2023-01-28 02:31:59,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250940970] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:59,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:59,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:31:59,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311370703] [2023-01-28 02:31:59,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:59,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:31:59,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:59,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:31:59,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:31:59,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-28 02:31:59,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 2020 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:59,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:59,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-28 02:31:59,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:59,435 INFO L130 PetriNetUnfolder]: 572/1018 cut-off events. [2023-01-28 02:31:59,435 INFO L131 PetriNetUnfolder]: For 7910/7910 co-relation queries the response was YES. [2023-01-28 02:31:59,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6007 conditions, 1018 events. 572/1018 cut-off events. For 7910/7910 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4707 event pairs, 109 based on Foata normal form. 4/1022 useless extension candidates. Maximal degree in co-relation 5900. Up to 405 conditions per place. [2023-01-28 02:31:59,442 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 131 selfloop transitions, 57 changer transitions 0/188 dead transitions. [2023-01-28 02:31:59,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 188 transitions, 2686 flow [2023-01-28 02:31:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:31:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:31:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1375 transitions. [2023-01-28 02:31:59,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37262872628726285 [2023-01-28 02:31:59,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1375 transitions. [2023-01-28 02:31:59,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1375 transitions. [2023-01-28 02:31:59,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:59,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1375 transitions. [2023-01-28 02:31:59,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.77777777777777) internal successors, (1375), 9 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:59,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:59,455 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:59,455 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 2020 flow. Second operand 9 states and 1375 transitions. [2023-01-28 02:31:59,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 188 transitions, 2686 flow [2023-01-28 02:31:59,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 188 transitions, 2657 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-01-28 02:31:59,487 INFO L231 Difference]: Finished difference. Result has 153 places, 156 transitions, 2207 flow [2023-01-28 02:31:59,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2207, PETRI_PLACES=153, PETRI_TRANSITIONS=156} [2023-01-28 02:31:59,489 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2023-01-28 02:31:59,489 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 156 transitions, 2207 flow [2023-01-28 02:31:59,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:59,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:59,490 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:59,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 02:31:59,490 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:59,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:59,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1989493530, now seen corresponding path program 3 times [2023-01-28 02:31:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825364588] [2023-01-28 02:31:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:31:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:59,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825364588] [2023-01-28 02:31:59,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825364588] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:59,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:59,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:31:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842337486] [2023-01-28 02:31:59,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:31:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:31:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:31:59,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-28 02:31:59,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 156 transitions, 2207 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:59,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:59,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-28 02:31:59,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:00,062 INFO L130 PetriNetUnfolder]: 556/988 cut-off events. [2023-01-28 02:32:00,062 INFO L131 PetriNetUnfolder]: For 7914/7914 co-relation queries the response was YES. [2023-01-28 02:32:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 988 events. 556/988 cut-off events. For 7914/7914 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4505 event pairs, 91 based on Foata normal form. 4/992 useless extension candidates. Maximal degree in co-relation 5902. Up to 308 conditions per place. [2023-01-28 02:32:00,069 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 146 selfloop transitions, 63 changer transitions 2/211 dead transitions. [2023-01-28 02:32:00,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 211 transitions, 3101 flow [2023-01-28 02:32:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:32:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:32:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1385 transitions. [2023-01-28 02:32:00,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37533875338753386 [2023-01-28 02:32:00,078 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1385 transitions. [2023-01-28 02:32:00,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1385 transitions. [2023-01-28 02:32:00,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:00,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1385 transitions. [2023-01-28 02:32:00,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.88888888888889) internal successors, (1385), 9 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,082 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,083 INFO L175 Difference]: Start difference. First operand has 153 places, 156 transitions, 2207 flow. Second operand 9 states and 1385 transitions. [2023-01-28 02:32:00,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 211 transitions, 3101 flow [2023-01-28 02:32:00,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 211 transitions, 3072 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 02:32:00,119 INFO L231 Difference]: Finished difference. Result has 161 places, 162 transitions, 2445 flow [2023-01-28 02:32:00,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2445, PETRI_PLACES=161, PETRI_TRANSITIONS=162} [2023-01-28 02:32:00,119 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 135 predicate places. [2023-01-28 02:32:00,119 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 162 transitions, 2445 flow [2023-01-28 02:32:00,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:00,120 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:00,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-28 02:32:00,120 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:00,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2037644614, now seen corresponding path program 4 times [2023-01-28 02:32:00,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:00,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139738820] [2023-01-28 02:32:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:00,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:00,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:00,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139738820] [2023-01-28 02:32:00,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139738820] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:00,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:00,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:32:00,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283845338] [2023-01-28 02:32:00,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:00,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:32:00,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:00,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:32:00,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:32:00,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-28 02:32:00,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 162 transitions, 2445 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:00,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-28 02:32:00,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:00,730 INFO L130 PetriNetUnfolder]: 596/1058 cut-off events. [2023-01-28 02:32:00,731 INFO L131 PetriNetUnfolder]: For 10084/10084 co-relation queries the response was YES. [2023-01-28 02:32:00,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 1058 events. 596/1058 cut-off events. For 10084/10084 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4895 event pairs, 55 based on Foata normal form. 4/1062 useless extension candidates. Maximal degree in co-relation 6551. Up to 475 conditions per place. [2023-01-28 02:32:00,738 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 183 selfloop transitions, 34 changer transitions 4/221 dead transitions. [2023-01-28 02:32:00,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 221 transitions, 3441 flow [2023-01-28 02:32:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:32:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:32:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1079 transitions. [2023-01-28 02:32:00,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3759581881533101 [2023-01-28 02:32:00,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1079 transitions. [2023-01-28 02:32:00,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1079 transitions. [2023-01-28 02:32:00,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:00,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1079 transitions. [2023-01-28 02:32:00,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.14285714285714) internal successors, (1079), 7 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,746 INFO L175 Difference]: Start difference. First operand has 161 places, 162 transitions, 2445 flow. Second operand 7 states and 1079 transitions. [2023-01-28 02:32:00,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 221 transitions, 3441 flow [2023-01-28 02:32:00,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 221 transitions, 3351 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-01-28 02:32:00,787 INFO L231 Difference]: Finished difference. Result has 164 places, 168 transitions, 2584 flow [2023-01-28 02:32:00,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2584, PETRI_PLACES=164, PETRI_TRANSITIONS=168} [2023-01-28 02:32:00,787 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 138 predicate places. [2023-01-28 02:32:00,787 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 2584 flow [2023-01-28 02:32:00,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:00,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:00,788 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:00,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-28 02:32:00,788 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:00,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1323057116, now seen corresponding path program 5 times [2023-01-28 02:32:00,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:00,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759693648] [2023-01-28 02:32:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:00,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:01,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:01,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759693648] [2023-01-28 02:32:01,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759693648] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:01,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552298470] [2023-01-28 02:32:01,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:32:01,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:01,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:01,053 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:01,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 02:32:01,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 02:32:01,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:01,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 02:32:01,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:01,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:32:01,452 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:32:01,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 02:32:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552298470] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:32:01,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:32:01,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 16 [2023-01-28 02:32:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919426927] [2023-01-28 02:32:01,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:32:01,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 02:32:01,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:01,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 02:32:01,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-01-28 02:32:01,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 410 [2023-01-28 02:32:01,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 2584 flow. Second operand has 16 states, 16 states have (on average 143.5) internal successors, (2296), 16 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:01,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:01,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 410 [2023-01-28 02:32:01,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:01,963 INFO L130 PetriNetUnfolder]: 615/1095 cut-off events. [2023-01-28 02:32:01,963 INFO L131 PetriNetUnfolder]: For 10651/10651 co-relation queries the response was YES. [2023-01-28 02:32:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 1095 events. 615/1095 cut-off events. For 10651/10651 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5139 event pairs, 103 based on Foata normal form. 4/1099 useless extension candidates. Maximal degree in co-relation 6744. Up to 450 conditions per place. [2023-01-28 02:32:01,972 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 148 selfloop transitions, 81 changer transitions 2/231 dead transitions. [2023-01-28 02:32:01,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 231 transitions, 3553 flow [2023-01-28 02:32:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:32:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:32:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1782 transitions. [2023-01-28 02:32:01,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621951219512195 [2023-01-28 02:32:01,975 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1782 transitions. [2023-01-28 02:32:01,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1782 transitions. [2023-01-28 02:32:01,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:01,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1782 transitions. [2023-01-28 02:32:01,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 148.5) internal successors, (1782), 12 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:01,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:01,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:01,981 INFO L175 Difference]: Start difference. First operand has 164 places, 168 transitions, 2584 flow. Second operand 12 states and 1782 transitions. [2023-01-28 02:32:01,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 231 transitions, 3553 flow [2023-01-28 02:32:02,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 231 transitions, 3434 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-01-28 02:32:02,029 INFO L231 Difference]: Finished difference. Result has 171 places, 176 transitions, 2779 flow [2023-01-28 02:32:02,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2779, PETRI_PLACES=171, PETRI_TRANSITIONS=176} [2023-01-28 02:32:02,030 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2023-01-28 02:32:02,030 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 176 transitions, 2779 flow [2023-01-28 02:32:02,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 143.5) internal successors, (2296), 16 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:02,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:02,031 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:02,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:02,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:02,236 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:02,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:02,237 INFO L85 PathProgramCache]: Analyzing trace with hash 362584518, now seen corresponding path program 6 times [2023-01-28 02:32:02,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:02,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073864580] [2023-01-28 02:32:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:02,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:02,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:02,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073864580] [2023-01-28 02:32:02,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073864580] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:02,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762568450] [2023-01-28 02:32:02,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:32:02,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:02,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:02,541 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:02,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 02:32:02,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 02:32:02,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:02,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 02:32:02,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:02,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:32:02,912 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:32:02,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 02:32:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:02,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762568450] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:32:02,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:32:02,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 17 [2023-01-28 02:32:02,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040557974] [2023-01-28 02:32:02,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:32:02,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 02:32:02,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 02:32:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-01-28 02:32:02,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 410 [2023-01-28 02:32:02,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 176 transitions, 2779 flow. Second operand has 17 states, 17 states have (on average 143.35294117647058) internal successors, (2437), 17 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:02,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:02,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 410 [2023-01-28 02:32:02,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:03,390 INFO L130 PetriNetUnfolder]: 597/1057 cut-off events. [2023-01-28 02:32:03,390 INFO L131 PetriNetUnfolder]: For 10352/10352 co-relation queries the response was YES. [2023-01-28 02:32:03,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6807 conditions, 1057 events. 597/1057 cut-off events. For 10352/10352 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4879 event pairs, 107 based on Foata normal form. 4/1061 useless extension candidates. Maximal degree in co-relation 6693. Up to 494 conditions per place. [2023-01-28 02:32:03,399 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 132 selfloop transitions, 80 changer transitions 0/212 dead transitions. [2023-01-28 02:32:03,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 212 transitions, 3404 flow [2023-01-28 02:32:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:32:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:32:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1631 transitions. [2023-01-28 02:32:03,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3616407982261641 [2023-01-28 02:32:03,401 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1631 transitions. [2023-01-28 02:32:03,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1631 transitions. [2023-01-28 02:32:03,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:03,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1631 transitions. [2023-01-28 02:32:03,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.27272727272728) internal successors, (1631), 11 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:03,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:03,405 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:03,405 INFO L175 Difference]: Start difference. First operand has 171 places, 176 transitions, 2779 flow. Second operand 11 states and 1631 transitions. [2023-01-28 02:32:03,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 212 transitions, 3404 flow [2023-01-28 02:32:03,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 212 transitions, 3119 flow, removed 43 selfloop flow, removed 18 redundant places. [2023-01-28 02:32:03,436 INFO L231 Difference]: Finished difference. Result has 159 places, 171 transitions, 2594 flow [2023-01-28 02:32:03,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2594, PETRI_PLACES=159, PETRI_TRANSITIONS=171} [2023-01-28 02:32:03,436 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 133 predicate places. [2023-01-28 02:32:03,436 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 171 transitions, 2594 flow [2023-01-28 02:32:03,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 143.35294117647058) internal successors, (2437), 17 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:03,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:03,437 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:03,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:03,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:03,637 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:03,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash -310847470, now seen corresponding path program 7 times [2023-01-28 02:32:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831886498] [2023-01-28 02:32:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:03,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:03,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:03,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831886498] [2023-01-28 02:32:03,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831886498] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:03,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:32:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262994110] [2023-01-28 02:32:03,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:03,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:32:03,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:32:03,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:32:03,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 410 [2023-01-28 02:32:03,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 171 transitions, 2594 flow. Second operand has 9 states, 9 states have (on average 142.22222222222223) internal successors, (1280), 9 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:03,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:03,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 410 [2023-01-28 02:32:03,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:04,340 INFO L130 PetriNetUnfolder]: 581/1027 cut-off events. [2023-01-28 02:32:04,340 INFO L131 PetriNetUnfolder]: For 9034/9034 co-relation queries the response was YES. [2023-01-28 02:32:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6372 conditions, 1027 events. 581/1027 cut-off events. For 9034/9034 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4711 event pairs, 112 based on Foata normal form. 4/1031 useless extension candidates. Maximal degree in co-relation 6272. Up to 359 conditions per place. [2023-01-28 02:32:04,350 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 113 selfloop transitions, 80 changer transitions 2/195 dead transitions. [2023-01-28 02:32:04,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 195 transitions, 3134 flow [2023-01-28 02:32:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:32:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:32:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1329 transitions. [2023-01-28 02:32:04,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36016260162601627 [2023-01-28 02:32:04,352 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1329 transitions. [2023-01-28 02:32:04,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1329 transitions. [2023-01-28 02:32:04,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:04,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1329 transitions. [2023-01-28 02:32:04,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.66666666666666) internal successors, (1329), 9 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:04,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:04,357 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:04,357 INFO L175 Difference]: Start difference. First operand has 159 places, 171 transitions, 2594 flow. Second operand 9 states and 1329 transitions. [2023-01-28 02:32:04,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 195 transitions, 3134 flow [2023-01-28 02:32:04,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 3065 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-28 02:32:04,392 INFO L231 Difference]: Finished difference. Result has 160 places, 167 transitions, 2641 flow [2023-01-28 02:32:04,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2641, PETRI_PLACES=160, PETRI_TRANSITIONS=167} [2023-01-28 02:32:04,393 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2023-01-28 02:32:04,393 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 167 transitions, 2641 flow [2023-01-28 02:32:04,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 142.22222222222223) internal successors, (1280), 9 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:04,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:04,415 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:04,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-28 02:32:04,415 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:04,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2085281639, now seen corresponding path program 1 times [2023-01-28 02:32:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:04,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212521955] [2023-01-28 02:32:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:04,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212521955] [2023-01-28 02:32:04,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212521955] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:04,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:04,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378663475] [2023-01-28 02:32:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:04,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:04,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:04,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:04,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 167 transitions, 2641 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:04,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:04,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:04,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:05,633 INFO L130 PetriNetUnfolder]: 779/1372 cut-off events. [2023-01-28 02:32:05,633 INFO L131 PetriNetUnfolder]: For 11657/11657 co-relation queries the response was YES. [2023-01-28 02:32:05,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8295 conditions, 1372 events. 779/1372 cut-off events. For 11657/11657 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6742 event pairs, 77 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 8195. Up to 227 conditions per place. [2023-01-28 02:32:05,641 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 190 selfloop transitions, 141 changer transitions 5/336 dead transitions. [2023-01-28 02:32:05,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 336 transitions, 4769 flow [2023-01-28 02:32:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 02:32:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 02:32:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3045 transitions. [2023-01-28 02:32:05,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375831485587583 [2023-01-28 02:32:05,646 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3045 transitions. [2023-01-28 02:32:05,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3045 transitions. [2023-01-28 02:32:05,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:05,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3045 transitions. [2023-01-28 02:32:05,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 138.4090909090909) internal successors, (3045), 22 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:05,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:05,655 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:05,655 INFO L175 Difference]: Start difference. First operand has 160 places, 167 transitions, 2641 flow. Second operand 22 states and 3045 transitions. [2023-01-28 02:32:05,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 336 transitions, 4769 flow [2023-01-28 02:32:05,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 336 transitions, 4603 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 02:32:05,697 INFO L231 Difference]: Finished difference. Result has 182 places, 227 transitions, 3813 flow [2023-01-28 02:32:05,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3813, PETRI_PLACES=182, PETRI_TRANSITIONS=227} [2023-01-28 02:32:05,698 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 156 predicate places. [2023-01-28 02:32:05,698 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 227 transitions, 3813 flow [2023-01-28 02:32:05,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:05,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:05,699 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:05,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-28 02:32:05,699 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:05,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash 667533083, now seen corresponding path program 2 times [2023-01-28 02:32:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485313618] [2023-01-28 02:32:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:05,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:06,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485313618] [2023-01-28 02:32:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485313618] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:06,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:32:06,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754519342] [2023-01-28 02:32:06,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:06,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:06,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:06,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:32:06,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:06,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 227 transitions, 3813 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:06,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:06,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:06,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:06,963 INFO L130 PetriNetUnfolder]: 941/1663 cut-off events. [2023-01-28 02:32:06,963 INFO L131 PetriNetUnfolder]: For 17550/17550 co-relation queries the response was YES. [2023-01-28 02:32:06,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 1663 events. 941/1663 cut-off events. For 17550/17550 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8740 event pairs, 65 based on Foata normal form. 10/1673 useless extension candidates. Maximal degree in co-relation 10651. Up to 269 conditions per place. [2023-01-28 02:32:06,975 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 191 selfloop transitions, 145 changer transitions 12/348 dead transitions. [2023-01-28 02:32:06,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 348 transitions, 5614 flow [2023-01-28 02:32:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:32:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:32:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2623 transitions. [2023-01-28 02:32:06,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367137355584082 [2023-01-28 02:32:06,982 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2623 transitions. [2023-01-28 02:32:06,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2623 transitions. [2023-01-28 02:32:06,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:06,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2623 transitions. [2023-01-28 02:32:06,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 138.05263157894737) internal successors, (2623), 19 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:06,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:06,990 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:06,990 INFO L175 Difference]: Start difference. First operand has 182 places, 227 transitions, 3813 flow. Second operand 19 states and 2623 transitions. [2023-01-28 02:32:06,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 348 transitions, 5614 flow [2023-01-28 02:32:07,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 348 transitions, 5459 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-01-28 02:32:07,053 INFO L231 Difference]: Finished difference. Result has 205 places, 253 transitions, 4485 flow [2023-01-28 02:32:07,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4485, PETRI_PLACES=205, PETRI_TRANSITIONS=253} [2023-01-28 02:32:07,054 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 179 predicate places. [2023-01-28 02:32:07,054 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 253 transitions, 4485 flow [2023-01-28 02:32:07,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:07,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:07,055 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:07,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-28 02:32:07,055 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:07,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 888752717, now seen corresponding path program 3 times [2023-01-28 02:32:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:07,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209142491] [2023-01-28 02:32:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:07,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209142491] [2023-01-28 02:32:07,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209142491] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:07,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:07,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661961077] [2023-01-28 02:32:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:07,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:07,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:07,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:07,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 253 transitions, 4485 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:07,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:07,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:07,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:08,652 INFO L130 PetriNetUnfolder]: 1087/1908 cut-off events. [2023-01-28 02:32:08,653 INFO L131 PetriNetUnfolder]: For 20831/20831 co-relation queries the response was YES. [2023-01-28 02:32:08,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12887 conditions, 1908 events. 1087/1908 cut-off events. For 20831/20831 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10109 event pairs, 119 based on Foata normal form. 3/1911 useless extension candidates. Maximal degree in co-relation 12769. Up to 342 conditions per place. [2023-01-28 02:32:08,668 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 246 selfloop transitions, 172 changer transitions 8/426 dead transitions. [2023-01-28 02:32:08,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 426 transitions, 6572 flow [2023-01-28 02:32:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 02:32:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 02:32:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3617 transitions. [2023-01-28 02:32:08,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393058161350844 [2023-01-28 02:32:08,679 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3617 transitions. [2023-01-28 02:32:08,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3617 transitions. [2023-01-28 02:32:08,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:08,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3617 transitions. [2023-01-28 02:32:08,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 139.1153846153846) internal successors, (3617), 26 states have internal predecessors, (3617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:08,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:08,688 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:08,688 INFO L175 Difference]: Start difference. First operand has 205 places, 253 transitions, 4485 flow. Second operand 26 states and 3617 transitions. [2023-01-28 02:32:08,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 426 transitions, 6572 flow [2023-01-28 02:32:08,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 426 transitions, 6453 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-01-28 02:32:08,755 INFO L231 Difference]: Finished difference. Result has 231 places, 275 transitions, 5127 flow [2023-01-28 02:32:08,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=4386, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5127, PETRI_PLACES=231, PETRI_TRANSITIONS=275} [2023-01-28 02:32:08,756 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 205 predicate places. [2023-01-28 02:32:08,756 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 275 transitions, 5127 flow [2023-01-28 02:32:08,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:08,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:08,756 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:08,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-01-28 02:32:08,756 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:08,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1880887905, now seen corresponding path program 4 times [2023-01-28 02:32:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:08,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414130660] [2023-01-28 02:32:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:08,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414130660] [2023-01-28 02:32:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414130660] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:09,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:09,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:09,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970489892] [2023-01-28 02:32:09,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:09,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:09,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:09,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:09,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:09,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:09,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 275 transitions, 5127 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:09,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:09,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:09,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:09,987 INFO L130 PetriNetUnfolder]: 1128/1993 cut-off events. [2023-01-28 02:32:09,987 INFO L131 PetriNetUnfolder]: For 24120/24120 co-relation queries the response was YES. [2023-01-28 02:32:09,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14386 conditions, 1993 events. 1128/1993 cut-off events. For 24120/24120 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10773 event pairs, 194 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 14261. Up to 580 conditions per place. [2023-01-28 02:32:10,003 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 202 selfloop transitions, 163 changer transitions 6/371 dead transitions. [2023-01-28 02:32:10,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 371 transitions, 6732 flow [2023-01-28 02:32:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 02:32:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 02:32:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3017 transitions. [2023-01-28 02:32:10,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3344789356984479 [2023-01-28 02:32:10,006 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3017 transitions. [2023-01-28 02:32:10,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3017 transitions. [2023-01-28 02:32:10,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:10,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3017 transitions. [2023-01-28 02:32:10,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.13636363636363) internal successors, (3017), 22 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:10,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:10,015 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:10,015 INFO L175 Difference]: Start difference. First operand has 231 places, 275 transitions, 5127 flow. Second operand 22 states and 3017 transitions. [2023-01-28 02:32:10,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 371 transitions, 6732 flow [2023-01-28 02:32:10,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 371 transitions, 6502 flow, removed 23 selfloop flow, removed 13 redundant places. [2023-01-28 02:32:10,130 INFO L231 Difference]: Finished difference. Result has 245 places, 296 transitions, 5749 flow [2023-01-28 02:32:10,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5749, PETRI_PLACES=245, PETRI_TRANSITIONS=296} [2023-01-28 02:32:10,131 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 219 predicate places. [2023-01-28 02:32:10,131 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 296 transitions, 5749 flow [2023-01-28 02:32:10,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:10,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:10,131 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:10,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-01-28 02:32:10,132 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:10,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:10,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1306807323, now seen corresponding path program 5 times [2023-01-28 02:32:10,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:10,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299617890] [2023-01-28 02:32:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:10,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:10,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299617890] [2023-01-28 02:32:10,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299617890] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:10,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:10,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:10,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611553333] [2023-01-28 02:32:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:10,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:10,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:10,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:10,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 296 transitions, 5749 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:10,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:10,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:10,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:11,460 INFO L130 PetriNetUnfolder]: 1136/2017 cut-off events. [2023-01-28 02:32:11,460 INFO L131 PetriNetUnfolder]: For 26640/26640 co-relation queries the response was YES. [2023-01-28 02:32:11,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14854 conditions, 2017 events. 1136/2017 cut-off events. For 26640/26640 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11075 event pairs, 190 based on Foata normal form. 1/2018 useless extension candidates. Maximal degree in co-relation 14722. Up to 580 conditions per place. [2023-01-28 02:32:11,476 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 206 selfloop transitions, 160 changer transitions 6/372 dead transitions. [2023-01-28 02:32:11,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 372 transitions, 7055 flow [2023-01-28 02:32:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:32:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:32:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2610 transitions. [2023-01-28 02:32:11,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33504492939666236 [2023-01-28 02:32:11,479 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2610 transitions. [2023-01-28 02:32:11,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2610 transitions. [2023-01-28 02:32:11,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:11,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2610 transitions. [2023-01-28 02:32:11,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.3684210526316) internal successors, (2610), 19 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:11,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:11,487 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:11,487 INFO L175 Difference]: Start difference. First operand has 245 places, 296 transitions, 5749 flow. Second operand 19 states and 2610 transitions. [2023-01-28 02:32:11,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 372 transitions, 7055 flow [2023-01-28 02:32:11,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 372 transitions, 6837 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-01-28 02:32:11,590 INFO L231 Difference]: Finished difference. Result has 258 places, 301 transitions, 6024 flow [2023-01-28 02:32:11,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=5541, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6024, PETRI_PLACES=258, PETRI_TRANSITIONS=301} [2023-01-28 02:32:11,590 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 232 predicate places. [2023-01-28 02:32:11,591 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 301 transitions, 6024 flow [2023-01-28 02:32:11,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:11,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:11,591 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:11,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-01-28 02:32:11,591 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:11,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1266843037, now seen corresponding path program 6 times [2023-01-28 02:32:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:11,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532896346] [2023-01-28 02:32:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:11,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:12,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532896346] [2023-01-28 02:32:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532896346] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:12,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:32:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425227994] [2023-01-28 02:32:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:12,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:32:12,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:32:12,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 301 transitions, 6024 flow. Second operand has 12 states, 12 states have (on average 133.75) internal successors, (1605), 12 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:12,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:12,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:32:12,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:13,187 INFO L130 PetriNetUnfolder]: 1347/2467 cut-off events. [2023-01-28 02:32:13,187 INFO L131 PetriNetUnfolder]: For 31025/31025 co-relation queries the response was YES. [2023-01-28 02:32:13,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17657 conditions, 2467 events. 1347/2467 cut-off events. For 31025/31025 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14384 event pairs, 112 based on Foata normal form. 2/2469 useless extension candidates. Maximal degree in co-relation 17521. Up to 484 conditions per place. [2023-01-28 02:32:13,208 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 218 selfloop transitions, 228 changer transitions 9/455 dead transitions. [2023-01-28 02:32:13,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 455 transitions, 8172 flow [2023-01-28 02:32:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 02:32:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 02:32:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3641 transitions. [2023-01-28 02:32:13,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34155722326454035 [2023-01-28 02:32:13,212 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3641 transitions. [2023-01-28 02:32:13,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3641 transitions. [2023-01-28 02:32:13,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:13,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3641 transitions. [2023-01-28 02:32:13,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 140.03846153846155) internal successors, (3641), 26 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:13,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:13,219 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:13,219 INFO L175 Difference]: Start difference. First operand has 258 places, 301 transitions, 6024 flow. Second operand 26 states and 3641 transitions. [2023-01-28 02:32:13,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 455 transitions, 8172 flow [2023-01-28 02:32:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 455 transitions, 7816 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-01-28 02:32:13,321 INFO L231 Difference]: Finished difference. Result has 275 places, 340 transitions, 6873 flow [2023-01-28 02:32:13,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=5697, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6873, PETRI_PLACES=275, PETRI_TRANSITIONS=340} [2023-01-28 02:32:13,323 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 249 predicate places. [2023-01-28 02:32:13,323 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 340 transitions, 6873 flow [2023-01-28 02:32:13,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 133.75) internal successors, (1605), 12 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:13,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:13,323 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:13,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-01-28 02:32:13,324 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:13,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1703155119, now seen corresponding path program 7 times [2023-01-28 02:32:13,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:13,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961710260] [2023-01-28 02:32:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:13,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:13,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:13,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961710260] [2023-01-28 02:32:13,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961710260] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:13,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:13,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:13,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425703490] [2023-01-28 02:32:13,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:13,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:13,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:13,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 340 transitions, 6873 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:13,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:13,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:13,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:14,808 INFO L130 PetriNetUnfolder]: 1395/2544 cut-off events. [2023-01-28 02:32:14,809 INFO L131 PetriNetUnfolder]: For 35241/35241 co-relation queries the response was YES. [2023-01-28 02:32:14,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19094 conditions, 2544 events. 1395/2544 cut-off events. For 35241/35241 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14857 event pairs, 211 based on Foata normal form. 1/2545 useless extension candidates. Maximal degree in co-relation 18951. Up to 871 conditions per place. [2023-01-28 02:32:14,833 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 248 selfloop transitions, 181 changer transitions 6/435 dead transitions. [2023-01-28 02:32:14,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 435 transitions, 8561 flow [2023-01-28 02:32:14,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 02:32:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 02:32:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3020 transitions. [2023-01-28 02:32:14,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3348115299334812 [2023-01-28 02:32:14,836 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3020 transitions. [2023-01-28 02:32:14,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3020 transitions. [2023-01-28 02:32:14,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:14,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3020 transitions. [2023-01-28 02:32:14,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.27272727272728) internal successors, (3020), 22 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:14,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:14,842 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:14,842 INFO L175 Difference]: Start difference. First operand has 275 places, 340 transitions, 6873 flow. Second operand 22 states and 3020 transitions. [2023-01-28 02:32:14,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 435 transitions, 8561 flow [2023-01-28 02:32:14,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 435 transitions, 8037 flow, removed 61 selfloop flow, removed 20 redundant places. [2023-01-28 02:32:14,979 INFO L231 Difference]: Finished difference. Result has 280 places, 353 transitions, 7083 flow [2023-01-28 02:32:14,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7083, PETRI_PLACES=280, PETRI_TRANSITIONS=353} [2023-01-28 02:32:14,980 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 254 predicate places. [2023-01-28 02:32:14,980 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 353 transitions, 7083 flow [2023-01-28 02:32:14,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:14,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:14,980 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:14,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-01-28 02:32:14,980 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:14,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:14,981 INFO L85 PathProgramCache]: Analyzing trace with hash 922318553, now seen corresponding path program 8 times [2023-01-28 02:32:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:14,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797018740] [2023-01-28 02:32:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797018740] [2023-01-28 02:32:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797018740] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:15,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425745670] [2023-01-28 02:32:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:15,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:15,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:15,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 353 transitions, 7083 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:15,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:15,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:15,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:16,405 INFO L130 PetriNetUnfolder]: 1390/2533 cut-off events. [2023-01-28 02:32:16,405 INFO L131 PetriNetUnfolder]: For 32940/32940 co-relation queries the response was YES. [2023-01-28 02:32:16,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18955 conditions, 2533 events. 1390/2533 cut-off events. For 32940/32940 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14779 event pairs, 216 based on Foata normal form. 3/2536 useless extension candidates. Maximal degree in co-relation 18810. Up to 919 conditions per place. [2023-01-28 02:32:16,428 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 231 selfloop transitions, 175 changer transitions 11/417 dead transitions. [2023-01-28 02:32:16,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 417 transitions, 8236 flow [2023-01-28 02:32:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 02:32:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 02:32:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2742 transitions. [2023-01-28 02:32:16,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33439024390243904 [2023-01-28 02:32:16,431 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2742 transitions. [2023-01-28 02:32:16,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2742 transitions. [2023-01-28 02:32:16,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:16,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2742 transitions. [2023-01-28 02:32:16,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.1) internal successors, (2742), 20 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:16,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 410.0) internal successors, (8610), 21 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:16,437 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 410.0) internal successors, (8610), 21 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:16,437 INFO L175 Difference]: Start difference. First operand has 280 places, 353 transitions, 7083 flow. Second operand 20 states and 2742 transitions. [2023-01-28 02:32:16,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 417 transitions, 8236 flow [2023-01-28 02:32:16,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 417 transitions, 7950 flow, removed 12 selfloop flow, removed 14 redundant places. [2023-01-28 02:32:16,574 INFO L231 Difference]: Finished difference. Result has 286 places, 349 transitions, 7063 flow [2023-01-28 02:32:16,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6772, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7063, PETRI_PLACES=286, PETRI_TRANSITIONS=349} [2023-01-28 02:32:16,574 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2023-01-28 02:32:16,574 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 349 transitions, 7063 flow [2023-01-28 02:32:16,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:16,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:16,575 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:16,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-01-28 02:32:16,575 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:16,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2017731595, now seen corresponding path program 9 times [2023-01-28 02:32:16,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:16,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116295996] [2023-01-28 02:32:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:16,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:32:17,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116295996] [2023-01-28 02:32:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116295996] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653530954] [2023-01-28 02:32:17,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:32:17,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:17,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:17,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 02:32:17,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:32:17,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:17,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 02:32:17,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:18,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:32:18,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653530954] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:18,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:32:18,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 28 [2023-01-28 02:32:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258269476] [2023-01-28 02:32:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2023-01-28 02:32:18,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:18,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 349 transitions, 7063 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:18,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:18,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:18,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:19,283 INFO L130 PetriNetUnfolder]: 1386/2517 cut-off events. [2023-01-28 02:32:19,283 INFO L131 PetriNetUnfolder]: For 34874/34874 co-relation queries the response was YES. [2023-01-28 02:32:19,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18880 conditions, 2517 events. 1386/2517 cut-off events. For 34874/34874 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14570 event pairs, 214 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 18733. Up to 1256 conditions per place. [2023-01-28 02:32:19,314 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 273 selfloop transitions, 127 changer transitions 5/405 dead transitions. [2023-01-28 02:32:19,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 405 transitions, 8207 flow [2023-01-28 02:32:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:32:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:32:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1938 transitions. [2023-01-28 02:32:19,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3376306620209059 [2023-01-28 02:32:19,317 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1938 transitions. [2023-01-28 02:32:19,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1938 transitions. [2023-01-28 02:32:19,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:19,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1938 transitions. [2023-01-28 02:32:19,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 138.42857142857142) internal successors, (1938), 14 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:19,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:19,323 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:19,323 INFO L175 Difference]: Start difference. First operand has 286 places, 349 transitions, 7063 flow. Second operand 14 states and 1938 transitions. [2023-01-28 02:32:19,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 405 transitions, 8207 flow [2023-01-28 02:32:19,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 405 transitions, 7870 flow, removed 3 selfloop flow, removed 19 redundant places. [2023-01-28 02:32:19,483 INFO L231 Difference]: Finished difference. Result has 278 places, 352 transitions, 7034 flow [2023-01-28 02:32:19,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7034, PETRI_PLACES=278, PETRI_TRANSITIONS=352} [2023-01-28 02:32:19,484 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2023-01-28 02:32:19,484 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 352 transitions, 7034 flow [2023-01-28 02:32:19,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:19,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:19,484 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:19,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:19,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:19,685 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:19,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1516426929, now seen corresponding path program 10 times [2023-01-28 02:32:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563872748] [2023-01-28 02:32:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563872748] [2023-01-28 02:32:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563872748] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:20,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:20,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:20,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519291248] [2023-01-28 02:32:20,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:20,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:20,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:20,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:20,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:20,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 352 transitions, 7034 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:20,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:20,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:20,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:21,314 INFO L130 PetriNetUnfolder]: 1552/2839 cut-off events. [2023-01-28 02:32:21,314 INFO L131 PetriNetUnfolder]: For 40089/40089 co-relation queries the response was YES. [2023-01-28 02:32:21,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20996 conditions, 2839 events. 1552/2839 cut-off events. For 40089/40089 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17162 event pairs, 114 based on Foata normal form. 2/2841 useless extension candidates. Maximal degree in co-relation 20850. Up to 583 conditions per place. [2023-01-28 02:32:21,342 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 224 selfloop transitions, 272 changer transitions 5/501 dead transitions. [2023-01-28 02:32:21,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 501 transitions, 9435 flow [2023-01-28 02:32:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 02:32:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 02:32:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3584 transitions. [2023-01-28 02:32:21,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33621013133208255 [2023-01-28 02:32:21,345 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3584 transitions. [2023-01-28 02:32:21,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3584 transitions. [2023-01-28 02:32:21,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:21,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3584 transitions. [2023-01-28 02:32:21,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 137.84615384615384) internal successors, (3584), 26 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:21,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:21,354 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:21,354 INFO L175 Difference]: Start difference. First operand has 278 places, 352 transitions, 7034 flow. Second operand 26 states and 3584 transitions. [2023-01-28 02:32:21,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 501 transitions, 9435 flow [2023-01-28 02:32:21,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 501 transitions, 9045 flow, removed 20 selfloop flow, removed 17 redundant places. [2023-01-28 02:32:21,502 INFO L231 Difference]: Finished difference. Result has 298 places, 401 transitions, 8347 flow [2023-01-28 02:32:21,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6682, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8347, PETRI_PLACES=298, PETRI_TRANSITIONS=401} [2023-01-28 02:32:21,502 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 272 predicate places. [2023-01-28 02:32:21,502 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 401 transitions, 8347 flow [2023-01-28 02:32:21,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:21,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:21,503 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:21,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-01-28 02:32:21,503 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:21,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1176697371, now seen corresponding path program 11 times [2023-01-28 02:32:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:21,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117364858] [2023-01-28 02:32:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:21,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:21,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117364858] [2023-01-28 02:32:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117364858] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:21,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:21,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093966480] [2023-01-28 02:32:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:21,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:21,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:21,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:21,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:21,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 401 transitions, 8347 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:21,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:21,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:21,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:23,182 INFO L130 PetriNetUnfolder]: 1612/2952 cut-off events. [2023-01-28 02:32:23,183 INFO L131 PetriNetUnfolder]: For 44066/44066 co-relation queries the response was YES. [2023-01-28 02:32:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22745 conditions, 2952 events. 1612/2952 cut-off events. For 44066/44066 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18027 event pairs, 136 based on Foata normal form. 1/2953 useless extension candidates. Maximal degree in co-relation 22591. Up to 735 conditions per place. [2023-01-28 02:32:23,210 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 251 selfloop transitions, 240 changer transitions 2/493 dead transitions. [2023-01-28 02:32:23,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 493 transitions, 10313 flow [2023-01-28 02:32:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:32:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:32:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2618 transitions. [2023-01-28 02:32:23,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33607188703465984 [2023-01-28 02:32:23,212 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2618 transitions. [2023-01-28 02:32:23,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2618 transitions. [2023-01-28 02:32:23,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:23,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2618 transitions. [2023-01-28 02:32:23,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.78947368421052) internal successors, (2618), 19 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:23,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:23,218 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:23,218 INFO L175 Difference]: Start difference. First operand has 298 places, 401 transitions, 8347 flow. Second operand 19 states and 2618 transitions. [2023-01-28 02:32:23,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 493 transitions, 10313 flow [2023-01-28 02:32:23,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 493 transitions, 9984 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-01-28 02:32:23,381 INFO L231 Difference]: Finished difference. Result has 311 places, 424 transitions, 9155 flow [2023-01-28 02:32:23,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8046, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9155, PETRI_PLACES=311, PETRI_TRANSITIONS=424} [2023-01-28 02:32:23,382 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 285 predicate places. [2023-01-28 02:32:23,382 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 424 transitions, 9155 flow [2023-01-28 02:32:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:23,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:23,382 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:23,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-01-28 02:32:23,382 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:23,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash 195493989, now seen corresponding path program 12 times [2023-01-28 02:32:23,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:23,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041274237] [2023-01-28 02:32:23,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:23,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041274237] [2023-01-28 02:32:23,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041274237] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:23,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:23,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:23,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554883215] [2023-01-28 02:32:23,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:23,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:23,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:23,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:23,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:23,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:23,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 424 transitions, 9155 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:23,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:23,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:23,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:25,018 INFO L130 PetriNetUnfolder]: 1585/2910 cut-off events. [2023-01-28 02:32:25,018 INFO L131 PetriNetUnfolder]: For 46361/46361 co-relation queries the response was YES. [2023-01-28 02:32:25,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22851 conditions, 2910 events. 1585/2910 cut-off events. For 46361/46361 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17842 event pairs, 190 based on Foata normal form. 14/2924 useless extension candidates. Maximal degree in co-relation 22694. Up to 810 conditions per place. [2023-01-28 02:32:25,045 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 229 selfloop transitions, 251 changer transitions 9/489 dead transitions. [2023-01-28 02:32:25,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 489 transitions, 10419 flow [2023-01-28 02:32:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 02:32:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 02:32:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3029 transitions. [2023-01-28 02:32:25,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33580931263858094 [2023-01-28 02:32:25,049 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3029 transitions. [2023-01-28 02:32:25,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3029 transitions. [2023-01-28 02:32:25,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:25,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3029 transitions. [2023-01-28 02:32:25,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.6818181818182) internal successors, (3029), 22 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:25,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:25,057 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:25,057 INFO L175 Difference]: Start difference. First operand has 311 places, 424 transitions, 9155 flow. Second operand 22 states and 3029 transitions. [2023-01-28 02:32:25,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 489 transitions, 10419 flow [2023-01-28 02:32:25,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 489 transitions, 10170 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-28 02:32:25,258 INFO L231 Difference]: Finished difference. Result has 325 places, 416 transitions, 9295 flow [2023-01-28 02:32:25,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8851, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9295, PETRI_PLACES=325, PETRI_TRANSITIONS=416} [2023-01-28 02:32:25,259 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 299 predicate places. [2023-01-28 02:32:25,259 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 416 transitions, 9295 flow [2023-01-28 02:32:25,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:25,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:25,260 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:25,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-01-28 02:32:25,260 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:25,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -204890007, now seen corresponding path program 13 times [2023-01-28 02:32:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359027001] [2023-01-28 02:32:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:25,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359027001] [2023-01-28 02:32:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359027001] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:25,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:25,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:25,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416764655] [2023-01-28 02:32:25,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:25,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:25,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:25,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:25,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:25,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 416 transitions, 9295 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:25,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:25,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:25,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:26,785 INFO L130 PetriNetUnfolder]: 1583/2905 cut-off events. [2023-01-28 02:32:26,785 INFO L131 PetriNetUnfolder]: For 48230/48230 co-relation queries the response was YES. [2023-01-28 02:32:26,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23217 conditions, 2905 events. 1583/2905 cut-off events. For 48230/48230 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17662 event pairs, 115 based on Foata normal form. 3/2908 useless extension candidates. Maximal degree in co-relation 23059. Up to 735 conditions per place. [2023-01-28 02:32:26,811 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 212 selfloop transitions, 270 changer transitions 5/487 dead transitions. [2023-01-28 02:32:26,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 487 transitions, 10805 flow [2023-01-28 02:32:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 02:32:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 02:32:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3016 transitions. [2023-01-28 02:32:26,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343680709534368 [2023-01-28 02:32:26,814 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3016 transitions. [2023-01-28 02:32:26,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3016 transitions. [2023-01-28 02:32:26,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:26,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3016 transitions. [2023-01-28 02:32:26,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.0909090909091) internal successors, (3016), 22 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:26,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:26,822 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:26,822 INFO L175 Difference]: Start difference. First operand has 325 places, 416 transitions, 9295 flow. Second operand 22 states and 3016 transitions. [2023-01-28 02:32:26,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 487 transitions, 10805 flow [2023-01-28 02:32:26,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 487 transitions, 10273 flow, removed 15 selfloop flow, removed 19 redundant places. [2023-01-28 02:32:26,999 INFO L231 Difference]: Finished difference. Result has 327 places, 421 transitions, 9474 flow [2023-01-28 02:32:27,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8789, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9474, PETRI_PLACES=327, PETRI_TRANSITIONS=421} [2023-01-28 02:32:27,000 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 301 predicate places. [2023-01-28 02:32:27,000 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 421 transitions, 9474 flow [2023-01-28 02:32:27,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:27,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:27,001 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:27,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-01-28 02:32:27,001 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:27,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash 314959577, now seen corresponding path program 14 times [2023-01-28 02:32:27,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757441046] [2023-01-28 02:32:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757441046] [2023-01-28 02:32:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757441046] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:27,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:27,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375297985] [2023-01-28 02:32:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:27,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:27,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:27,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 421 transitions, 9474 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:27,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:27,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:27,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:28,338 INFO L130 PetriNetUnfolder]: 1580/2894 cut-off events. [2023-01-28 02:32:28,338 INFO L131 PetriNetUnfolder]: For 47247/47247 co-relation queries the response was YES. [2023-01-28 02:32:28,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23201 conditions, 2894 events. 1580/2894 cut-off events. For 47247/47247 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17550 event pairs, 212 based on Foata normal form. 3/2897 useless extension candidates. Maximal degree in co-relation 23043. Up to 1103 conditions per place. [2023-01-28 02:32:28,367 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 292 selfloop transitions, 161 changer transitions 13/466 dead transitions. [2023-01-28 02:32:28,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 466 transitions, 10657 flow [2023-01-28 02:32:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:32:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:32:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1929 transitions. [2023-01-28 02:32:28,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3360627177700348 [2023-01-28 02:32:28,369 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1929 transitions. [2023-01-28 02:32:28,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1929 transitions. [2023-01-28 02:32:28,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:28,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1929 transitions. [2023-01-28 02:32:28,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 137.78571428571428) internal successors, (1929), 14 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:28,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:28,375 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:28,375 INFO L175 Difference]: Start difference. First operand has 327 places, 421 transitions, 9474 flow. Second operand 14 states and 1929 transitions. [2023-01-28 02:32:28,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 466 transitions, 10657 flow [2023-01-28 02:32:28,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 466 transitions, 10137 flow, removed 5 selfloop flow, removed 19 redundant places. [2023-01-28 02:32:28,559 INFO L231 Difference]: Finished difference. Result has 324 places, 419 transitions, 9234 flow [2023-01-28 02:32:28,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8962, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9234, PETRI_PLACES=324, PETRI_TRANSITIONS=419} [2023-01-28 02:32:28,560 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 298 predicate places. [2023-01-28 02:32:28,560 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 419 transitions, 9234 flow [2023-01-28 02:32:28,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:28,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:28,560 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:28,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-01-28 02:32:28,560 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:28,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1133666139, now seen corresponding path program 15 times [2023-01-28 02:32:28,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:28,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652360656] [2023-01-28 02:32:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:32:29,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:29,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652360656] [2023-01-28 02:32:29,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652360656] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:29,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124191497] [2023-01-28 02:32:29,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:32:29,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:29,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:29,343 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:29,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 02:32:29,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:32:29,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:29,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:32:29,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:29,875 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:32:29,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-01-28 02:32:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:29,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:32:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124191497] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:32:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 27 [2023-01-28 02:32:29,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532066396] [2023-01-28 02:32:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2023-01-28 02:32:29,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:29,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 419 transitions, 9234 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:29,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:29,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:29,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:30,801 INFO L130 PetriNetUnfolder]: 1583/2899 cut-off events. [2023-01-28 02:32:30,801 INFO L131 PetriNetUnfolder]: For 47173/47173 co-relation queries the response was YES. [2023-01-28 02:32:30,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23043 conditions, 2899 events. 1583/2899 cut-off events. For 47173/47173 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17648 event pairs, 214 based on Foata normal form. 3/2902 useless extension candidates. Maximal degree in co-relation 22883. Up to 1487 conditions per place. [2023-01-28 02:32:30,831 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 311 selfloop transitions, 136 changer transitions 10/457 dead transitions. [2023-01-28 02:32:30,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 457 transitions, 10481 flow [2023-01-28 02:32:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:32:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:32:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1649 transitions. [2023-01-28 02:32:30,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33516260162601624 [2023-01-28 02:32:30,833 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1649 transitions. [2023-01-28 02:32:30,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1649 transitions. [2023-01-28 02:32:30,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:30,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1649 transitions. [2023-01-28 02:32:30,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.41666666666666) internal successors, (1649), 12 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:30,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:30,836 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:30,837 INFO L175 Difference]: Start difference. First operand has 324 places, 419 transitions, 9234 flow. Second operand 12 states and 1649 transitions. [2023-01-28 02:32:30,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 457 transitions, 10481 flow [2023-01-28 02:32:31,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 457 transitions, 10139 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-01-28 02:32:31,020 INFO L231 Difference]: Finished difference. Result has 321 places, 422 transitions, 9277 flow [2023-01-28 02:32:31,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8904, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9277, PETRI_PLACES=321, PETRI_TRANSITIONS=422} [2023-01-28 02:32:31,021 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 295 predicate places. [2023-01-28 02:32:31,021 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 422 transitions, 9277 flow [2023-01-28 02:32:31,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:31,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:31,021 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:31,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:31,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-01-28 02:32:31,222 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:31,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:31,222 INFO L85 PathProgramCache]: Analyzing trace with hash -821144427, now seen corresponding path program 16 times [2023-01-28 02:32:31,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:31,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030836962] [2023-01-28 02:32:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:31,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:31,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:31,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030836962] [2023-01-28 02:32:31,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030836962] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:31,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:31,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:31,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267680410] [2023-01-28 02:32:31,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:31,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:31,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:31,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 422 transitions, 9277 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:31,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:31,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:31,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:32,634 INFO L130 PetriNetUnfolder]: 1579/2882 cut-off events. [2023-01-28 02:32:32,635 INFO L131 PetriNetUnfolder]: For 47057/47057 co-relation queries the response was YES. [2023-01-28 02:32:32,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22877 conditions, 2882 events. 1579/2882 cut-off events. For 47057/47057 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17435 event pairs, 113 based on Foata normal form. 2/2884 useless extension candidates. Maximal degree in co-relation 22717. Up to 735 conditions per place. [2023-01-28 02:32:32,669 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 247 selfloop transitions, 231 changer transitions 5/483 dead transitions. [2023-01-28 02:32:32,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 483 transitions, 10605 flow [2023-01-28 02:32:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 02:32:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 02:32:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2343 transitions. [2023-01-28 02:32:32,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.336154949784792 [2023-01-28 02:32:32,671 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2343 transitions. [2023-01-28 02:32:32,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2343 transitions. [2023-01-28 02:32:32,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:32,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2343 transitions. [2023-01-28 02:32:32,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.8235294117647) internal successors, (2343), 17 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:32,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:32,676 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:32,676 INFO L175 Difference]: Start difference. First operand has 321 places, 422 transitions, 9277 flow. Second operand 17 states and 2343 transitions. [2023-01-28 02:32:32,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 483 transitions, 10605 flow [2023-01-28 02:32:32,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 483 transitions, 10376 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-01-28 02:32:32,941 INFO L231 Difference]: Finished difference. Result has 328 places, 421 transitions, 9501 flow [2023-01-28 02:32:32,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=9054, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9501, PETRI_PLACES=328, PETRI_TRANSITIONS=421} [2023-01-28 02:32:32,943 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 302 predicate places. [2023-01-28 02:32:32,943 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 421 transitions, 9501 flow [2023-01-28 02:32:32,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:32,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:32,943 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:32,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-01-28 02:32:32,944 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:32,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1523939993, now seen corresponding path program 17 times [2023-01-28 02:32:32,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:32,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350078636] [2023-01-28 02:32:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:32,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350078636] [2023-01-28 02:32:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350078636] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 02:32:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582609096] [2023-01-28 02:32:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:32:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:32:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:32:33,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 410 [2023-01-28 02:32:33,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 421 transitions, 9501 flow. Second operand has 14 states, 14 states have (on average 123.5) internal successors, (1729), 14 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:33,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:33,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 410 [2023-01-28 02:32:33,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:35,199 INFO L130 PetriNetUnfolder]: 1650/3011 cut-off events. [2023-01-28 02:32:35,199 INFO L131 PetriNetUnfolder]: For 52243/52243 co-relation queries the response was YES. [2023-01-28 02:32:35,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23982 conditions, 3011 events. 1650/3011 cut-off events. For 52243/52243 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 18530 event pairs, 109 based on Foata normal form. 32/3043 useless extension candidates. Maximal degree in co-relation 23824. Up to 1449 conditions per place. [2023-01-28 02:32:35,227 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 295 selfloop transitions, 232 changer transitions 7/534 dead transitions. [2023-01-28 02:32:35,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 534 transitions, 11945 flow [2023-01-28 02:32:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:32:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:32:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2466 transitions. [2023-01-28 02:32:35,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3165596919127086 [2023-01-28 02:32:35,229 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2466 transitions. [2023-01-28 02:32:35,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2466 transitions. [2023-01-28 02:32:35,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:35,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2466 transitions. [2023-01-28 02:32:35,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 129.78947368421052) internal successors, (2466), 19 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:35,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:35,235 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:35,235 INFO L175 Difference]: Start difference. First operand has 328 places, 421 transitions, 9501 flow. Second operand 19 states and 2466 transitions. [2023-01-28 02:32:35,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 534 transitions, 11945 flow [2023-01-28 02:32:35,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 534 transitions, 11311 flow, removed 4 selfloop flow, removed 20 redundant places. [2023-01-28 02:32:35,463 INFO L231 Difference]: Finished difference. Result has 332 places, 452 transitions, 10277 flow [2023-01-28 02:32:35,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8866, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10277, PETRI_PLACES=332, PETRI_TRANSITIONS=452} [2023-01-28 02:32:35,464 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 306 predicate places. [2023-01-28 02:32:35,464 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 452 transitions, 10277 flow [2023-01-28 02:32:35,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 123.5) internal successors, (1729), 14 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:35,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:35,465 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:35,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-01-28 02:32:35,465 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:35,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2078706087, now seen corresponding path program 18 times [2023-01-28 02:32:35,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:35,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917055789] [2023-01-28 02:32:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:35,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:32:36,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:36,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917055789] [2023-01-28 02:32:36,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917055789] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:36,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002893806] [2023-01-28 02:32:36,442 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:32:36,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:36,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:36,443 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:36,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 02:32:36,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 02:32:36,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:36,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 02:32:36,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:37,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:32:37,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:32:37,008 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 02:32:37,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-01-28 02:32:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:37,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:32:37,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002893806] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:37,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:32:37,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 26 [2023-01-28 02:32:37,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844148931] [2023-01-28 02:32:37,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:37,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:37,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:37,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:37,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-01-28 02:32:37,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 410 [2023-01-28 02:32:37,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 452 transitions, 10277 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:37,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:37,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 410 [2023-01-28 02:32:37,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:38,262 INFO L130 PetriNetUnfolder]: 1764/3177 cut-off events. [2023-01-28 02:32:38,262 INFO L131 PetriNetUnfolder]: For 52025/52025 co-relation queries the response was YES. [2023-01-28 02:32:38,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25471 conditions, 3177 events. 1764/3177 cut-off events. For 52025/52025 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19356 event pairs, 184 based on Foata normal form. 5/3182 useless extension candidates. Maximal degree in co-relation 25309. Up to 1545 conditions per place. [2023-01-28 02:32:38,298 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 309 selfloop transitions, 186 changer transitions 11/506 dead transitions. [2023-01-28 02:32:38,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 506 transitions, 11736 flow [2023-01-28 02:32:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:32:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:32:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1343 transitions. [2023-01-28 02:32:38,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3275609756097561 [2023-01-28 02:32:38,300 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1343 transitions. [2023-01-28 02:32:38,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1343 transitions. [2023-01-28 02:32:38,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:38,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1343 transitions. [2023-01-28 02:32:38,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.3) internal successors, (1343), 10 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:38,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:38,304 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:38,304 INFO L175 Difference]: Start difference. First operand has 332 places, 452 transitions, 10277 flow. Second operand 10 states and 1343 transitions. [2023-01-28 02:32:38,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 506 transitions, 11736 flow [2023-01-28 02:32:38,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 506 transitions, 11372 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-01-28 02:32:38,577 INFO L231 Difference]: Finished difference. Result has 334 places, 456 transitions, 10436 flow [2023-01-28 02:32:38,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10436, PETRI_PLACES=334, PETRI_TRANSITIONS=456} [2023-01-28 02:32:38,577 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 308 predicate places. [2023-01-28 02:32:38,577 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 456 transitions, 10436 flow [2023-01-28 02:32:38,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:38,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:38,578 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:38,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:38,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:38,779 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:38,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:38,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1296520111, now seen corresponding path program 19 times [2023-01-28 02:32:38,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:38,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698497956] [2023-01-28 02:32:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:39,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:39,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698497956] [2023-01-28 02:32:39,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698497956] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:39,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:39,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:32:39,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557814100] [2023-01-28 02:32:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:39,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:39,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:32:39,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:39,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 456 transitions, 10436 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:39,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:39,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:39,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:40,223 INFO L130 PetriNetUnfolder]: 1760/3173 cut-off events. [2023-01-28 02:32:40,224 INFO L131 PetriNetUnfolder]: For 54282/54282 co-relation queries the response was YES. [2023-01-28 02:32:40,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25677 conditions, 3173 events. 1760/3173 cut-off events. For 54282/54282 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19319 event pairs, 124 based on Foata normal form. 1/3174 useless extension candidates. Maximal degree in co-relation 25515. Up to 706 conditions per place. [2023-01-28 02:32:40,253 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 234 selfloop transitions, 307 changer transitions 5/546 dead transitions. [2023-01-28 02:32:40,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 546 transitions, 12286 flow [2023-01-28 02:32:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:32:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:32:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2621 transitions. [2023-01-28 02:32:40,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33645699614890884 [2023-01-28 02:32:40,255 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2621 transitions. [2023-01-28 02:32:40,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2621 transitions. [2023-01-28 02:32:40,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:40,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2621 transitions. [2023-01-28 02:32:40,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.94736842105263) internal successors, (2621), 19 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:40,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:40,260 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:40,260 INFO L175 Difference]: Start difference. First operand has 334 places, 456 transitions, 10436 flow. Second operand 19 states and 2621 transitions. [2023-01-28 02:32:40,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 546 transitions, 12286 flow [2023-01-28 02:32:40,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 546 transitions, 11938 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-01-28 02:32:40,471 INFO L231 Difference]: Finished difference. Result has 345 places, 474 transitions, 11062 flow [2023-01-28 02:32:40,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=10107, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11062, PETRI_PLACES=345, PETRI_TRANSITIONS=474} [2023-01-28 02:32:40,471 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 319 predicate places. [2023-01-28 02:32:40,471 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 474 transitions, 11062 flow [2023-01-28 02:32:40,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:40,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:40,472 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:40,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-01-28 02:32:40,472 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:40,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -305542235, now seen corresponding path program 20 times [2023-01-28 02:32:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:40,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857721691] [2023-01-28 02:32:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:41,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857721691] [2023-01-28 02:32:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857721691] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:41,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:41,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 02:32:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555302798] [2023-01-28 02:32:41,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:41,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:32:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:32:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:32:41,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-28 02:32:41,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 474 transitions, 11062 flow. Second operand has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:41,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:41,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-28 02:32:41,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:42,624 INFO L130 PetriNetUnfolder]: 1944/3545 cut-off events. [2023-01-28 02:32:42,624 INFO L131 PetriNetUnfolder]: For 63937/63937 co-relation queries the response was YES. [2023-01-28 02:32:42,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28690 conditions, 3545 events. 1944/3545 cut-off events. For 63937/63937 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 22452 event pairs, 170 based on Foata normal form. 5/3550 useless extension candidates. Maximal degree in co-relation 28526. Up to 598 conditions per place. [2023-01-28 02:32:42,664 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 288 selfloop transitions, 369 changer transitions 8/665 dead transitions. [2023-01-28 02:32:42,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 665 transitions, 14359 flow [2023-01-28 02:32:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 02:32:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 02:32:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3315 transitions. [2023-01-28 02:32:42,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31097560975609756 [2023-01-28 02:32:42,667 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3315 transitions. [2023-01-28 02:32:42,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3315 transitions. [2023-01-28 02:32:42,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:42,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3315 transitions. [2023-01-28 02:32:42,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 127.5) internal successors, (3315), 26 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:42,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:42,678 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:42,678 INFO L175 Difference]: Start difference. First operand has 345 places, 474 transitions, 11062 flow. Second operand 26 states and 3315 transitions. [2023-01-28 02:32:42,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 665 transitions, 14359 flow [2023-01-28 02:32:42,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 665 transitions, 13941 flow, removed 57 selfloop flow, removed 8 redundant places. [2023-01-28 02:32:42,981 INFO L231 Difference]: Finished difference. Result has 372 places, 513 transitions, 12575 flow [2023-01-28 02:32:42,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=10746, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12575, PETRI_PLACES=372, PETRI_TRANSITIONS=513} [2023-01-28 02:32:42,982 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2023-01-28 02:32:42,982 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 513 transitions, 12575 flow [2023-01-28 02:32:42,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:42,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:42,982 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:42,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-01-28 02:32:42,982 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:42,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:42,983 INFO L85 PathProgramCache]: Analyzing trace with hash 830388595, now seen corresponding path program 21 times [2023-01-28 02:32:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:42,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258251800] [2023-01-28 02:32:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:43,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:43,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258251800] [2023-01-28 02:32:43,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258251800] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:43,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 02:32:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608641625] [2023-01-28 02:32:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:43,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:32:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:43,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:32:43,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:32:43,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-28 02:32:43,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 513 transitions, 12575 flow. Second operand has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:43,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:43,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-28 02:32:43,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:45,082 INFO L130 PetriNetUnfolder]: 1945/3548 cut-off events. [2023-01-28 02:32:45,082 INFO L131 PetriNetUnfolder]: For 69196/69196 co-relation queries the response was YES. [2023-01-28 02:32:45,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30014 conditions, 3548 events. 1945/3548 cut-off events. For 69196/69196 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22491 event pairs, 154 based on Foata normal form. 2/3550 useless extension candidates. Maximal degree in co-relation 29839. Up to 781 conditions per place. [2023-01-28 02:32:45,203 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 243 selfloop transitions, 352 changer transitions 7/602 dead transitions. [2023-01-28 02:32:45,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 602 transitions, 14358 flow [2023-01-28 02:32:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 02:32:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 02:32:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2778 transitions. [2023-01-28 02:32:45,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3079822616407982 [2023-01-28 02:32:45,205 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2778 transitions. [2023-01-28 02:32:45,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2778 transitions. [2023-01-28 02:32:45,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:45,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2778 transitions. [2023-01-28 02:32:45,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 126.27272727272727) internal successors, (2778), 22 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:45,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:45,211 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:45,211 INFO L175 Difference]: Start difference. First operand has 372 places, 513 transitions, 12575 flow. Second operand 22 states and 2778 transitions. [2023-01-28 02:32:45,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 602 transitions, 14358 flow [2023-01-28 02:32:45,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 602 transitions, 13772 flow, removed 87 selfloop flow, removed 13 redundant places. [2023-01-28 02:32:45,602 INFO L231 Difference]: Finished difference. Result has 381 places, 513 transitions, 12805 flow [2023-01-28 02:32:45,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12019, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12805, PETRI_PLACES=381, PETRI_TRANSITIONS=513} [2023-01-28 02:32:45,603 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-28 02:32:45,603 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 513 transitions, 12805 flow [2023-01-28 02:32:45,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:45,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:45,603 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:45,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-01-28 02:32:45,603 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:45,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 327894257, now seen corresponding path program 22 times [2023-01-28 02:32:45,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:45,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448625482] [2023-01-28 02:32:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:45,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448625482] [2023-01-28 02:32:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448625482] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:46,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:46,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:46,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47639293] [2023-01-28 02:32:46,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:46,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:46,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:46,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-28 02:32:46,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 513 transitions, 12805 flow. Second operand has 13 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:46,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:46,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-28 02:32:46,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:47,671 INFO L130 PetriNetUnfolder]: 1917/3510 cut-off events. [2023-01-28 02:32:47,672 INFO L131 PetriNetUnfolder]: For 75113/75113 co-relation queries the response was YES. [2023-01-28 02:32:47,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29738 conditions, 3510 events. 1917/3510 cut-off events. For 75113/75113 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22293 event pairs, 252 based on Foata normal form. 14/3524 useless extension candidates. Maximal degree in co-relation 29566. Up to 1344 conditions per place. [2023-01-28 02:32:47,709 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 308 selfloop transitions, 254 changer transitions 9/571 dead transitions. [2023-01-28 02:32:47,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 571 transitions, 14231 flow [2023-01-28 02:32:47,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 02:32:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 02:32:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2271 transitions. [2023-01-28 02:32:47,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30772357723577237 [2023-01-28 02:32:47,711 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2271 transitions. [2023-01-28 02:32:47,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2271 transitions. [2023-01-28 02:32:47,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:47,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2271 transitions. [2023-01-28 02:32:47,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.16666666666667) internal successors, (2271), 18 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:47,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:47,716 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:47,716 INFO L175 Difference]: Start difference. First operand has 381 places, 513 transitions, 12805 flow. Second operand 18 states and 2271 transitions. [2023-01-28 02:32:47,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 571 transitions, 14231 flow [2023-01-28 02:32:48,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 571 transitions, 13653 flow, removed 6 selfloop flow, removed 18 redundant places. [2023-01-28 02:32:48,023 INFO L231 Difference]: Finished difference. Result has 381 places, 509 transitions, 12701 flow [2023-01-28 02:32:48,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12168, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12701, PETRI_PLACES=381, PETRI_TRANSITIONS=509} [2023-01-28 02:32:48,024 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-28 02:32:48,024 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 509 transitions, 12701 flow [2023-01-28 02:32:48,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:48,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:48,025 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:48,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-01-28 02:32:48,025 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:48,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash 411107351, now seen corresponding path program 23 times [2023-01-28 02:32:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:48,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152094612] [2023-01-28 02:32:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:48,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152094612] [2023-01-28 02:32:48,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152094612] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:48,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:48,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:32:48,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336249039] [2023-01-28 02:32:48,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:48,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:32:48,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:48,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:32:48,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:32:48,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-28 02:32:48,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 509 transitions, 12701 flow. Second operand has 11 states, 11 states have (on average 134.9090909090909) internal successors, (1484), 11 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:48,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:48,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-28 02:32:48,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:49,464 INFO L130 PetriNetUnfolder]: 1908/3478 cut-off events. [2023-01-28 02:32:49,464 INFO L131 PetriNetUnfolder]: For 73883/73883 co-relation queries the response was YES. [2023-01-28 02:32:49,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29632 conditions, 3478 events. 1908/3478 cut-off events. For 73883/73883 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21827 event pairs, 134 based on Foata normal form. 1/3479 useless extension candidates. Maximal degree in co-relation 29459. Up to 937 conditions per place. [2023-01-28 02:32:49,504 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 247 selfloop transitions, 305 changer transitions 6/558 dead transitions. [2023-01-28 02:32:49,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 558 transitions, 14154 flow [2023-01-28 02:32:49,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:32:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:32:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1970 transitions. [2023-01-28 02:32:49,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.343205574912892 [2023-01-28 02:32:49,507 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1970 transitions. [2023-01-28 02:32:49,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1970 transitions. [2023-01-28 02:32:49,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:49,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1970 transitions. [2023-01-28 02:32:49,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.71428571428572) internal successors, (1970), 14 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:49,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:49,513 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:49,513 INFO L175 Difference]: Start difference. First operand has 381 places, 509 transitions, 12701 flow. Second operand 14 states and 1970 transitions. [2023-01-28 02:32:49,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 558 transitions, 14154 flow [2023-01-28 02:32:49,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 558 transitions, 13748 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-01-28 02:32:49,856 INFO L231 Difference]: Finished difference. Result has 381 places, 511 transitions, 13058 flow [2023-01-28 02:32:49,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12301, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13058, PETRI_PLACES=381, PETRI_TRANSITIONS=511} [2023-01-28 02:32:49,856 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-28 02:32:49,856 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 511 transitions, 13058 flow [2023-01-28 02:32:49,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.9090909090909) internal successors, (1484), 11 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:49,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:49,857 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:49,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-01-28 02:32:49,857 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:49,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2039877833, now seen corresponding path program 24 times [2023-01-28 02:32:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967908173] [2023-01-28 02:32:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:50,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:50,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967908173] [2023-01-28 02:32:50,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967908173] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:50,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:50,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:32:50,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16258957] [2023-01-28 02:32:50,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:50,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:50,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:32:50,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:50,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 511 transitions, 13058 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:50,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:50,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:50,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:51,544 INFO L130 PetriNetUnfolder]: 1910/3484 cut-off events. [2023-01-28 02:32:51,545 INFO L131 PetriNetUnfolder]: For 75641/75641 co-relation queries the response was YES. [2023-01-28 02:32:51,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30108 conditions, 3484 events. 1910/3484 cut-off events. For 75641/75641 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21909 event pairs, 119 based on Foata normal form. 1/3485 useless extension candidates. Maximal degree in co-relation 29934. Up to 777 conditions per place. [2023-01-28 02:32:51,583 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 247 selfloop transitions, 337 changer transitions 5/589 dead transitions. [2023-01-28 02:32:51,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 589 transitions, 14776 flow [2023-01-28 02:32:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:32:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:32:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2630 transitions. [2023-01-28 02:32:51,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337612323491656 [2023-01-28 02:32:51,586 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2630 transitions. [2023-01-28 02:32:51,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2630 transitions. [2023-01-28 02:32:51,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:51,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2630 transitions. [2023-01-28 02:32:51,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 138.42105263157896) internal successors, (2630), 19 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:51,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:51,591 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:51,591 INFO L175 Difference]: Start difference. First operand has 381 places, 511 transitions, 13058 flow. Second operand 19 states and 2630 transitions. [2023-01-28 02:32:51,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 589 transitions, 14776 flow [2023-01-28 02:32:51,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 589 transitions, 14339 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-28 02:32:51,890 INFO L231 Difference]: Finished difference. Result has 392 places, 514 transitions, 13401 flow [2023-01-28 02:32:51,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12632, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13401, PETRI_PLACES=392, PETRI_TRANSITIONS=514} [2023-01-28 02:32:51,890 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 366 predicate places. [2023-01-28 02:32:51,891 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 514 transitions, 13401 flow [2023-01-28 02:32:51,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:51,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:51,891 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:51,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-01-28 02:32:51,891 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:51,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:51,891 INFO L85 PathProgramCache]: Analyzing trace with hash -197376943, now seen corresponding path program 25 times [2023-01-28 02:32:51,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:51,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878360175] [2023-01-28 02:32:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:51,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878360175] [2023-01-28 02:32:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878360175] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:52,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810346583] [2023-01-28 02:32:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:52,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:52,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:52,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 410 [2023-01-28 02:32:52,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 514 transitions, 13401 flow. Second operand has 13 states, 13 states have (on average 127.61538461538461) internal successors, (1659), 13 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:52,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:52,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 410 [2023-01-28 02:32:52,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:53,709 INFO L130 PetriNetUnfolder]: 1909/3477 cut-off events. [2023-01-28 02:32:53,709 INFO L131 PetriNetUnfolder]: For 78157/78157 co-relation queries the response was YES. [2023-01-28 02:32:53,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30636 conditions, 3477 events. 1909/3477 cut-off events. For 78157/78157 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 21812 event pairs, 136 based on Foata normal form. 1/3478 useless extension candidates. Maximal degree in co-relation 30461. Up to 937 conditions per place. [2023-01-28 02:32:53,752 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 233 selfloop transitions, 326 changer transitions 6/565 dead transitions. [2023-01-28 02:32:53,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 565 transitions, 14816 flow [2023-01-28 02:32:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 02:32:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 02:32:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2255 transitions. [2023-01-28 02:32:53,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2023-01-28 02:32:53,754 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2255 transitions. [2023-01-28 02:32:53,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2255 transitions. [2023-01-28 02:32:53,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:53,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2255 transitions. [2023-01-28 02:32:53,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 132.64705882352942) internal successors, (2255), 17 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:53,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:53,758 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:53,758 INFO L175 Difference]: Start difference. First operand has 392 places, 514 transitions, 13401 flow. Second operand 17 states and 2255 transitions. [2023-01-28 02:32:53,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 565 transitions, 14816 flow [2023-01-28 02:32:54,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 565 transitions, 14215 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-01-28 02:32:54,079 INFO L231 Difference]: Finished difference. Result has 394 places, 514 transitions, 13487 flow [2023-01-28 02:32:54,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12806, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13487, PETRI_PLACES=394, PETRI_TRANSITIONS=514} [2023-01-28 02:32:54,080 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 368 predicate places. [2023-01-28 02:32:54,080 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 514 transitions, 13487 flow [2023-01-28 02:32:54,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 127.61538461538461) internal successors, (1659), 13 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:54,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:54,081 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:54,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-01-28 02:32:54,081 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:54,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash -896136115, now seen corresponding path program 26 times [2023-01-28 02:32:54,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:54,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364261056] [2023-01-28 02:32:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:54,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:54,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364261056] [2023-01-28 02:32:54,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364261056] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:54,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:54,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:54,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002040464] [2023-01-28 02:32:54,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:54,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:54,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:54,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:54,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:54,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:54,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 514 transitions, 13487 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:54,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:54,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:54,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:55,947 INFO L130 PetriNetUnfolder]: 1972/3597 cut-off events. [2023-01-28 02:32:55,947 INFO L131 PetriNetUnfolder]: For 77607/77607 co-relation queries the response was YES. [2023-01-28 02:32:55,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31571 conditions, 3597 events. 1972/3597 cut-off events. For 77607/77607 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22759 event pairs, 203 based on Foata normal form. 4/3601 useless extension candidates. Maximal degree in co-relation 31396. Up to 1102 conditions per place. [2023-01-28 02:32:55,995 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 390 selfloop transitions, 221 changer transitions 7/618 dead transitions. [2023-01-28 02:32:55,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 618 transitions, 15610 flow [2023-01-28 02:32:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 02:32:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 02:32:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3028 transitions. [2023-01-28 02:32:55,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33569844789356984 [2023-01-28 02:32:55,998 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3028 transitions. [2023-01-28 02:32:55,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3028 transitions. [2023-01-28 02:32:55,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:55,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3028 transitions. [2023-01-28 02:32:56,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.63636363636363) internal successors, (3028), 22 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:56,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:56,006 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:56,006 INFO L175 Difference]: Start difference. First operand has 394 places, 514 transitions, 13487 flow. Second operand 22 states and 3028 transitions. [2023-01-28 02:32:56,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 618 transitions, 15610 flow [2023-01-28 02:32:56,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 618 transitions, 14912 flow, removed 5 selfloop flow, removed 15 redundant places. [2023-01-28 02:32:56,328 INFO L231 Difference]: Finished difference. Result has 404 places, 526 transitions, 13670 flow [2023-01-28 02:32:56,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12821, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=13670, PETRI_PLACES=404, PETRI_TRANSITIONS=526} [2023-01-28 02:32:56,329 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 378 predicate places. [2023-01-28 02:32:56,329 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 526 transitions, 13670 flow [2023-01-28 02:32:56,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:56,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:56,330 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:56,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-01-28 02:32:56,330 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:56,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:56,330 INFO L85 PathProgramCache]: Analyzing trace with hash 424796825, now seen corresponding path program 27 times [2023-01-28 02:32:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:56,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951250936] [2023-01-28 02:32:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951250936] [2023-01-28 02:32:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951250936] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:56,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:56,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:32:56,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246815683] [2023-01-28 02:32:56,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:56,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:32:56,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:32:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:32:56,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:56,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 526 transitions, 13670 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:56,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:56,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:56,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:57,989 INFO L130 PetriNetUnfolder]: 1976/3609 cut-off events. [2023-01-28 02:32:57,989 INFO L131 PetriNetUnfolder]: For 78647/78647 co-relation queries the response was YES. [2023-01-28 02:32:58,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32146 conditions, 3609 events. 1976/3609 cut-off events. For 78647/78647 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22865 event pairs, 179 based on Foata normal form. 1/3610 useless extension candidates. Maximal degree in co-relation 31967. Up to 1195 conditions per place. [2023-01-28 02:32:58,035 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 372 selfloop transitions, 223 changer transitions 5/600 dead transitions. [2023-01-28 02:32:58,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 600 transitions, 15349 flow [2023-01-28 02:32:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 02:32:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 02:32:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2880 transitions. [2023-01-28 02:32:58,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3344947735191638 [2023-01-28 02:32:58,038 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2880 transitions. [2023-01-28 02:32:58,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2880 transitions. [2023-01-28 02:32:58,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:58,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2880 transitions. [2023-01-28 02:32:58,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.14285714285714) internal successors, (2880), 21 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:58,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 410.0) internal successors, (9020), 22 states have internal predecessors, (9020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:58,044 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 410.0) internal successors, (9020), 22 states have internal predecessors, (9020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:58,044 INFO L175 Difference]: Start difference. First operand has 404 places, 526 transitions, 13670 flow. Second operand 21 states and 2880 transitions. [2023-01-28 02:32:58,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 600 transitions, 15349 flow [2023-01-28 02:32:58,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 600 transitions, 15000 flow, removed 55 selfloop flow, removed 13 redundant places. [2023-01-28 02:32:58,369 INFO L231 Difference]: Finished difference. Result has 412 places, 528 transitions, 13847 flow [2023-01-28 02:32:58,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=13339, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13847, PETRI_PLACES=412, PETRI_TRANSITIONS=528} [2023-01-28 02:32:58,370 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 386 predicate places. [2023-01-28 02:32:58,370 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 528 transitions, 13847 flow [2023-01-28 02:32:58,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:58,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:58,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:32:58,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-01-28 02:32:58,371 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:58,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:58,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1572709157, now seen corresponding path program 28 times [2023-01-28 02:32:58,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:58,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823530431] [2023-01-28 02:32:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:32:58,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:58,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823530431] [2023-01-28 02:32:58,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823530431] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:58,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:32:58,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:32:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531984630] [2023-01-28 02:32:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:58,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:58,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:58,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:32:58,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 02:32:58,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 528 transitions, 13847 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:58,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:58,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 02:32:58,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:00,213 INFO L130 PetriNetUnfolder]: 1975/3602 cut-off events. [2023-01-28 02:33:00,213 INFO L131 PetriNetUnfolder]: For 78344/78344 co-relation queries the response was YES. [2023-01-28 02:33:00,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32307 conditions, 3602 events. 1975/3602 cut-off events. For 78344/78344 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 22769 event pairs, 40 based on Foata normal form. 1/3603 useless extension candidates. Maximal degree in co-relation 32127. Up to 826 conditions per place. [2023-01-28 02:33:00,263 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 259 selfloop transitions, 371 changer transitions 8/638 dead transitions. [2023-01-28 02:33:00,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 638 transitions, 16254 flow [2023-01-28 02:33:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 02:33:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 02:33:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3160 transitions. [2023-01-28 02:33:00,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33510074231177095 [2023-01-28 02:33:00,265 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3160 transitions. [2023-01-28 02:33:00,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3160 transitions. [2023-01-28 02:33:00,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:00,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3160 transitions. [2023-01-28 02:33:00,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 137.3913043478261) internal successors, (3160), 23 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:00,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 410.0) internal successors, (9840), 24 states have internal predecessors, (9840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:00,272 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 410.0) internal successors, (9840), 24 states have internal predecessors, (9840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:00,272 INFO L175 Difference]: Start difference. First operand has 412 places, 528 transitions, 13847 flow. Second operand 23 states and 3160 transitions. [2023-01-28 02:33:00,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 638 transitions, 16254 flow [2023-01-28 02:33:00,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 638 transitions, 15864 flow, removed 4 selfloop flow, removed 17 redundant places. [2023-01-28 02:33:00,619 INFO L231 Difference]: Finished difference. Result has 421 places, 548 transitions, 14866 flow [2023-01-28 02:33:00,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=13488, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14866, PETRI_PLACES=421, PETRI_TRANSITIONS=548} [2023-01-28 02:33:00,619 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 395 predicate places. [2023-01-28 02:33:00,620 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 548 transitions, 14866 flow [2023-01-28 02:33:00,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:00,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:00,620 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:00,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-01-28 02:33:00,620 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:00,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:00,620 INFO L85 PathProgramCache]: Analyzing trace with hash 273531114, now seen corresponding path program 1 times [2023-01-28 02:33:00,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:00,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559833417] [2023-01-28 02:33:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:00,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:00,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559833417] [2023-01-28 02:33:00,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559833417] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895321345] [2023-01-28 02:33:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:00,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:00,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:00,664 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:00,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 02:33:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:00,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 02:33:00,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:00,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:00,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895321345] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:33:00,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:33:00,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 02:33:00,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638616290] [2023-01-28 02:33:00,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:33:00,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:33:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:33:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:33:00,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-28 02:33:00,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 548 transitions, 14866 flow. Second operand has 10 states, 10 states have (on average 174.9) internal successors, (1749), 10 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:00,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:00,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-28 02:33:00,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:02,097 INFO L130 PetriNetUnfolder]: 2548/4539 cut-off events. [2023-01-28 02:33:02,098 INFO L131 PetriNetUnfolder]: For 99505/99505 co-relation queries the response was YES. [2023-01-28 02:33:02,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40265 conditions, 4539 events. 2548/4539 cut-off events. For 99505/99505 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 26582 event pairs, 514 based on Foata normal form. 222/4761 useless extension candidates. Maximal degree in co-relation 40079. Up to 1245 conditions per place. [2023-01-28 02:33:02,152 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 674 selfloop transitions, 94 changer transitions 0/768 dead transitions. [2023-01-28 02:33:02,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 768 transitions, 20458 flow [2023-01-28 02:33:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:33:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:33:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1293 transitions. [2023-01-28 02:33:02,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505226480836237 [2023-01-28 02:33:02,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1293 transitions. [2023-01-28 02:33:02,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1293 transitions. [2023-01-28 02:33:02,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:02,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1293 transitions. [2023-01-28 02:33:02,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.71428571428572) internal successors, (1293), 7 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:02,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:02,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:02,156 INFO L175 Difference]: Start difference. First operand has 421 places, 548 transitions, 14866 flow. Second operand 7 states and 1293 transitions. [2023-01-28 02:33:02,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 768 transitions, 20458 flow [2023-01-28 02:33:02,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 768 transitions, 19519 flow, removed 35 selfloop flow, removed 19 redundant places. [2023-01-28 02:33:02,576 INFO L231 Difference]: Finished difference. Result has 411 places, 565 transitions, 14730 flow [2023-01-28 02:33:02,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=14210, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14730, PETRI_PLACES=411, PETRI_TRANSITIONS=565} [2023-01-28 02:33:02,576 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 385 predicate places. [2023-01-28 02:33:02,577 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 565 transitions, 14730 flow [2023-01-28 02:33:02,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 174.9) internal successors, (1749), 10 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:02,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:02,577 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:02,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:02,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:02,780 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:02,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1097738867, now seen corresponding path program 1 times [2023-01-28 02:33:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:02,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763222848] [2023-01-28 02:33:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:02,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:03,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:03,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763222848] [2023-01-28 02:33:03,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763222848] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:03,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:33:03,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:33:03,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932988030] [2023-01-28 02:33:03,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:03,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:33:03,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:03,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:33:03,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:33:03,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:33:03,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 565 transitions, 14730 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:03,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:03,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:33:03,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:04,420 INFO L130 PetriNetUnfolder]: 2838/5023 cut-off events. [2023-01-28 02:33:04,421 INFO L131 PetriNetUnfolder]: For 108702/108702 co-relation queries the response was YES. [2023-01-28 02:33:04,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43516 conditions, 5023 events. 2838/5023 cut-off events. For 108702/108702 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30024 event pairs, 499 based on Foata normal form. 8/5031 useless extension candidates. Maximal degree in co-relation 43333. Up to 2125 conditions per place. [2023-01-28 02:33:04,483 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 353 selfloop transitions, 299 changer transitions 5/657 dead transitions. [2023-01-28 02:33:04,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 657 transitions, 17245 flow [2023-01-28 02:33:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:33:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:33:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1756 transitions. [2023-01-28 02:33:04,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569105691056911 [2023-01-28 02:33:04,486 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1756 transitions. [2023-01-28 02:33:04,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1756 transitions. [2023-01-28 02:33:04,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:04,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1756 transitions. [2023-01-28 02:33:04,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.33333333333334) internal successors, (1756), 12 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:04,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:04,491 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:04,491 INFO L175 Difference]: Start difference. First operand has 411 places, 565 transitions, 14730 flow. Second operand 12 states and 1756 transitions. [2023-01-28 02:33:04,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 657 transitions, 17245 flow [2023-01-28 02:33:04,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 657 transitions, 17137 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 02:33:04,945 INFO L231 Difference]: Finished difference. Result has 425 places, 594 transitions, 16252 flow [2023-01-28 02:33:04,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=14602, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16252, PETRI_PLACES=425, PETRI_TRANSITIONS=594} [2023-01-28 02:33:04,946 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 399 predicate places. [2023-01-28 02:33:04,946 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 594 transitions, 16252 flow [2023-01-28 02:33:04,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:04,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:04,946 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:04,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-01-28 02:33:04,947 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:04,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash 218436905, now seen corresponding path program 2 times [2023-01-28 02:33:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:04,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243469581] [2023-01-28 02:33:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:05,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:05,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243469581] [2023-01-28 02:33:05,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243469581] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:05,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730592449] [2023-01-28 02:33:05,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:33:05,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:05,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:05,215 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:05,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 02:33:05,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:33:05,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:05,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 02:33:05,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:05,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:05,621 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 02:33:05,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-01-28 02:33:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:05,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730592449] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:05,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:33:05,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 18 [2023-01-28 02:33:05,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994989349] [2023-01-28 02:33:05,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:05,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:33:05,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:33:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-01-28 02:33:05,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-28 02:33:05,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 594 transitions, 16252 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:05,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:05,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-28 02:33:05,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:07,064 INFO L130 PetriNetUnfolder]: 2848/5033 cut-off events. [2023-01-28 02:33:07,064 INFO L131 PetriNetUnfolder]: For 118126/118126 co-relation queries the response was YES. [2023-01-28 02:33:07,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45277 conditions, 5033 events. 2848/5033 cut-off events. For 118126/118126 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 29971 event pairs, 618 based on Foata normal form. 8/5041 useless extension candidates. Maximal degree in co-relation 45092. Up to 2903 conditions per place. [2023-01-28 02:33:07,135 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 335 selfloop transitions, 297 changer transitions 0/632 dead transitions. [2023-01-28 02:33:07,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 632 transitions, 17924 flow [2023-01-28 02:33:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:33:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:33:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1247 transitions. [2023-01-28 02:33:07,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3801829268292683 [2023-01-28 02:33:07,137 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1247 transitions. [2023-01-28 02:33:07,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1247 transitions. [2023-01-28 02:33:07,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:07,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1247 transitions. [2023-01-28 02:33:07,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 155.875) internal successors, (1247), 8 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:07,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:07,139 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:07,139 INFO L175 Difference]: Start difference. First operand has 425 places, 594 transitions, 16252 flow. Second operand 8 states and 1247 transitions. [2023-01-28 02:33:07,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 632 transitions, 17924 flow [2023-01-28 02:33:07,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 632 transitions, 17744 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-01-28 02:33:07,703 INFO L231 Difference]: Finished difference. Result has 424 places, 598 transitions, 16844 flow [2023-01-28 02:33:07,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16072, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16844, PETRI_PLACES=424, PETRI_TRANSITIONS=598} [2023-01-28 02:33:07,704 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 398 predicate places. [2023-01-28 02:33:07,704 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 598 transitions, 16844 flow [2023-01-28 02:33:07,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:07,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:07,704 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:07,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:07,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-01-28 02:33:07,905 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:07,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:07,906 INFO L85 PathProgramCache]: Analyzing trace with hash -179770209, now seen corresponding path program 3 times [2023-01-28 02:33:07,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:07,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975273437] [2023-01-28 02:33:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:07,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:08,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975273437] [2023-01-28 02:33:08,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975273437] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019966362] [2023-01-28 02:33:08,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:33:08,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:08,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:08,185 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:08,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 02:33:08,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:33:08,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:08,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 02:33:08,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:08,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:08,598 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 02:33:08,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-01-28 02:33:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019966362] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:08,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:33:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 17 [2023-01-28 02:33:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520859449] [2023-01-28 02:33:08,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:08,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:33:08,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:08,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:33:08,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-01-28 02:33:08,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-28 02:33:08,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 598 transitions, 16844 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:08,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:08,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-28 02:33:08,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:09,951 INFO L130 PetriNetUnfolder]: 2850/5039 cut-off events. [2023-01-28 02:33:09,951 INFO L131 PetriNetUnfolder]: For 123178/123178 co-relation queries the response was YES. [2023-01-28 02:33:09,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46033 conditions, 5039 events. 2850/5039 cut-off events. For 123178/123178 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 30079 event pairs, 634 based on Foata normal form. 4/5043 useless extension candidates. Maximal degree in co-relation 45844. Up to 2907 conditions per place. [2023-01-28 02:33:10,020 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 322 selfloop transitions, 302 changer transitions 0/624 dead transitions. [2023-01-28 02:33:10,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 624 transitions, 18310 flow [2023-01-28 02:33:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:33:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:33:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1239 transitions. [2023-01-28 02:33:10,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777439024390244 [2023-01-28 02:33:10,021 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1239 transitions. [2023-01-28 02:33:10,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1239 transitions. [2023-01-28 02:33:10,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:10,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1239 transitions. [2023-01-28 02:33:10,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.875) internal successors, (1239), 8 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:10,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:10,024 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:10,024 INFO L175 Difference]: Start difference. First operand has 424 places, 598 transitions, 16844 flow. Second operand 8 states and 1239 transitions. [2023-01-28 02:33:10,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 624 transitions, 18310 flow [2023-01-28 02:33:10,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 624 transitions, 17964 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-01-28 02:33:10,618 INFO L231 Difference]: Finished difference. Result has 427 places, 601 transitions, 17243 flow [2023-01-28 02:33:10,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16500, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17243, PETRI_PLACES=427, PETRI_TRANSITIONS=601} [2023-01-28 02:33:10,619 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 401 predicate places. [2023-01-28 02:33:10,619 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 601 transitions, 17243 flow [2023-01-28 02:33:10,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:10,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:10,619 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:10,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:10,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-01-28 02:33:10,820 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:10,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1438672969, now seen corresponding path program 4 times [2023-01-28 02:33:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863928237] [2023-01-28 02:33:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:11,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863928237] [2023-01-28 02:33:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863928237] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914318194] [2023-01-28 02:33:11,084 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:33:11,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:11,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:11,085 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:11,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 02:33:11,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:33:11,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:11,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 02:33:11,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:11,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:11,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2023-01-28 02:33:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:11,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:13,468 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 02:33:13,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-01-28 02:33:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:13,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914318194] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:33:13,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:33:13,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-01-28 02:33:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285373238] [2023-01-28 02:33:13,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:33:13,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 02:33:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:13,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 02:33:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=272, Unknown=1, NotChecked=0, Total=342 [2023-01-28 02:33:13,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:33:13,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 601 transitions, 17243 flow. Second operand has 19 states, 19 states have (on average 139.26315789473685) internal successors, (2646), 19 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:13,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:13,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:33:13,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:15,103 INFO L130 PetriNetUnfolder]: 2880/5089 cut-off events. [2023-01-28 02:33:15,103 INFO L131 PetriNetUnfolder]: For 129461/129461 co-relation queries the response was YES. [2023-01-28 02:33:15,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47251 conditions, 5089 events. 2880/5089 cut-off events. For 129461/129461 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30388 event pairs, 639 based on Foata normal form. 8/5097 useless extension candidates. Maximal degree in co-relation 47061. Up to 2915 conditions per place. [2023-01-28 02:33:15,177 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 324 selfloop transitions, 324 changer transitions 0/648 dead transitions. [2023-01-28 02:33:15,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 648 transitions, 19179 flow [2023-01-28 02:33:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:33:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:33:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1874 transitions. [2023-01-28 02:33:15,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35159474671669794 [2023-01-28 02:33:15,179 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1874 transitions. [2023-01-28 02:33:15,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1874 transitions. [2023-01-28 02:33:15,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:15,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1874 transitions. [2023-01-28 02:33:15,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.15384615384616) internal successors, (1874), 13 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:15,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:15,183 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:15,183 INFO L175 Difference]: Start difference. First operand has 427 places, 601 transitions, 17243 flow. Second operand 13 states and 1874 transitions. [2023-01-28 02:33:15,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 648 transitions, 19179 flow [2023-01-28 02:33:15,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 648 transitions, 18694 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:33:15,795 INFO L231 Difference]: Finished difference. Result has 436 places, 611 transitions, 17779 flow [2023-01-28 02:33:15,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16768, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17779, PETRI_PLACES=436, PETRI_TRANSITIONS=611} [2023-01-28 02:33:15,795 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 410 predicate places. [2023-01-28 02:33:15,795 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 611 transitions, 17779 flow [2023-01-28 02:33:15,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 139.26315789473685) internal successors, (2646), 19 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:15,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:15,796 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:15,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:15,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:15,996 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:15,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:15,997 INFO L85 PathProgramCache]: Analyzing trace with hash -699072181, now seen corresponding path program 5 times [2023-01-28 02:33:15,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:15,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513681995] [2023-01-28 02:33:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:15,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:16,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513681995] [2023-01-28 02:33:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513681995] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:16,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:33:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:33:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358211241] [2023-01-28 02:33:16,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:16,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:33:16,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:33:16,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:33:16,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:33:16,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 611 transitions, 17779 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:16,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:16,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:33:16,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:17,695 INFO L130 PetriNetUnfolder]: 2864/5069 cut-off events. [2023-01-28 02:33:17,695 INFO L131 PetriNetUnfolder]: For 130616/130616 co-relation queries the response was YES. [2023-01-28 02:33:17,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47354 conditions, 5069 events. 2864/5069 cut-off events. For 130616/130616 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30347 event pairs, 504 based on Foata normal form. 8/5077 useless extension candidates. Maximal degree in co-relation 47162. Up to 2201 conditions per place. [2023-01-28 02:33:17,770 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 281 selfloop transitions, 371 changer transitions 0/652 dead transitions. [2023-01-28 02:33:17,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 652 transitions, 19392 flow [2023-01-28 02:33:17,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:33:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:33:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1888 transitions. [2023-01-28 02:33:17,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542213883677298 [2023-01-28 02:33:17,772 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1888 transitions. [2023-01-28 02:33:17,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1888 transitions. [2023-01-28 02:33:17,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:17,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1888 transitions. [2023-01-28 02:33:17,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.23076923076923) internal successors, (1888), 13 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:17,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:17,776 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:17,776 INFO L175 Difference]: Start difference. First operand has 436 places, 611 transitions, 17779 flow. Second operand 13 states and 1888 transitions. [2023-01-28 02:33:17,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 652 transitions, 19392 flow [2023-01-28 02:33:18,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 652 transitions, 18771 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-01-28 02:33:18,383 INFO L231 Difference]: Finished difference. Result has 443 places, 613 transitions, 18154 flow [2023-01-28 02:33:18,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17086, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18154, PETRI_PLACES=443, PETRI_TRANSITIONS=613} [2023-01-28 02:33:18,384 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 417 predicate places. [2023-01-28 02:33:18,384 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 613 transitions, 18154 flow [2023-01-28 02:33:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:18,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:18,384 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:18,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-01-28 02:33:18,384 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:18,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash 333984891, now seen corresponding path program 6 times [2023-01-28 02:33:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:18,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129914382] [2023-01-28 02:33:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:18,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:18,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:18,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129914382] [2023-01-28 02:33:18,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129914382] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:18,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942879843] [2023-01-28 02:33:18,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:33:18,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:18,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:18,703 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:18,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 02:33:18,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 02:33:18,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:18,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 02:33:18,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:19,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 02:33:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:19,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:19,069 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:33:19,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 02:33:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942879843] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:33:19,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:33:19,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-28 02:33:19,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200326344] [2023-01-28 02:33:19,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:33:19,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 02:33:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:19,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 02:33:19,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-01-28 02:33:19,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:33:19,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 613 transitions, 18154 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:19,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:19,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:33:19,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:20,576 INFO L130 PetriNetUnfolder]: 2885/5106 cut-off events. [2023-01-28 02:33:20,576 INFO L131 PetriNetUnfolder]: For 137626/137626 co-relation queries the response was YES. [2023-01-28 02:33:20,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48441 conditions, 5106 events. 2885/5106 cut-off events. For 137626/137626 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30549 event pairs, 626 based on Foata normal form. 10/5116 useless extension candidates. Maximal degree in co-relation 48248. Up to 2927 conditions per place. [2023-01-28 02:33:20,652 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 311 selfloop transitions, 347 changer transitions 0/658 dead transitions. [2023-01-28 02:33:20,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 658 transitions, 20119 flow [2023-01-28 02:33:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:33:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:33:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1879 transitions. [2023-01-28 02:33:20,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3525328330206379 [2023-01-28 02:33:20,654 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1879 transitions. [2023-01-28 02:33:20,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1879 transitions. [2023-01-28 02:33:20,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:20,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1879 transitions. [2023-01-28 02:33:20,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.53846153846155) internal successors, (1879), 13 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:20,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:20,658 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:20,658 INFO L175 Difference]: Start difference. First operand has 443 places, 613 transitions, 18154 flow. Second operand 13 states and 1879 transitions. [2023-01-28 02:33:20,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 658 transitions, 20119 flow [2023-01-28 02:33:21,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 658 transitions, 19460 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-01-28 02:33:21,345 INFO L231 Difference]: Finished difference. Result has 447 places, 621 transitions, 18546 flow [2023-01-28 02:33:21,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17458, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18546, PETRI_PLACES=447, PETRI_TRANSITIONS=621} [2023-01-28 02:33:21,346 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 421 predicate places. [2023-01-28 02:33:21,346 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 621 transitions, 18546 flow [2023-01-28 02:33:21,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:21,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:21,346 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:21,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:21,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:21,547 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:21,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:21,548 INFO L85 PathProgramCache]: Analyzing trace with hash -61596447, now seen corresponding path program 7 times [2023-01-28 02:33:21,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:21,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634775226] [2023-01-28 02:33:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:21,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:21,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634775226] [2023-01-28 02:33:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634775226] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251666220] [2023-01-28 02:33:21,813 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:33:21,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:21,814 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:21,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 02:33:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:22,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 02:33:22,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:22,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 02:33:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:22,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:22,168 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:33:22,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 02:33:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:22,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251666220] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:33:22,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:33:22,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-28 02:33:22,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292957132] [2023-01-28 02:33:22,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:33:22,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 02:33:22,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 02:33:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-01-28 02:33:22,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:33:22,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 621 transitions, 18546 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:22,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:22,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:33:22,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:23,797 INFO L130 PetriNetUnfolder]: 2856/5053 cut-off events. [2023-01-28 02:33:23,797 INFO L131 PetriNetUnfolder]: For 135880/135880 co-relation queries the response was YES. [2023-01-28 02:33:23,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48127 conditions, 5053 events. 2856/5053 cut-off events. For 135880/135880 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30096 event pairs, 593 based on Foata normal form. 10/5063 useless extension candidates. Maximal degree in co-relation 47933. Up to 2927 conditions per place. [2023-01-28 02:33:23,874 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 327 selfloop transitions, 341 changer transitions 0/668 dead transitions. [2023-01-28 02:33:23,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 668 transitions, 20307 flow [2023-01-28 02:33:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:33:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:33:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2028 transitions. [2023-01-28 02:33:23,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533101045296167 [2023-01-28 02:33:23,876 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2028 transitions. [2023-01-28 02:33:23,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2028 transitions. [2023-01-28 02:33:23,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:23,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2028 transitions. [2023-01-28 02:33:23,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 144.85714285714286) internal successors, (2028), 14 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:23,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:23,880 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:23,880 INFO L175 Difference]: Start difference. First operand has 447 places, 621 transitions, 18546 flow. Second operand 14 states and 2028 transitions. [2023-01-28 02:33:23,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 668 transitions, 20307 flow [2023-01-28 02:33:24,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 668 transitions, 19768 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-28 02:33:24,669 INFO L231 Difference]: Finished difference. Result has 456 places, 621 transitions, 18763 flow [2023-01-28 02:33:24,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17934, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=18763, PETRI_PLACES=456, PETRI_TRANSITIONS=621} [2023-01-28 02:33:24,669 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-01-28 02:33:24,669 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 621 transitions, 18763 flow [2023-01-28 02:33:24,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:24,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:24,670 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:24,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:24,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-01-28 02:33:24,870 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:24,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 294394613, now seen corresponding path program 8 times [2023-01-28 02:33:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303070048] [2023-01-28 02:33:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:25,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303070048] [2023-01-28 02:33:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303070048] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679952110] [2023-01-28 02:33:25,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:33:25,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:25,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:25,142 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:25,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 02:33:25,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:33:25,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:25,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 02:33:25,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:25,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 02:33:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:25,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:25,518 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 02:33:25,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-01-28 02:33:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:25,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679952110] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:33:25,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:33:25,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-28 02:33:25,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492373341] [2023-01-28 02:33:25,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:33:25,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 02:33:25,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:25,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 02:33:25,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-01-28 02:33:25,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:33:25,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 621 transitions, 18763 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:25,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:25,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:33:25,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:27,282 INFO L130 PetriNetUnfolder]: 2846/5033 cut-off events. [2023-01-28 02:33:27,282 INFO L131 PetriNetUnfolder]: For 132951/132951 co-relation queries the response was YES. [2023-01-28 02:33:27,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48249 conditions, 5033 events. 2846/5033 cut-off events. For 132951/132951 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29810 event pairs, 258 based on Foata normal form. 4/5037 useless extension candidates. Maximal degree in co-relation 48051. Up to 1656 conditions per place. [2023-01-28 02:33:27,344 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 307 selfloop transitions, 357 changer transitions 0/664 dead transitions. [2023-01-28 02:33:27,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 664 transitions, 20365 flow [2023-01-28 02:33:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:33:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:33:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1885 transitions. [2023-01-28 02:33:27,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35365853658536583 [2023-01-28 02:33:27,346 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1885 transitions. [2023-01-28 02:33:27,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1885 transitions. [2023-01-28 02:33:27,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:27,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1885 transitions. [2023-01-28 02:33:27,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.0) internal successors, (1885), 13 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:27,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:27,350 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:27,350 INFO L175 Difference]: Start difference. First operand has 456 places, 621 transitions, 18763 flow. Second operand 13 states and 1885 transitions. [2023-01-28 02:33:27,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 664 transitions, 20365 flow [2023-01-28 02:33:27,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 664 transitions, 19331 flow, removed 13 selfloop flow, removed 13 redundant places. [2023-01-28 02:33:27,947 INFO L231 Difference]: Finished difference. Result has 457 places, 621 transitions, 18455 flow [2023-01-28 02:33:27,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17695, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18455, PETRI_PLACES=457, PETRI_TRANSITIONS=621} [2023-01-28 02:33:27,948 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 431 predicate places. [2023-01-28 02:33:27,948 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 621 transitions, 18455 flow [2023-01-28 02:33:27,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:27,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:27,948 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:27,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:28,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:28,150 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:28,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:28,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1174875799, now seen corresponding path program 9 times [2023-01-28 02:33:28,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:28,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567035196] [2023-01-28 02:33:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:28,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:33:28,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567035196] [2023-01-28 02:33:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567035196] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318579389] [2023-01-28 02:33:28,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:33:28,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:28,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:28,921 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:28,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 02:33:29,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:33:29,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:29,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 02:33:29,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:29,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 02:33:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:29,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:29,342 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:33:29,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 02:33:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:29,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318579389] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:33:29,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:33:29,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 7] total 25 [2023-01-28 02:33:29,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279347542] [2023-01-28 02:33:29,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:33:29,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 02:33:29,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:29,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 02:33:29,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-01-28 02:33:29,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 410 [2023-01-28 02:33:29,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 621 transitions, 18455 flow. Second operand has 25 states, 25 states have (on average 114.2) internal successors, (2855), 25 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:29,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:29,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 410 [2023-01-28 02:33:29,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:31,309 INFO L130 PetriNetUnfolder]: 2858/5053 cut-off events. [2023-01-28 02:33:31,309 INFO L131 PetriNetUnfolder]: For 136263/136263 co-relation queries the response was YES. [2023-01-28 02:33:31,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48375 conditions, 5053 events. 2858/5053 cut-off events. For 136263/136263 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29984 event pairs, 488 based on Foata normal form. 4/5057 useless extension candidates. Maximal degree in co-relation 48181. Up to 1656 conditions per place. [2023-01-28 02:33:31,374 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 309 selfloop transitions, 366 changer transitions 0/675 dead transitions. [2023-01-28 02:33:31,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 675 transitions, 20458 flow [2023-01-28 02:33:31,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 02:33:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 02:33:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1903 transitions. [2023-01-28 02:33:31,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29009146341463415 [2023-01-28 02:33:31,376 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1903 transitions. [2023-01-28 02:33:31,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1903 transitions. [2023-01-28 02:33:31,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:31,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1903 transitions. [2023-01-28 02:33:31,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.9375) internal successors, (1903), 16 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:31,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:31,381 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:31,381 INFO L175 Difference]: Start difference. First operand has 457 places, 621 transitions, 18455 flow. Second operand 16 states and 1903 transitions. [2023-01-28 02:33:31,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 675 transitions, 20458 flow [2023-01-28 02:33:31,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 675 transitions, 20311 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-01-28 02:33:31,980 INFO L231 Difference]: Finished difference. Result has 467 places, 628 transitions, 19315 flow [2023-01-28 02:33:31,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18308, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19315, PETRI_PLACES=467, PETRI_TRANSITIONS=628} [2023-01-28 02:33:31,981 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 441 predicate places. [2023-01-28 02:33:31,981 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 628 transitions, 19315 flow [2023-01-28 02:33:31,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 114.2) internal successors, (2855), 25 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:31,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:31,982 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:31,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:32,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2023-01-28 02:33:32,188 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:32,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:32,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1955066157, now seen corresponding path program 10 times [2023-01-28 02:33:32,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:32,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183936656] [2023-01-28 02:33:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:32,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:32,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:32,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183936656] [2023-01-28 02:33:32,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183936656] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:32,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459231030] [2023-01-28 02:33:32,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:33:32,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:32,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:32,504 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:32,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-28 02:33:32,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:33:32,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:32,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 02:33:32,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:32,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:32,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2023-01-28 02:33:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:32,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:32,854 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:33:32,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 02:33:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:32,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459231030] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:33:32,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:33:32,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-01-28 02:33:32,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346597348] [2023-01-28 02:33:32,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:33:32,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 02:33:32,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:32,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 02:33:32,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-01-28 02:33:32,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:33:32,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 628 transitions, 19315 flow. Second operand has 19 states, 19 states have (on average 139.3684210526316) internal successors, (2648), 19 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:32,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:32,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:33:32,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:34,490 INFO L130 PetriNetUnfolder]: 2864/5063 cut-off events. [2023-01-28 02:33:34,490 INFO L131 PetriNetUnfolder]: For 146806/146806 co-relation queries the response was YES. [2023-01-28 02:33:34,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49480 conditions, 5063 events. 2864/5063 cut-off events. For 146806/146806 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30083 event pairs, 508 based on Foata normal form. 4/5067 useless extension candidates. Maximal degree in co-relation 49282. Up to 1656 conditions per place. [2023-01-28 02:33:34,562 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 295 selfloop transitions, 366 changer transitions 0/661 dead transitions. [2023-01-28 02:33:34,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 661 transitions, 20951 flow [2023-01-28 02:33:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:33:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:33:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1459 transitions. [2023-01-28 02:33:34,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35585365853658535 [2023-01-28 02:33:34,564 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1459 transitions. [2023-01-28 02:33:34,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1459 transitions. [2023-01-28 02:33:34,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:34,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1459 transitions. [2023-01-28 02:33:34,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.9) internal successors, (1459), 10 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:34,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:34,566 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:34,567 INFO L175 Difference]: Start difference. First operand has 467 places, 628 transitions, 19315 flow. Second operand 10 states and 1459 transitions. [2023-01-28 02:33:34,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 661 transitions, 20951 flow [2023-01-28 02:33:35,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 661 transitions, 20211 flow, removed 20 selfloop flow, removed 12 redundant places. [2023-01-28 02:33:35,184 INFO L231 Difference]: Finished difference. Result has 466 places, 630 transitions, 19733 flow [2023-01-28 02:33:35,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18577, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19733, PETRI_PLACES=466, PETRI_TRANSITIONS=630} [2023-01-28 02:33:35,184 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 440 predicate places. [2023-01-28 02:33:35,185 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 630 transitions, 19733 flow [2023-01-28 02:33:35,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 139.3684210526316) internal successors, (2648), 19 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:35,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:35,185 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:35,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:35,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:35,386 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:35,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:35,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2135374965, now seen corresponding path program 11 times [2023-01-28 02:33:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499387705] [2023-01-28 02:33:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:35,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:35,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499387705] [2023-01-28 02:33:35,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499387705] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:35,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:33:35,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:33:35,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900527653] [2023-01-28 02:33:35,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:35,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:33:35,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:33:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:33:35,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:33:35,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 630 transitions, 19733 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:35,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:35,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:33:35,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:37,098 INFO L130 PetriNetUnfolder]: 2860/5059 cut-off events. [2023-01-28 02:33:37,098 INFO L131 PetriNetUnfolder]: For 154616/154616 co-relation queries the response was YES. [2023-01-28 02:33:37,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49898 conditions, 5059 events. 2860/5059 cut-off events. For 154616/154616 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30056 event pairs, 660 based on Foata normal form. 4/5063 useless extension candidates. Maximal degree in co-relation 49705. Up to 2446 conditions per place. [2023-01-28 02:33:37,169 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 415 selfloop transitions, 238 changer transitions 4/657 dead transitions. [2023-01-28 02:33:37,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 657 transitions, 21220 flow [2023-01-28 02:33:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:33:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:33:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1446 transitions. [2023-01-28 02:33:37,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526829268292683 [2023-01-28 02:33:37,171 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1446 transitions. [2023-01-28 02:33:37,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1446 transitions. [2023-01-28 02:33:37,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:37,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1446 transitions. [2023-01-28 02:33:37,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.6) internal successors, (1446), 10 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:37,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:37,174 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:37,174 INFO L175 Difference]: Start difference. First operand has 466 places, 630 transitions, 19733 flow. Second operand 10 states and 1446 transitions. [2023-01-28 02:33:37,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 657 transitions, 21220 flow [2023-01-28 02:33:37,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 657 transitions, 20634 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-01-28 02:33:37,839 INFO L231 Difference]: Finished difference. Result has 466 places, 628 transitions, 19587 flow [2023-01-28 02:33:37,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19135, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19587, PETRI_PLACES=466, PETRI_TRANSITIONS=628} [2023-01-28 02:33:37,839 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 440 predicate places. [2023-01-28 02:33:37,839 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 628 transitions, 19587 flow [2023-01-28 02:33:37,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:37,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:37,840 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:37,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-01-28 02:33:37,840 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:37,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash 721457961, now seen corresponding path program 12 times [2023-01-28 02:33:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:37,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497544431] [2023-01-28 02:33:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:38,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497544431] [2023-01-28 02:33:38,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497544431] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041412883] [2023-01-28 02:33:38,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:33:38,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:38,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:38,105 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:38,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-28 02:33:38,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 02:33:38,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:38,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 02:33:38,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:38,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:38,521 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:33:38,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 02:33:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:38,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041412883] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:38,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:33:38,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 17 [2023-01-28 02:33:38,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822223016] [2023-01-28 02:33:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:38,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:33:38,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:38,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:33:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-01-28 02:33:38,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-28 02:33:38,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 628 transitions, 19587 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:38,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:38,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-28 02:33:38,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:39,935 INFO L130 PetriNetUnfolder]: 2849/5034 cut-off events. [2023-01-28 02:33:39,935 INFO L131 PetriNetUnfolder]: For 153237/153237 co-relation queries the response was YES. [2023-01-28 02:33:39,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49647 conditions, 5034 events. 2849/5034 cut-off events. For 153237/153237 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 29821 event pairs, 506 based on Foata normal form. 4/5038 useless extension candidates. Maximal degree in co-relation 49454. Up to 1656 conditions per place. [2023-01-28 02:33:40,012 INFO L137 encePairwiseOnDemand]: 402/410 looper letters, 292 selfloop transitions, 359 changer transitions 0/651 dead transitions. [2023-01-28 02:33:40,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 651 transitions, 20966 flow [2023-01-28 02:33:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:33:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:33:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1250 transitions. [2023-01-28 02:33:40,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38109756097560976 [2023-01-28 02:33:40,014 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1250 transitions. [2023-01-28 02:33:40,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1250 transitions. [2023-01-28 02:33:40,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:40,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1250 transitions. [2023-01-28 02:33:40,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.25) internal successors, (1250), 8 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:40,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:40,017 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:40,017 INFO L175 Difference]: Start difference. First operand has 466 places, 628 transitions, 19587 flow. Second operand 8 states and 1250 transitions. [2023-01-28 02:33:40,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 651 transitions, 20966 flow [2023-01-28 02:33:40,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 651 transitions, 20081 flow, removed 8 selfloop flow, removed 23 redundant places. [2023-01-28 02:33:40,723 INFO L231 Difference]: Finished difference. Result has 447 places, 625 transitions, 19339 flow [2023-01-28 02:33:40,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18621, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19339, PETRI_PLACES=447, PETRI_TRANSITIONS=625} [2023-01-28 02:33:40,724 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 421 predicate places. [2023-01-28 02:33:40,724 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 625 transitions, 19339 flow [2023-01-28 02:33:40,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:40,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:40,724 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:40,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:40,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:40,925 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:40,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2023468011, now seen corresponding path program 13 times [2023-01-28 02:33:40,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:40,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448715780] [2023-01-28 02:33:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:40,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:41,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:41,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448715780] [2023-01-28 02:33:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448715780] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:41,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:33:41,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:33:41,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137625262] [2023-01-28 02:33:41,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:41,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:33:41,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:41,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:33:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:33:41,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-28 02:33:41,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 625 transitions, 19339 flow. Second operand has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:41,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:41,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-28 02:33:41,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:42,734 INFO L130 PetriNetUnfolder]: 2910/5144 cut-off events. [2023-01-28 02:33:42,734 INFO L131 PetriNetUnfolder]: For 150473/150473 co-relation queries the response was YES. [2023-01-28 02:33:42,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50759 conditions, 5144 events. 2910/5144 cut-off events. For 150473/150473 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30782 event pairs, 503 based on Foata normal form. 4/5148 useless extension candidates. Maximal degree in co-relation 50580. Up to 2180 conditions per place. [2023-01-28 02:33:42,803 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 337 selfloop transitions, 359 changer transitions 4/700 dead transitions. [2023-01-28 02:33:42,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 700 transitions, 21820 flow [2023-01-28 02:33:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:33:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:33:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1699 transitions. [2023-01-28 02:33:42,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34532520325203253 [2023-01-28 02:33:42,805 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1699 transitions. [2023-01-28 02:33:42,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1699 transitions. [2023-01-28 02:33:42,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:42,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1699 transitions. [2023-01-28 02:33:42,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.58333333333334) internal successors, (1699), 12 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:42,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:42,808 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:42,808 INFO L175 Difference]: Start difference. First operand has 447 places, 625 transitions, 19339 flow. Second operand 12 states and 1699 transitions. [2023-01-28 02:33:42,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 700 transitions, 21820 flow [2023-01-28 02:33:43,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 700 transitions, 21232 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 02:33:43,458 INFO L231 Difference]: Finished difference. Result has 456 places, 640 transitions, 20257 flow [2023-01-28 02:33:43,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18776, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20257, PETRI_PLACES=456, PETRI_TRANSITIONS=640} [2023-01-28 02:33:43,458 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-01-28 02:33:43,459 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 640 transitions, 20257 flow [2023-01-28 02:33:43,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:43,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:43,459 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:43,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-01-28 02:33:43,459 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:43,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1992329379, now seen corresponding path program 14 times [2023-01-28 02:33:43,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:43,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702791301] [2023-01-28 02:33:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:43,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:44,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:44,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702791301] [2023-01-28 02:33:44,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702791301] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:44,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594370476] [2023-01-28 02:33:44,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:33:44,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:44,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:44,809 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:44,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-28 02:33:45,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:33:45,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:45,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 02:33:45,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:45,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:33:45,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:33:45,422 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 02:33:45,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-01-28 02:33:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:45,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:33:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594370476] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:45,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:33:45,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-01-28 02:33:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932400489] [2023-01-28 02:33:45,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:45,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:33:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:33:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:33:45,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 02:33:45,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 640 transitions, 20257 flow. Second operand has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:45,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:45,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 02:33:45,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:47,249 INFO L130 PetriNetUnfolder]: 2905/5135 cut-off events. [2023-01-28 02:33:47,249 INFO L131 PetriNetUnfolder]: For 150455/150455 co-relation queries the response was YES. [2023-01-28 02:33:47,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50959 conditions, 5135 events. 2905/5135 cut-off events. For 150455/150455 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30733 event pairs, 489 based on Foata normal form. 4/5139 useless extension candidates. Maximal degree in co-relation 50846. Up to 2464 conditions per place. [2023-01-28 02:33:47,316 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 288 selfloop transitions, 384 changer transitions 4/676 dead transitions. [2023-01-28 02:33:47,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 676 transitions, 21777 flow [2023-01-28 02:33:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:33:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:33:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1405 transitions. [2023-01-28 02:33:47,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3426829268292683 [2023-01-28 02:33:47,317 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1405 transitions. [2023-01-28 02:33:47,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1405 transitions. [2023-01-28 02:33:47,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:47,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1405 transitions. [2023-01-28 02:33:47,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.5) internal successors, (1405), 10 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:47,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:47,320 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:47,320 INFO L175 Difference]: Start difference. First operand has 456 places, 640 transitions, 20257 flow. Second operand 10 states and 1405 transitions. [2023-01-28 02:33:47,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 676 transitions, 21777 flow [2023-01-28 02:33:47,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 676 transitions, 21652 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 02:33:47,956 INFO L231 Difference]: Finished difference. Result has 460 places, 638 transitions, 20834 flow [2023-01-28 02:33:47,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20098, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20834, PETRI_PLACES=460, PETRI_TRANSITIONS=638} [2023-01-28 02:33:47,957 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-01-28 02:33:47,957 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 638 transitions, 20834 flow [2023-01-28 02:33:47,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:47,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:47,957 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:47,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:48,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:48,164 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:48,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash -302565915, now seen corresponding path program 15 times [2023-01-28 02:33:48,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:48,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133960749] [2023-01-28 02:33:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:48,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:48,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133960749] [2023-01-28 02:33:48,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133960749] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:48,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:33:48,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:33:48,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886248306] [2023-01-28 02:33:48,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:48,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:33:48,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:48,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:33:48,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:33:48,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-28 02:33:48,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 638 transitions, 20834 flow. Second operand has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:48,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:48,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-28 02:33:48,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:50,113 INFO L130 PetriNetUnfolder]: 2910/5140 cut-off events. [2023-01-28 02:33:50,113 INFO L131 PetriNetUnfolder]: For 160652/160652 co-relation queries the response was YES. [2023-01-28 02:33:50,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52254 conditions, 5140 events. 2910/5140 cut-off events. For 160652/160652 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30727 event pairs, 491 based on Foata normal form. 4/5144 useless extension candidates. Maximal degree in co-relation 52141. Up to 2510 conditions per place. [2023-01-28 02:33:50,177 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 298 selfloop transitions, 395 changer transitions 0/693 dead transitions. [2023-01-28 02:33:50,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 693 transitions, 22784 flow [2023-01-28 02:33:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:33:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:33:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1693 transitions. [2023-01-28 02:33:50,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3441056910569106 [2023-01-28 02:33:50,179 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1693 transitions. [2023-01-28 02:33:50,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1693 transitions. [2023-01-28 02:33:50,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:50,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1693 transitions. [2023-01-28 02:33:50,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.08333333333334) internal successors, (1693), 12 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:50,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:50,182 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:50,183 INFO L175 Difference]: Start difference. First operand has 460 places, 638 transitions, 20834 flow. Second operand 12 states and 1693 transitions. [2023-01-28 02:33:50,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 693 transitions, 22784 flow [2023-01-28 02:33:50,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 693 transitions, 21717 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-01-28 02:33:50,822 INFO L231 Difference]: Finished difference. Result has 459 places, 640 transitions, 20684 flow [2023-01-28 02:33:50,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19780, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20684, PETRI_PLACES=459, PETRI_TRANSITIONS=640} [2023-01-28 02:33:50,823 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 433 predicate places. [2023-01-28 02:33:50,823 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 640 transitions, 20684 flow [2023-01-28 02:33:50,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:50,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:50,823 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:50,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-01-28 02:33:50,823 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:50,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2122392975, now seen corresponding path program 16 times [2023-01-28 02:33:50,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:50,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454070496] [2023-01-28 02:33:50,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:50,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:52,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:52,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454070496] [2023-01-28 02:33:52,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454070496] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:52,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681649785] [2023-01-28 02:33:52,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:33:52,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:52,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:52,011 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:52,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-28 02:33:52,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:33:52,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:52,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:33:52,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:52,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:33:52,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:33:52,562 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 02:33:52,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-01-28 02:33:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:52,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:33:52,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681649785] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:52,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:33:52,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-01-28 02:33:52,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843730228] [2023-01-28 02:33:52,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:52,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:33:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:33:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:33:52,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 410 [2023-01-28 02:33:52,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 640 transitions, 20684 flow. Second operand has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:52,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:52,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 410 [2023-01-28 02:33:52,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:54,572 INFO L130 PetriNetUnfolder]: 3116/5474 cut-off events. [2023-01-28 02:33:54,572 INFO L131 PetriNetUnfolder]: For 167679/167679 co-relation queries the response was YES. [2023-01-28 02:33:54,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54709 conditions, 5474 events. 3116/5474 cut-off events. For 167679/167679 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 32946 event pairs, 577 based on Foata normal form. 4/5478 useless extension candidates. Maximal degree in co-relation 54595. Up to 1618 conditions per place. [2023-01-28 02:33:54,642 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 293 selfloop transitions, 407 changer transitions 0/700 dead transitions. [2023-01-28 02:33:54,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 700 transitions, 22882 flow [2023-01-28 02:33:54,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:33:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:33:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1515 transitions. [2023-01-28 02:33:54,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33592017738359203 [2023-01-28 02:33:54,644 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1515 transitions. [2023-01-28 02:33:54,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1515 transitions. [2023-01-28 02:33:54,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:54,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1515 transitions. [2023-01-28 02:33:54,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 137.72727272727272) internal successors, (1515), 11 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:54,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:54,647 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:54,647 INFO L175 Difference]: Start difference. First operand has 459 places, 640 transitions, 20684 flow. Second operand 11 states and 1515 transitions. [2023-01-28 02:33:54,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 700 transitions, 22882 flow [2023-01-28 02:33:55,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 700 transitions, 21888 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-01-28 02:33:55,353 INFO L231 Difference]: Finished difference. Result has 460 places, 653 transitions, 21026 flow [2023-01-28 02:33:55,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19726, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21026, PETRI_PLACES=460, PETRI_TRANSITIONS=653} [2023-01-28 02:33:55,353 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-01-28 02:33:55,354 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 653 transitions, 21026 flow [2023-01-28 02:33:55,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:55,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:55,354 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:33:55,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:55,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-01-28 02:33:55,555 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:55,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:55,555 INFO L85 PathProgramCache]: Analyzing trace with hash 435157801, now seen corresponding path program 17 times [2023-01-28 02:33:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:55,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087262894] [2023-01-28 02:33:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:55,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:55,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:55,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087262894] [2023-01-28 02:33:55,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087262894] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:55,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440522207] [2023-01-28 02:33:55,937 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:33:55,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:55,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:55,938 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:55,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-28 02:33:56,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 02:33:56,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:56,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-28 02:33:56,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:56,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:33:56,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 02:33:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:56,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:56,604 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3807 (Array Int Int)) (~scoreB~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3807))) (let ((.cse0 (select .cse1 ~scoreB~0.base))) (or (< |c_thread1Thread1of1ForFork0_#t~mem3#1| (+ (select .cse0 (+ c_~scoreB~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) 1)) (< (select .cse0 c_~scoreB~0.offset) (select (select .cse1 c_~scoreA~0.base) c_~scoreA~0.offset)))))) is different from false [2023-01-28 02:33:56,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:56,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 143 [2023-01-28 02:33:56,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:56,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2023-01-28 02:33:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:33:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440522207] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:57,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:33:57,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 10] total 27 [2023-01-28 02:33:57,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56378110] [2023-01-28 02:33:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:57,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:33:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:33:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=608, Unknown=1, NotChecked=50, Total=756 [2023-01-28 02:33:57,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 410 [2023-01-28 02:33:57,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 653 transitions, 21026 flow. Second operand has 10 states, 10 states have (on average 138.2) internal successors, (1382), 10 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:57,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:57,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 410 [2023-01-28 02:33:57,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:00,970 INFO L130 PetriNetUnfolder]: 3179/5584 cut-off events. [2023-01-28 02:34:00,970 INFO L131 PetriNetUnfolder]: For 179775/179775 co-relation queries the response was YES. [2023-01-28 02:34:01,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56918 conditions, 5584 events. 3179/5584 cut-off events. For 179775/179775 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 33748 event pairs, 700 based on Foata normal form. 2/5586 useless extension candidates. Maximal degree in co-relation 56802. Up to 3304 conditions per place. [2023-01-28 02:34:01,042 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 301 selfloop transitions, 427 changer transitions 0/728 dead transitions. [2023-01-28 02:34:01,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 728 transitions, 24458 flow [2023-01-28 02:34:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:34:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:34:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1572 transitions. [2023-01-28 02:34:01,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485587583148559 [2023-01-28 02:34:01,044 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1572 transitions. [2023-01-28 02:34:01,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1572 transitions. [2023-01-28 02:34:01,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:01,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1572 transitions. [2023-01-28 02:34:01,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.9090909090909) internal successors, (1572), 11 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:01,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:01,047 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:01,047 INFO L175 Difference]: Start difference. First operand has 460 places, 653 transitions, 21026 flow. Second operand 11 states and 1572 transitions. [2023-01-28 02:34:01,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 728 transitions, 24458 flow [2023-01-28 02:34:01,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 728 transitions, 23818 flow, removed 84 selfloop flow, removed 11 redundant places. [2023-01-28 02:34:01,830 INFO L231 Difference]: Finished difference. Result has 461 places, 705 transitions, 23231 flow [2023-01-28 02:34:01,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20415, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23231, PETRI_PLACES=461, PETRI_TRANSITIONS=705} [2023-01-28 02:34:01,831 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 435 predicate places. [2023-01-28 02:34:01,831 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 705 transitions, 23231 flow [2023-01-28 02:34:01,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 138.2) internal successors, (1382), 10 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:01,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:01,831 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:34:01,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:02,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-01-28 02:34:02,038 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:02,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1693708765, now seen corresponding path program 18 times [2023-01-28 02:34:02,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396822730] [2023-01-28 02:34:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:02,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:02,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396822730] [2023-01-28 02:34:02,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396822730] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340618681] [2023-01-28 02:34:02,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:34:02,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:02,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:02,355 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:02,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-28 02:34:02,624 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 02:34:02,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:02,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-28 02:34:02,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:02,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:34:02,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 02:34:02,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:02,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-01-28 02:34:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:02,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:34:02,947 WARN L839 $PredicateComparison]: unable to prove that (forall ((~scoreB~0.base Int) (v_ArrVal_3878 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3878))) (let ((.cse0 (select .cse1 ~scoreB~0.base))) (or (< |c_thread1Thread1of1ForFork0_#t~mem3#1| (+ (select .cse0 (+ c_~scoreB~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) 1)) (< (select .cse0 c_~scoreB~0.offset) (select (select .cse1 c_~scoreA~0.base) c_~scoreA~0.offset)))))) is different from false [2023-01-28 02:34:02,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:02,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 143 [2023-01-28 02:34:03,008 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:03,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2023-01-28 02:34:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340618681] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:34:03,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:34:03,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 25 [2023-01-28 02:34:03,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421210280] [2023-01-28 02:34:03,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:34:03,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 02:34:03,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:03,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 02:34:03,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=510, Unknown=1, NotChecked=46, Total=650 [2023-01-28 02:34:03,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-28 02:34:03,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 705 transitions, 23231 flow. Second operand has 26 states, 26 states have (on average 135.0) internal successors, (3510), 26 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:03,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:03,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-28 02:34:03,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:07,552 INFO L130 PetriNetUnfolder]: 3169/5564 cut-off events. [2023-01-28 02:34:07,552 INFO L131 PetriNetUnfolder]: For 183566/183566 co-relation queries the response was YES. [2023-01-28 02:34:07,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57994 conditions, 5564 events. 3169/5564 cut-off events. For 183566/183566 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 33588 event pairs, 694 based on Foata normal form. 4/5568 useless extension candidates. Maximal degree in co-relation 57881. Up to 3304 conditions per place. [2023-01-28 02:34:07,615 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 294 selfloop transitions, 435 changer transitions 0/729 dead transitions. [2023-01-28 02:34:07,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 729 transitions, 24930 flow [2023-01-28 02:34:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:34:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:34:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1673 transitions. [2023-01-28 02:34:07,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34004065040650405 [2023-01-28 02:34:07,617 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1673 transitions. [2023-01-28 02:34:07,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1673 transitions. [2023-01-28 02:34:07,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:07,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1673 transitions. [2023-01-28 02:34:07,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 139.41666666666666) internal successors, (1673), 12 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:07,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:07,620 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:07,620 INFO L175 Difference]: Start difference. First operand has 461 places, 705 transitions, 23231 flow. Second operand 12 states and 1673 transitions. [2023-01-28 02:34:07,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 729 transitions, 24930 flow [2023-01-28 02:34:08,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 729 transitions, 24146 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-01-28 02:34:08,247 INFO L231 Difference]: Finished difference. Result has 458 places, 702 transitions, 23272 flow [2023-01-28 02:34:08,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=22402, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=23272, PETRI_PLACES=458, PETRI_TRANSITIONS=702} [2023-01-28 02:34:08,248 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 432 predicate places. [2023-01-28 02:34:08,248 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 702 transitions, 23272 flow [2023-01-28 02:34:08,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 135.0) internal successors, (3510), 26 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:08,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:08,249 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:34:08,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:08,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:08,449 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:08,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1697579182, now seen corresponding path program 1 times [2023-01-28 02:34:08,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:08,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768811851] [2023-01-28 02:34:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:08,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:08,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768811851] [2023-01-28 02:34:08,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768811851] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51739427] [2023-01-28 02:34:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:08,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:08,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:08,959 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:08,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-28 02:34:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:09,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:34:09,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:09,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:34:10,190 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-28 02:34:10,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-28 02:34:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51739427] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:34:14,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:34:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 31 [2023-01-28 02:34:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694070327] [2023-01-28 02:34:14,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:34:14,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 02:34:14,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 02:34:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:34:14,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 410 [2023-01-28 02:34:14,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 702 transitions, 23272 flow. Second operand has 31 states, 31 states have (on average 129.16129032258064) internal successors, (4004), 31 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:14,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:14,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 410 [2023-01-28 02:34:14,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:19,001 INFO L130 PetriNetUnfolder]: 5860/10410 cut-off events. [2023-01-28 02:34:19,001 INFO L131 PetriNetUnfolder]: For 289307/289307 co-relation queries the response was YES. [2023-01-28 02:34:19,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97523 conditions, 10410 events. 5860/10410 cut-off events. For 289307/289307 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 70397 event pairs, 322 based on Foata normal form. 304/10714 useless extension candidates. Maximal degree in co-relation 97415. Up to 2557 conditions per place. [2023-01-28 02:34:19,138 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 623 selfloop transitions, 585 changer transitions 6/1214 dead transitions. [2023-01-28 02:34:19,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1214 transitions, 35146 flow [2023-01-28 02:34:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-01-28 02:34:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-01-28 02:34:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5518 transitions. [2023-01-28 02:34:19,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32825698988697205 [2023-01-28 02:34:19,142 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5518 transitions. [2023-01-28 02:34:19,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5518 transitions. [2023-01-28 02:34:19,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:19,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5518 transitions. [2023-01-28 02:34:19,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 134.58536585365854) internal successors, (5518), 41 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:19,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 410.0) internal successors, (17220), 42 states have internal predecessors, (17220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:19,154 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 410.0) internal successors, (17220), 42 states have internal predecessors, (17220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:19,154 INFO L175 Difference]: Start difference. First operand has 458 places, 702 transitions, 23272 flow. Second operand 41 states and 5518 transitions. [2023-01-28 02:34:19,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1214 transitions, 35146 flow [2023-01-28 02:34:20,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1214 transitions, 33566 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-01-28 02:34:20,730 INFO L231 Difference]: Finished difference. Result has 506 places, 866 transitions, 27894 flow [2023-01-28 02:34:20,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=21842, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=27894, PETRI_PLACES=506, PETRI_TRANSITIONS=866} [2023-01-28 02:34:20,731 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 480 predicate places. [2023-01-28 02:34:20,731 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 866 transitions, 27894 flow [2023-01-28 02:34:20,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 129.16129032258064) internal successors, (4004), 31 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:20,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:20,732 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:34:20,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-01-28 02:34:20,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2023-01-28 02:34:20,932 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:20,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:20,933 INFO L85 PathProgramCache]: Analyzing trace with hash -646389568, now seen corresponding path program 2 times [2023-01-28 02:34:20,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:20,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993226110] [2023-01-28 02:34:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:20,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993226110] [2023-01-28 02:34:21,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993226110] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308347987] [2023-01-28 02:34:21,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:34:21,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:21,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:21,445 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:21,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-01-28 02:34:21,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:34:21,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:21,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 02:34:21,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:21,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:34:22,400 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-28 02:34:22,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-28 02:34:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:25,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308347987] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:34:25,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:34:25,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2023-01-28 02:34:25,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77088217] [2023-01-28 02:34:25,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:34:25,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 02:34:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:25,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 02:34:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:34:25,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 02:34:25,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 866 transitions, 27894 flow. Second operand has 22 states, 22 states have (on average 136.13636363636363) internal successors, (2995), 22 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:25,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:25,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 02:34:25,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:31,318 INFO L130 PetriNetUnfolder]: 7368/13503 cut-off events. [2023-01-28 02:34:31,318 INFO L131 PetriNetUnfolder]: For 410816/410816 co-relation queries the response was YES. [2023-01-28 02:34:31,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127799 conditions, 13503 events. 7368/13503 cut-off events. For 410816/410816 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 100584 event pairs, 1753 based on Foata normal form. 230/13733 useless extension candidates. Maximal degree in co-relation 127670. Up to 4835 conditions per place. [2023-01-28 02:34:31,499 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 685 selfloop transitions, 604 changer transitions 0/1289 dead transitions. [2023-01-28 02:34:31,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1289 transitions, 38885 flow [2023-01-28 02:34:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 02:34:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 02:34:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3868 transitions. [2023-01-28 02:34:31,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34941282746160796 [2023-01-28 02:34:31,503 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3868 transitions. [2023-01-28 02:34:31,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3868 transitions. [2023-01-28 02:34:31,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:31,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3868 transitions. [2023-01-28 02:34:31,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 143.25925925925927) internal successors, (3868), 27 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:31,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 410.0) internal successors, (11480), 28 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:31,511 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 410.0) internal successors, (11480), 28 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:31,511 INFO L175 Difference]: Start difference. First operand has 506 places, 866 transitions, 27894 flow. Second operand 27 states and 3868 transitions. [2023-01-28 02:34:31,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1289 transitions, 38885 flow [2023-01-28 02:34:33,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 1289 transitions, 37369 flow, removed 300 selfloop flow, removed 23 redundant places. [2023-01-28 02:34:33,765 INFO L231 Difference]: Finished difference. Result has 522 places, 1084 transitions, 34957 flow [2023-01-28 02:34:33,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=26462, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=34957, PETRI_PLACES=522, PETRI_TRANSITIONS=1084} [2023-01-28 02:34:33,766 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 496 predicate places. [2023-01-28 02:34:33,766 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 1084 transitions, 34957 flow [2023-01-28 02:34:33,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 136.13636363636363) internal successors, (2995), 22 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:33,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:33,767 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:34:33,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:33,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:33,968 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:33,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1623553708, now seen corresponding path program 3 times [2023-01-28 02:34:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816927921] [2023-01-28 02:34:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:34:34,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:34,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816927921] [2023-01-28 02:34:34,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816927921] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:34,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599659540] [2023-01-28 02:34:34,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:34:34,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:34,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:34,708 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:34,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-01-28 02:34:34,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:34:34,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:34,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:34:34,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:35,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:34:35,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599659540] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:34:35,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:34:35,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-28 02:34:35,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972624648] [2023-01-28 02:34:35,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:34:35,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:34:35,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:35,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:34:35,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-01-28 02:34:35,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:34:35,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 1084 transitions, 34957 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:35,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:35,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:34:35,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:41,213 INFO L130 PetriNetUnfolder]: 7340/13395 cut-off events. [2023-01-28 02:34:41,213 INFO L131 PetriNetUnfolder]: For 455900/455900 co-relation queries the response was YES. [2023-01-28 02:34:41,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132691 conditions, 13395 events. 7340/13395 cut-off events. For 455900/455900 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 99220 event pairs, 1364 based on Foata normal form. 2/13397 useless extension candidates. Maximal degree in co-relation 132551. Up to 6555 conditions per place. [2023-01-28 02:34:41,411 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 854 selfloop transitions, 263 changer transitions 2/1119 dead transitions. [2023-01-28 02:34:41,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1119 transitions, 37429 flow [2023-01-28 02:34:41,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:34:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:34:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1636 transitions. [2023-01-28 02:34:41,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33252032520325203 [2023-01-28 02:34:41,413 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1636 transitions. [2023-01-28 02:34:41,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1636 transitions. [2023-01-28 02:34:41,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:41,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1636 transitions. [2023-01-28 02:34:41,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.33333333333334) internal successors, (1636), 12 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:41,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:41,417 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:41,417 INFO L175 Difference]: Start difference. First operand has 522 places, 1084 transitions, 34957 flow. Second operand 12 states and 1636 transitions. [2023-01-28 02:34:41,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1119 transitions, 37429 flow [2023-01-28 02:34:44,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 1119 transitions, 36571 flow, removed 327 selfloop flow, removed 7 redundant places. [2023-01-28 02:34:44,259 INFO L231 Difference]: Finished difference. Result has 524 places, 1074 transitions, 34311 flow [2023-01-28 02:34:44,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=33813, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=34311, PETRI_PLACES=524, PETRI_TRANSITIONS=1074} [2023-01-28 02:34:44,260 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 498 predicate places. [2023-01-28 02:34:44,260 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 1074 transitions, 34311 flow [2023-01-28 02:34:44,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:44,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:44,260 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:34:44,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:44,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:44,461 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:44,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1737934884, now seen corresponding path program 4 times [2023-01-28 02:34:44,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616237663] [2023-01-28 02:34:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:44,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:44,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:44,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616237663] [2023-01-28 02:34:44,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616237663] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:44,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64502109] [2023-01-28 02:34:44,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:34:44,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:44,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:44,952 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:44,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-01-28 02:34:45,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:34:45,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:45,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 02:34:45,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:34:45,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:34:46,553 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:46,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 294 [2023-01-28 02:37:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:37:03,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64502109] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:37:03,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:37:03,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-01-28 02:37:03,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627019161] [2023-01-28 02:37:03,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:37:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 02:37:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:37:03,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 02:37:03,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2023-01-28 02:37:03,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 410 [2023-01-28 02:37:03,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1074 transitions, 34311 flow. Second operand has 27 states, 27 states have (on average 129.25925925925927) internal successors, (3490), 27 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:03,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:37:03,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 410 [2023-01-28 02:37:03,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:37:14,731 INFO L130 PetriNetUnfolder]: 8628/16066 cut-off events. [2023-01-28 02:37:14,731 INFO L131 PetriNetUnfolder]: For 503558/503558 co-relation queries the response was YES. [2023-01-28 02:37:14,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152963 conditions, 16066 events. 8628/16066 cut-off events. For 503558/503558 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 126381 event pairs, 1157 based on Foata normal form. 61/16127 useless extension candidates. Maximal degree in co-relation 152824. Up to 5442 conditions per place. [2023-01-28 02:37:14,990 INFO L137 encePairwiseOnDemand]: 394/410 looper letters, 694 selfloop transitions, 788 changer transitions 5/1487 dead transitions. [2023-01-28 02:37:14,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1487 transitions, 44364 flow [2023-01-28 02:37:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-01-28 02:37:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-01-28 02:37:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 7598 transitions. [2023-01-28 02:37:14,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3251176722293539 [2023-01-28 02:37:14,995 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 7598 transitions. [2023-01-28 02:37:14,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 7598 transitions. [2023-01-28 02:37:14,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:37:14,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 7598 transitions. [2023-01-28 02:37:15,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 133.2982456140351) internal successors, (7598), 57 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:15,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 410.0) internal successors, (23780), 58 states have internal predecessors, (23780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:15,010 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 410.0) internal successors, (23780), 58 states have internal predecessors, (23780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:15,010 INFO L175 Difference]: Start difference. First operand has 524 places, 1074 transitions, 34311 flow. Second operand 57 states and 7598 transitions. [2023-01-28 02:37:15,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1487 transitions, 44364 flow [2023-01-28 02:37:18,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1487 transitions, 43717 flow, removed 29 selfloop flow, removed 9 redundant places. [2023-01-28 02:37:18,839 INFO L231 Difference]: Finished difference. Result has 586 places, 1236 transitions, 40769 flow [2023-01-28 02:37:18,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=33803, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=40769, PETRI_PLACES=586, PETRI_TRANSITIONS=1236} [2023-01-28 02:37:18,840 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 560 predicate places. [2023-01-28 02:37:18,840 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1236 transitions, 40769 flow [2023-01-28 02:37:18,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 129.25925925925927) internal successors, (3490), 27 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:18,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:37:18,841 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:37:18,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-01-28 02:37:19,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:19,047 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:37:19,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:37:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash 108172946, now seen corresponding path program 5 times [2023-01-28 02:37:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:37:19,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715511666] [2023-01-28 02:37:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:37:19,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:37:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:37:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:37:19,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:37:19,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715511666] [2023-01-28 02:37:19,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715511666] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:37:19,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123500990] [2023-01-28 02:37:19,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:37:19,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:19,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:37:19,865 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:37:19,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-01-28 02:37:20,159 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 02:37:20,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:37:20,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:37:20,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:37:20,488 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:37:20,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-01-28 02:37:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:37:20,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:37:20,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123500990] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:37:20,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:37:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 28 [2023-01-28 02:37:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400456342] [2023-01-28 02:37:20,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:37:20,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:37:20,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:37:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:37:20,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2023-01-28 02:37:20,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:37:20,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1236 transitions, 40769 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:20,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:37:20,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:37:20,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:37:27,956 INFO L130 PetriNetUnfolder]: 8611/16026 cut-off events. [2023-01-28 02:37:27,956 INFO L131 PetriNetUnfolder]: For 562182/562182 co-relation queries the response was YES. [2023-01-28 02:37:28,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159836 conditions, 16026 events. 8611/16026 cut-off events. For 562182/562182 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 125662 event pairs, 1745 based on Foata normal form. 2/16028 useless extension candidates. Maximal degree in co-relation 159680. Up to 8088 conditions per place. [2023-01-28 02:37:28,242 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 997 selfloop transitions, 264 changer transitions 4/1265 dead transitions. [2023-01-28 02:37:28,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1265 transitions, 43501 flow [2023-01-28 02:37:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:37:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:37:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1492 transitions. [2023-01-28 02:37:28,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33082039911308203 [2023-01-28 02:37:28,244 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1492 transitions. [2023-01-28 02:37:28,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1492 transitions. [2023-01-28 02:37:28,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:37:28,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1492 transitions. [2023-01-28 02:37:28,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.63636363636363) internal successors, (1492), 11 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:28,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:28,247 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:28,247 INFO L175 Difference]: Start difference. First operand has 586 places, 1236 transitions, 40769 flow. Second operand 11 states and 1492 transitions. [2023-01-28 02:37:28,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1265 transitions, 43501 flow [2023-01-28 02:37:32,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1265 transitions, 42610 flow, removed 200 selfloop flow, removed 22 redundant places. [2023-01-28 02:37:32,961 INFO L231 Difference]: Finished difference. Result has 572 places, 1231 transitions, 40185 flow [2023-01-28 02:37:32,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=39719, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=969, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=40185, PETRI_PLACES=572, PETRI_TRANSITIONS=1231} [2023-01-28 02:37:32,962 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 546 predicate places. [2023-01-28 02:37:32,962 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 1231 transitions, 40185 flow [2023-01-28 02:37:32,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:32,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:37:32,962 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:37:32,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-01-28 02:37:33,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:33,163 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:37:33,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:37:33,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2048500918, now seen corresponding path program 6 times [2023-01-28 02:37:33,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:37:33,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379495550] [2023-01-28 02:37:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:37:33,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:37:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:37:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:37:33,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:37:33,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379495550] [2023-01-28 02:37:33,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379495550] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:37:33,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248975693] [2023-01-28 02:37:33,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:37:33,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:33,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:37:33,870 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:37:33,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-01-28 02:37:34,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 02:37:34,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:37:34,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:37:34,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:37:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:37:34,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:37:34,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248975693] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:37:34,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:37:34,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-28 02:37:34,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844943617] [2023-01-28 02:37:34,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:37:34,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:37:34,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:37:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:37:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2023-01-28 02:37:34,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:37:34,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 1231 transitions, 40185 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:34,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:37:34,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:37:34,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:37:42,074 INFO L130 PetriNetUnfolder]: 8581/15912 cut-off events. [2023-01-28 02:37:42,074 INFO L131 PetriNetUnfolder]: For 571878/571878 co-relation queries the response was YES. [2023-01-28 02:37:42,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158818 conditions, 15912 events. 8581/15912 cut-off events. For 571878/571878 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 124171 event pairs, 1743 based on Foata normal form. 2/15914 useless extension candidates. Maximal degree in co-relation 158663. Up to 8076 conditions per place. [2023-01-28 02:37:42,411 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 991 selfloop transitions, 268 changer transitions 2/1261 dead transitions. [2023-01-28 02:37:42,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1261 transitions, 42891 flow [2023-01-28 02:37:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:37:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:37:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1628 transitions. [2023-01-28 02:37:42,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3308943089430894 [2023-01-28 02:37:42,413 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1628 transitions. [2023-01-28 02:37:42,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1628 transitions. [2023-01-28 02:37:42,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:37:42,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1628 transitions. [2023-01-28 02:37:42,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.66666666666666) internal successors, (1628), 12 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:42,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:42,417 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:42,417 INFO L175 Difference]: Start difference. First operand has 572 places, 1231 transitions, 40185 flow. Second operand 12 states and 1628 transitions. [2023-01-28 02:37:42,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1261 transitions, 42891 flow [2023-01-28 02:37:46,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1261 transitions, 42302 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-01-28 02:37:46,867 INFO L231 Difference]: Finished difference. Result has 566 places, 1224 transitions, 39885 flow [2023-01-28 02:37:46,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=39381, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=39885, PETRI_PLACES=566, PETRI_TRANSITIONS=1224} [2023-01-28 02:37:46,868 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 540 predicate places. [2023-01-28 02:37:46,868 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 1224 transitions, 39885 flow [2023-01-28 02:37:46,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:46,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:37:46,868 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:37:46,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-01-28 02:37:47,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-01-28 02:37:47,069 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:37:47,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:37:47,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1314119378, now seen corresponding path program 7 times [2023-01-28 02:37:47,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:37:47,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15748785] [2023-01-28 02:37:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:37:47,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:37:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:37:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:37:48,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:37:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15748785] [2023-01-28 02:37:48,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15748785] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:37:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172172822] [2023-01-28 02:37:48,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:37:48,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:48,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:37:48,386 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:37:48,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-01-28 02:37:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:37:48,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:37:48,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:37:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:37:49,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:37:49,629 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-28 02:37:49,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-28 02:37:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:37:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172172822] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:37:56,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:37:56,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 9] total 40 [2023-01-28 02:37:56,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597668683] [2023-01-28 02:37:56,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:37:56,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-28 02:37:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:37:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-28 02:37:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2023-01-28 02:37:56,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 410 [2023-01-28 02:37:56,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1224 transitions, 39885 flow. Second operand has 40 states, 40 states have (on average 103.7) internal successors, (4148), 40 states have internal predecessors, (4148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:56,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:37:56,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 410 [2023-01-28 02:37:56,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:38:14,776 INFO L130 PetriNetUnfolder]: 17535/32591 cut-off events. [2023-01-28 02:38:14,776 INFO L131 PetriNetUnfolder]: For 1155863/1155863 co-relation queries the response was YES. [2023-01-28 02:38:15,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322804 conditions, 32591 events. 17535/32591 cut-off events. For 1155863/1155863 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 285719 event pairs, 2400 based on Foata normal form. 132/32723 useless extension candidates. Maximal degree in co-relation 322652. Up to 7529 conditions per place. [2023-01-28 02:38:15,650 INFO L137 encePairwiseOnDemand]: 392/410 looper letters, 1343 selfloop transitions, 1432 changer transitions 0/2775 dead transitions. [2023-01-28 02:38:15,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 2775 transitions, 89448 flow [2023-01-28 02:38:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-01-28 02:38:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-01-28 02:38:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 6867 transitions. [2023-01-28 02:38:15,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2658536585365854 [2023-01-28 02:38:15,657 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 6867 transitions. [2023-01-28 02:38:15,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 6867 transitions. [2023-01-28 02:38:15,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:38:15,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 6867 transitions. [2023-01-28 02:38:15,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 109.0) internal successors, (6867), 63 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:15,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 410.0) internal successors, (26240), 64 states have internal predecessors, (26240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:15,677 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 410.0) internal successors, (26240), 64 states have internal predecessors, (26240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:15,677 INFO L175 Difference]: Start difference. First operand has 566 places, 1224 transitions, 39885 flow. Second operand 63 states and 6867 transitions. [2023-01-28 02:38:15,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 2775 transitions, 89448 flow [2023-01-28 02:38:30,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 2775 transitions, 87744 flow, removed 8 selfloop flow, removed 14 redundant places. [2023-01-28 02:38:30,466 INFO L231 Difference]: Finished difference. Result has 618 places, 1964 transitions, 66905 flow [2023-01-28 02:38:30,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=38716, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=683, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=66905, PETRI_PLACES=618, PETRI_TRANSITIONS=1964} [2023-01-28 02:38:30,467 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 592 predicate places. [2023-01-28 02:38:30,467 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1964 transitions, 66905 flow [2023-01-28 02:38:30,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 103.7) internal successors, (4148), 40 states have internal predecessors, (4148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:30,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:38:30,468 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:38:30,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-01-28 02:38:30,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-01-28 02:38:30,668 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:38:30,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:38:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2121312068, now seen corresponding path program 8 times [2023-01-28 02:38:30,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:38:30,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459529445] [2023-01-28 02:38:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:38:30,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:38:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:38:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:38:31,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:38:31,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459529445] [2023-01-28 02:38:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459529445] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:38:31,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735078650] [2023-01-28 02:38:31,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:38:31,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:38:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:38:31,493 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:38:31,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-01-28 02:38:31,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:38:31,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:38:31,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 02:38:31,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:38:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:38:32,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:38:32,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735078650] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:38:32,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:38:32,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-28 02:38:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665260284] [2023-01-28 02:38:32,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:38:32,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:38:32,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:38:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:38:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-01-28 02:38:32,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:38:32,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1964 transitions, 66905 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:32,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:38:32,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:38:32,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:38:50,812 INFO L130 PetriNetUnfolder]: 17519/32559 cut-off events. [2023-01-28 02:38:50,812 INFO L131 PetriNetUnfolder]: For 1171995/1171995 co-relation queries the response was YES. [2023-01-28 02:38:51,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328746 conditions, 32559 events. 17519/32559 cut-off events. For 1171995/1171995 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 285267 event pairs, 3604 based on Foata normal form. 4/32563 useless extension candidates. Maximal degree in co-relation 328592. Up to 16643 conditions per place. [2023-01-28 02:38:51,859 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 1435 selfloop transitions, 558 changer transitions 3/1996 dead transitions. [2023-01-28 02:38:51,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1996 transitions, 71085 flow [2023-01-28 02:38:51,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:38:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:38:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1758 transitions. [2023-01-28 02:38:51,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298311444652908 [2023-01-28 02:38:51,861 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1758 transitions. [2023-01-28 02:38:51,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1758 transitions. [2023-01-28 02:38:51,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:38:51,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1758 transitions. [2023-01-28 02:38:51,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.23076923076923) internal successors, (1758), 13 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:51,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:51,864 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:51,864 INFO L175 Difference]: Start difference. First operand has 618 places, 1964 transitions, 66905 flow. Second operand 13 states and 1758 transitions. [2023-01-28 02:38:51,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 1996 transitions, 71085 flow [2023-01-28 02:39:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 1996 transitions, 70431 flow, removed 52 selfloop flow, removed 20 redundant places. [2023-01-28 02:39:05,911 INFO L231 Difference]: Finished difference. Result has 610 places, 1958 transitions, 67115 flow [2023-01-28 02:39:05,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=66057, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=558, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=67115, PETRI_PLACES=610, PETRI_TRANSITIONS=1958} [2023-01-28 02:39:05,913 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 584 predicate places. [2023-01-28 02:39:05,913 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 1958 transitions, 67115 flow [2023-01-28 02:39:05,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:05,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:39:05,913 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:39:05,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-01-28 02:39:06,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-01-28 02:39:06,114 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:39:06,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:39:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash -16981364, now seen corresponding path program 9 times [2023-01-28 02:39:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:39:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604688809] [2023-01-28 02:39:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:39:06,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:39:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:39:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:39:06,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:39:06,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604688809] [2023-01-28 02:39:06,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604688809] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:39:06,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:39:06,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:39:06,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922574678] [2023-01-28 02:39:06,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:39:06,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:39:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:39:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:39:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:39:06,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 02:39:06,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 1958 transitions, 67115 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:06,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:39:06,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 02:39:06,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:39:26,206 INFO L130 PetriNetUnfolder]: 17461/32337 cut-off events. [2023-01-28 02:39:26,206 INFO L131 PetriNetUnfolder]: For 1210221/1210221 co-relation queries the response was YES. [2023-01-28 02:39:26,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331100 conditions, 32337 events. 17461/32337 cut-off events. For 1210221/1210221 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 281993 event pairs, 7734 based on Foata normal form. 4/32341 useless extension candidates. Maximal degree in co-relation 330949. Up to 30373 conditions per place. [2023-01-28 02:39:26,846 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1602 selfloop transitions, 359 changer transitions 8/1969 dead transitions. [2023-01-28 02:39:26,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1969 transitions, 70934 flow [2023-01-28 02:39:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:39:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:39:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1681 transitions. [2023-01-28 02:39:26,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2023-01-28 02:39:26,848 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1681 transitions. [2023-01-28 02:39:26,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1681 transitions. [2023-01-28 02:39:26,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:39:26,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1681 transitions. [2023-01-28 02:39:26,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.08333333333334) internal successors, (1681), 12 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:26,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:26,852 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:26,852 INFO L175 Difference]: Start difference. First operand has 610 places, 1958 transitions, 67115 flow. Second operand 12 states and 1681 transitions. [2023-01-28 02:39:26,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1969 transitions, 70934 flow [2023-01-28 02:39:40,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 1969 transitions, 69603 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-01-28 02:39:40,433 INFO L231 Difference]: Finished difference. Result has 604 places, 1941 transitions, 65915 flow [2023-01-28 02:39:40,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65401, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=65915, PETRI_PLACES=604, PETRI_TRANSITIONS=1941} [2023-01-28 02:39:40,434 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 578 predicate places. [2023-01-28 02:39:40,435 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 1941 transitions, 65915 flow [2023-01-28 02:39:40,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:40,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:39:40,435 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:39:40,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-01-28 02:39:40,435 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:39:40,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:39:40,435 INFO L85 PathProgramCache]: Analyzing trace with hash -259348282, now seen corresponding path program 10 times [2023-01-28 02:39:40,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:39:40,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938940953] [2023-01-28 02:39:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:39:40,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:39:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:39:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:39:40,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:39:40,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938940953] [2023-01-28 02:39:40,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938940953] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:39:40,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:39:40,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:39:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124199358] [2023-01-28 02:39:40,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:39:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:39:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:39:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:39:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:39:40,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 02:39:40,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1941 transitions, 65915 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:40,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:39:40,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 02:39:40,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:40:00,176 INFO L130 PetriNetUnfolder]: 17457/32339 cut-off events. [2023-01-28 02:40:00,176 INFO L131 PetriNetUnfolder]: For 1155927/1155927 co-relation queries the response was YES. [2023-01-28 02:40:00,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325912 conditions, 32339 events. 17457/32339 cut-off events. For 1155927/1155927 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 282139 event pairs, 7730 based on Foata normal form. 4/32343 useless extension candidates. Maximal degree in co-relation 325761. Up to 30373 conditions per place. [2023-01-28 02:40:00,919 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1634 selfloop transitions, 318 changer transitions 12/1964 dead transitions. [2023-01-28 02:40:00,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 1964 transitions, 70175 flow [2023-01-28 02:40:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:40:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:40:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1401 transitions. [2023-01-28 02:40:00,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34170731707317076 [2023-01-28 02:40:00,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1401 transitions. [2023-01-28 02:40:00,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1401 transitions. [2023-01-28 02:40:00,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:40:00,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1401 transitions. [2023-01-28 02:40:00,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.1) internal successors, (1401), 10 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:00,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:00,925 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:00,925 INFO L175 Difference]: Start difference. First operand has 604 places, 1941 transitions, 65915 flow. Second operand 10 states and 1401 transitions. [2023-01-28 02:40:00,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 1964 transitions, 70175 flow [2023-01-28 02:40:14,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1964 transitions, 69449 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-01-28 02:40:14,285 INFO L231 Difference]: Finished difference. Result has 598 places, 1937 transitions, 65751 flow [2023-01-28 02:40:14,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65197, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=65751, PETRI_PLACES=598, PETRI_TRANSITIONS=1937} [2023-01-28 02:40:14,286 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 572 predicate places. [2023-01-28 02:40:14,287 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 1937 transitions, 65751 flow [2023-01-28 02:40:14,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:14,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:40:14,287 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:40:14,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-01-28 02:40:14,287 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:40:14,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:40:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash -239187364, now seen corresponding path program 11 times [2023-01-28 02:40:14,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:40:14,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107080913] [2023-01-28 02:40:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:40:14,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:40:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:40:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:40:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:40:15,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107080913] [2023-01-28 02:40:15,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107080913] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:40:15,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351167936] [2023-01-28 02:40:15,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:40:15,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:40:15,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:40:15,165 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:40:15,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-01-28 02:40:15,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 02:40:15,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:40:15,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:40:15,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:40:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:40:15,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:40:15,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351167936] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:40:15,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:40:15,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 28 [2023-01-28 02:40:15,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308296035] [2023-01-28 02:40:15,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:40:15,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:40:15,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:40:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:40:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-01-28 02:40:15,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:40:15,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1937 transitions, 65751 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:15,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:40:15,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:40:15,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:40:34,621 INFO L130 PetriNetUnfolder]: 17501/32397 cut-off events. [2023-01-28 02:40:34,621 INFO L131 PetriNetUnfolder]: For 1165850/1165850 co-relation queries the response was YES. [2023-01-28 02:40:35,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326721 conditions, 32397 events. 17501/32397 cut-off events. For 1165850/1165850 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 282329 event pairs, 3616 based on Foata normal form. 4/32401 useless extension candidates. Maximal degree in co-relation 326569. Up to 16687 conditions per place. [2023-01-28 02:40:35,659 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 1446 selfloop transitions, 532 changer transitions 2/1980 dead transitions. [2023-01-28 02:40:35,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 1980 transitions, 70363 flow [2023-01-28 02:40:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:40:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:40:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1497 transitions. [2023-01-28 02:40:35,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3319290465631929 [2023-01-28 02:40:35,661 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1497 transitions. [2023-01-28 02:40:35,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1497 transitions. [2023-01-28 02:40:35,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:40:35,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1497 transitions. [2023-01-28 02:40:35,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 136.0909090909091) internal successors, (1497), 11 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:35,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:35,664 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:35,664 INFO L175 Difference]: Start difference. First operand has 598 places, 1937 transitions, 65751 flow. Second operand 11 states and 1497 transitions. [2023-01-28 02:40:35,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 1980 transitions, 70363 flow [2023-01-28 02:40:49,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1980 transitions, 69719 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-28 02:40:50,006 INFO L231 Difference]: Finished difference. Result has 601 places, 1945 transitions, 66514 flow [2023-01-28 02:40:50,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=64993, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=66514, PETRI_PLACES=601, PETRI_TRANSITIONS=1945} [2023-01-28 02:40:50,008 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 575 predicate places. [2023-01-28 02:40:50,008 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 1945 transitions, 66514 flow [2023-01-28 02:40:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:50,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:40:50,009 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:40:50,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-01-28 02:40:50,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:40:50,209 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:40:50,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:40:50,210 INFO L85 PathProgramCache]: Analyzing trace with hash 980571048, now seen corresponding path program 12 times [2023-01-28 02:40:50,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:40:50,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586628738] [2023-01-28 02:40:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:40:50,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:40:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:40:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 02:40:51,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:40:51,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586628738] [2023-01-28 02:40:51,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586628738] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:40:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264222722] [2023-01-28 02:40:51,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:40:51,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:40:51,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:40:51,079 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:40:51,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-01-28 02:40:51,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 02:40:51,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:40:51,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 02:40:51,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:40:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:40:51,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:40:52,205 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-28 02:40:52,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-28 02:40:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:40:53,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264222722] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:40:53,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:40:53,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 9] total 31 [2023-01-28 02:40:53,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049101503] [2023-01-28 02:40:53,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:40:53,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 02:40:53,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:40:53,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 02:40:53,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:40:53,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 410 [2023-01-28 02:40:53,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 1945 transitions, 66514 flow. Second operand has 31 states, 31 states have (on average 113.90322580645162) internal successors, (3531), 31 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:40:53,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:40:53,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 410 [2023-01-28 02:40:53,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:41:14,134 INFO L130 PetriNetUnfolder]: 17961/33445 cut-off events. [2023-01-28 02:41:14,134 INFO L131 PetriNetUnfolder]: For 1266601/1266601 co-relation queries the response was YES. [2023-01-28 02:41:14,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342055 conditions, 33445 events. 17961/33445 cut-off events. For 1266601/1266601 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 294933 event pairs, 5708 based on Foata normal form. 264/33709 useless extension candidates. Maximal degree in co-relation 341901. Up to 23093 conditions per place. [2023-01-28 02:41:15,078 INFO L137 encePairwiseOnDemand]: 394/410 looper letters, 988 selfloop transitions, 1099 changer transitions 0/2087 dead transitions. [2023-01-28 02:41:15,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 2087 transitions, 74090 flow [2023-01-28 02:41:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 02:41:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 02:41:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2018 transitions. [2023-01-28 02:41:15,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2895265423242468 [2023-01-28 02:41:15,080 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2018 transitions. [2023-01-28 02:41:15,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2018 transitions. [2023-01-28 02:41:15,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:41:15,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2018 transitions. [2023-01-28 02:41:15,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 118.70588235294117) internal successors, (2018), 17 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:15,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:15,085 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:15,085 INFO L175 Difference]: Start difference. First operand has 601 places, 1945 transitions, 66514 flow. Second operand 17 states and 2018 transitions. [2023-01-28 02:41:15,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 2087 transitions, 74090 flow [2023-01-28 02:41:29,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 2087 transitions, 73259 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-01-28 02:41:30,010 INFO L231 Difference]: Finished difference. Result has 614 places, 1999 transitions, 70780 flow [2023-01-28 02:41:30,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65473, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=70780, PETRI_PLACES=614, PETRI_TRANSITIONS=1999} [2023-01-28 02:41:30,011 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 588 predicate places. [2023-01-28 02:41:30,011 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 1999 transitions, 70780 flow [2023-01-28 02:41:30,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 113.90322580645162) internal successors, (3531), 31 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:30,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:41:30,012 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:41:30,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-01-28 02:41:30,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:41:30,219 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:41:30,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:41:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2134886524, now seen corresponding path program 13 times [2023-01-28 02:41:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:41:30,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550874740] [2023-01-28 02:41:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:41:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:41:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:41:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:41:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:41:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550874740] [2023-01-28 02:41:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550874740] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:41:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57267194] [2023-01-28 02:41:31,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:41:31,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:41:31,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:41:31,339 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:41:31,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-01-28 02:41:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:41:31,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-28 02:41:31,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:41:31,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:41:31,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 51 [2023-01-28 02:41:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:41:32,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:41:32,448 INFO L321 Elim1Store]: treesize reduction 11, result has 91.3 percent of original size [2023-01-28 02:41:32,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 147 [2023-01-28 02:41:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:41:33,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57267194] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:41:33,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:41:33,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 10] total 43 [2023-01-28 02:41:33,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785181736] [2023-01-28 02:41:33,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:41:33,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-01-28 02:41:33,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:41:33,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-01-28 02:41:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2023-01-28 02:41:33,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 410 [2023-01-28 02:41:33,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 1999 transitions, 70780 flow. Second operand has 43 states, 43 states have (on average 105.83720930232558) internal successors, (4551), 43 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:33,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:41:33,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 410 [2023-01-28 02:41:33,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:41:52,937 INFO L130 PetriNetUnfolder]: 14445/27839 cut-off events. [2023-01-28 02:41:52,937 INFO L131 PetriNetUnfolder]: For 1078274/1078274 co-relation queries the response was YES. [2023-01-28 02:41:53,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284900 conditions, 27839 events. 14445/27839 cut-off events. For 1078274/1078274 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 247579 event pairs, 1122 based on Foata normal form. 186/28025 useless extension candidates. Maximal degree in co-relation 284742. Up to 6539 conditions per place. [2023-01-28 02:41:53,425 INFO L137 encePairwiseOnDemand]: 393/410 looper letters, 545 selfloop transitions, 1262 changer transitions 45/1852 dead transitions. [2023-01-28 02:41:53,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 1852 transitions, 67133 flow [2023-01-28 02:41:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 02:41:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 02:41:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3916 transitions. [2023-01-28 02:41:53,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26531165311653115 [2023-01-28 02:41:53,428 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3916 transitions. [2023-01-28 02:41:53,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3916 transitions. [2023-01-28 02:41:53,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:41:53,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3916 transitions. [2023-01-28 02:41:53,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 108.77777777777777) internal successors, (3916), 36 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:53,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 410.0) internal successors, (15170), 37 states have internal predecessors, (15170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:53,438 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 410.0) internal successors, (15170), 37 states have internal predecessors, (15170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:53,438 INFO L175 Difference]: Start difference. First operand has 614 places, 1999 transitions, 70780 flow. Second operand 36 states and 3916 transitions. [2023-01-28 02:41:53,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 1852 transitions, 67133 flow [2023-01-28 02:42:05,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 1852 transitions, 66089 flow, removed 159 selfloop flow, removed 13 redundant places. [2023-01-28 02:42:05,068 INFO L231 Difference]: Finished difference. Result has 633 places, 1728 transitions, 62989 flow [2023-01-28 02:42:05,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=60611, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=62989, PETRI_PLACES=633, PETRI_TRANSITIONS=1728} [2023-01-28 02:42:05,069 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 607 predicate places. [2023-01-28 02:42:05,069 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 1728 transitions, 62989 flow [2023-01-28 02:42:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 105.83720930232558) internal successors, (4551), 43 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:05,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:42:05,070 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:42:05,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-01-28 02:42:05,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2023-01-28 02:42:05,270 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:42:05,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:42:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1636900852, now seen corresponding path program 14 times [2023-01-28 02:42:05,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:42:05,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947087772] [2023-01-28 02:42:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:42:05,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:42:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:42:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:42:05,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:42:05,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947087772] [2023-01-28 02:42:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947087772] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:42:05,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581912035] [2023-01-28 02:42:05,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:42:05,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:42:05,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:42:05,994 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:42:05,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-01-28 02:42:06,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:42:06,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:42:06,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:42:06,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:42:06,622 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:42:06,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-01-28 02:42:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:42:06,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:42:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581912035] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:42:06,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:42:06,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-28 02:42:06,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752591234] [2023-01-28 02:42:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:42:06,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:42:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:42:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:42:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2023-01-28 02:42:06,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:42:06,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 1728 transitions, 62989 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:06,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:42:06,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:42:06,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:42:21,888 INFO L130 PetriNetUnfolder]: 14279/27263 cut-off events. [2023-01-28 02:42:21,888 INFO L131 PetriNetUnfolder]: For 1079259/1079259 co-relation queries the response was YES. [2023-01-28 02:42:22,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280700 conditions, 27263 events. 14279/27263 cut-off events. For 1079259/1079259 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 238600 event pairs, 2858 based on Foata normal form. 4/27267 useless extension candidates. Maximal degree in co-relation 280545. Up to 13323 conditions per place. [2023-01-28 02:42:22,334 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1237 selfloop transitions, 501 changer transitions 10/1748 dead transitions. [2023-01-28 02:42:22,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 1748 transitions, 66348 flow [2023-01-28 02:42:22,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:42:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:42:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1484 transitions. [2023-01-28 02:42:22,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32904656319290465 [2023-01-28 02:42:22,335 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1484 transitions. [2023-01-28 02:42:22,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1484 transitions. [2023-01-28 02:42:22,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:42:22,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1484 transitions. [2023-01-28 02:42:22,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.9090909090909) internal successors, (1484), 11 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:22,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:22,338 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:22,338 INFO L175 Difference]: Start difference. First operand has 633 places, 1728 transitions, 62989 flow. Second operand 11 states and 1484 transitions. [2023-01-28 02:42:22,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 1748 transitions, 66348 flow [2023-01-28 02:42:34,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 1748 transitions, 63790 flow, removed 47 selfloop flow, removed 30 redundant places. [2023-01-28 02:42:34,617 INFO L231 Difference]: Finished difference. Result has 606 places, 1713 transitions, 60858 flow [2023-01-28 02:42:34,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=60075, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=60858, PETRI_PLACES=606, PETRI_TRANSITIONS=1713} [2023-01-28 02:42:34,619 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 580 predicate places. [2023-01-28 02:42:34,619 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 1713 transitions, 60858 flow [2023-01-28 02:42:34,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:34,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:42:34,620 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:42:34,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-01-28 02:42:34,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:42:34,827 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:42:34,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:42:34,827 INFO L85 PathProgramCache]: Analyzing trace with hash 14877656, now seen corresponding path program 15 times [2023-01-28 02:42:34,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:42:34,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926599035] [2023-01-28 02:42:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:42:34,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:42:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:42:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:42:35,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:42:35,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926599035] [2023-01-28 02:42:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926599035] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:42:35,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:42:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:42:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392018768] [2023-01-28 02:42:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:42:35,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:42:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:42:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:42:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:42:35,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 02:42:35,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 1713 transitions, 60858 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:35,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:42:35,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 02:42:35,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:42:49,867 INFO L130 PetriNetUnfolder]: 14269/27239 cut-off events. [2023-01-28 02:42:49,867 INFO L131 PetriNetUnfolder]: For 1046095/1046095 co-relation queries the response was YES. [2023-01-28 02:42:50,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274851 conditions, 27239 events. 14269/27239 cut-off events. For 1046095/1046095 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 238544 event pairs, 6528 based on Foata normal form. 4/27243 useless extension candidates. Maximal degree in co-relation 274709. Up to 25297 conditions per place. [2023-01-28 02:42:50,307 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 1477 selfloop transitions, 233 changer transitions 13/1723 dead transitions. [2023-01-28 02:42:50,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 1723 transitions, 64276 flow [2023-01-28 02:42:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:42:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:42:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1398 transitions. [2023-01-28 02:42:50,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409756097560976 [2023-01-28 02:42:50,309 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1398 transitions. [2023-01-28 02:42:50,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1398 transitions. [2023-01-28 02:42:50,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:42:50,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1398 transitions. [2023-01-28 02:42:50,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 139.8) internal successors, (1398), 10 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:50,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:50,312 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:50,312 INFO L175 Difference]: Start difference. First operand has 606 places, 1713 transitions, 60858 flow. Second operand 10 states and 1398 transitions. [2023-01-28 02:42:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 1723 transitions, 64276 flow [2023-01-28 02:43:01,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 1723 transitions, 62761 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-01-28 02:43:01,709 INFO L231 Difference]: Finished difference. Result has 598 places, 1702 transitions, 59473 flow [2023-01-28 02:43:01,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=59229, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=59473, PETRI_PLACES=598, PETRI_TRANSITIONS=1702} [2023-01-28 02:43:01,711 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 572 predicate places. [2023-01-28 02:43:01,711 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 1702 transitions, 59473 flow [2023-01-28 02:43:01,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:01,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:43:01,712 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:43:01,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-01-28 02:43:01,712 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:43:01,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:43:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash 136566742, now seen corresponding path program 16 times [2023-01-28 02:43:01,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:43:01,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639317801] [2023-01-28 02:43:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:43:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:43:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:43:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 02:43:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:43:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639317801] [2023-01-28 02:43:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639317801] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:43:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373252916] [2023-01-28 02:43:02,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:43:02,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:43:02,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:43:02,769 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:43:02,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-01-28 02:43:03,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:43:03,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:43:03,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 02:43:03,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:43:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:43:03,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:43:03,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373252916] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:43:03,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:43:03,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 28 [2023-01-28 02:43:03,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689532642] [2023-01-28 02:43:03,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:43:03,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:43:03,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:43:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:43:03,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2023-01-28 02:43:03,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 02:43:03,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1702 transitions, 59473 flow. Second operand has 9 states, 9 states have (on average 139.66666666666666) internal successors, (1257), 9 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:03,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:43:03,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 02:43:03,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:43:18,789 INFO L130 PetriNetUnfolder]: 14245/27181 cut-off events. [2023-01-28 02:43:18,789 INFO L131 PetriNetUnfolder]: For 1000383/1000383 co-relation queries the response was YES. [2023-01-28 02:43:19,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269818 conditions, 27181 events. 14245/27181 cut-off events. For 1000383/1000383 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 237849 event pairs, 6506 based on Foata normal form. 4/27185 useless extension candidates. Maximal degree in co-relation 269677. Up to 25206 conditions per place. [2023-01-28 02:43:19,218 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 1472 selfloop transitions, 243 changer transitions 3/1718 dead transitions. [2023-01-28 02:43:19,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1718 transitions, 62869 flow [2023-01-28 02:43:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:43:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:43:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1580 transitions. [2023-01-28 02:43:19,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35033259423503327 [2023-01-28 02:43:19,220 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1580 transitions. [2023-01-28 02:43:19,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1580 transitions. [2023-01-28 02:43:19,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:43:19,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1580 transitions. [2023-01-28 02:43:19,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.63636363636363) internal successors, (1580), 11 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:19,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:19,223 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:19,223 INFO L175 Difference]: Start difference. First operand has 598 places, 1702 transitions, 59473 flow. Second operand 11 states and 1580 transitions. [2023-01-28 02:43:19,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1718 transitions, 62869 flow [2023-01-28 02:43:30,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 1718 transitions, 62277 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 02:43:30,236 INFO L231 Difference]: Finished difference. Result has 594 places, 1697 transitions, 59131 flow [2023-01-28 02:43:30,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=58628, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=59131, PETRI_PLACES=594, PETRI_TRANSITIONS=1697} [2023-01-28 02:43:30,238 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 568 predicate places. [2023-01-28 02:43:30,238 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 1697 transitions, 59131 flow [2023-01-28 02:43:30,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 139.66666666666666) internal successors, (1257), 9 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:30,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:43:30,238 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:43:30,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-01-28 02:43:30,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2023-01-28 02:43:30,439 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:43:30,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:43:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1839896538, now seen corresponding path program 17 times [2023-01-28 02:43:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:43:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569452345] [2023-01-28 02:43:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:43:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:43:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:43:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:43:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:43:30,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569452345] [2023-01-28 02:43:30,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569452345] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:43:30,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587346185] [2023-01-28 02:43:30,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:43:30,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:43:30,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:43:30,853 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:43:30,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-01-28 02:43:31,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 02:43:31,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:43:31,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:43:31,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:43:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:43:31,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:43:32,102 INFO L321 Elim1Store]: treesize reduction 66, result has 79.8 percent of original size [2023-01-28 02:43:32,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 182 treesize of output 306 [2023-01-28 02:43:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:43:34,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587346185] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:43:34,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:43:34,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 29 [2023-01-28 02:43:34,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800232320] [2023-01-28 02:43:34,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:43:34,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 02:43:34,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:43:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 02:43:34,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2023-01-28 02:43:34,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 02:43:34,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 1697 transitions, 59131 flow. Second operand has 29 states, 29 states have (on average 130.0) internal successors, (3770), 29 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:34,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:43:34,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 02:43:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:43:49,816 INFO L130 PetriNetUnfolder]: 14103/26947 cut-off events. [2023-01-28 02:43:49,817 INFO L131 PetriNetUnfolder]: For 999683/999683 co-relation queries the response was YES. [2023-01-28 02:43:50,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266926 conditions, 26947 events. 14103/26947 cut-off events. For 999683/999683 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 235891 event pairs, 2006 based on Foata normal form. 132/27079 useless extension candidates. Maximal degree in co-relation 266784. Up to 10318 conditions per place. [2023-01-28 02:43:50,433 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 653 selfloop transitions, 1106 changer transitions 0/1759 dead transitions. [2023-01-28 02:43:50,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 1759 transitions, 63075 flow [2023-01-28 02:43:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 02:43:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 02:43:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2430 transitions. [2023-01-28 02:43:50,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32926829268292684 [2023-01-28 02:43:50,435 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2430 transitions. [2023-01-28 02:43:50,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2430 transitions. [2023-01-28 02:43:50,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:43:50,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2430 transitions. [2023-01-28 02:43:50,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 135.0) internal successors, (2430), 18 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:50,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:50,441 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:50,441 INFO L175 Difference]: Start difference. First operand has 594 places, 1697 transitions, 59131 flow. Second operand 18 states and 2430 transitions. [2023-01-28 02:43:50,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 1759 transitions, 63075 flow Received shutdown request... [2023-01-28 02:43:53,946 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:43:53,946 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:43:54,005 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 02:43:54,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-01-28 02:43:54,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:43:54,207 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 02:43:54,208 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 02:43:54,208 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 02:43:54,209 INFO L445 BasicCegarLoop]: Path program histogram: [28, 22, 18, 17, 7, 4, 1, 1] [2023-01-28 02:43:54,211 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:43:54,211 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:43:54,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:43:54 BasicIcfg [2023-01-28 02:43:54,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:43:54,213 INFO L158 Benchmark]: Toolchain (without parser) took 759747.39ms. Allocated memory was 356.5MB in the beginning and 13.1GB in the end (delta: 12.7GB). Free memory was 304.4MB in the beginning and 11.1GB in the end (delta: -10.8GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2023-01-28 02:43:54,213 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:43:54,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.12ms. Allocated memory is still 356.5MB. Free memory was 304.1MB in the beginning and 292.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 02:43:54,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.44ms. Allocated memory is still 356.5MB. Free memory was 292.7MB in the beginning and 290.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:43:54,214 INFO L158 Benchmark]: Boogie Preprocessor took 56.00ms. Allocated memory is still 356.5MB. Free memory was 334.8MB in the beginning and 333.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:43:54,214 INFO L158 Benchmark]: RCFGBuilder took 498.59ms. Allocated memory is still 356.5MB. Free memory was 332.7MB in the beginning and 314.7MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 02:43:54,214 INFO L158 Benchmark]: TraceAbstraction took 758804.82ms. Allocated memory was 356.5MB in the beginning and 13.1GB in the end (delta: 12.7GB). Free memory was 313.8MB in the beginning and 11.1GB in the end (delta: -10.8GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2023-01-28 02:43:54,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 303.12ms. Allocated memory is still 356.5MB. Free memory was 304.1MB in the beginning and 292.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.44ms. Allocated memory is still 356.5MB. Free memory was 292.7MB in the beginning and 290.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 56.00ms. Allocated memory is still 356.5MB. Free memory was 334.8MB in the beginning and 333.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 498.59ms. Allocated memory is still 356.5MB. Free memory was 332.7MB in the beginning and 314.7MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 758804.82ms. Allocated memory was 356.5MB in the beginning and 13.1GB in the end (delta: 12.7GB). Free memory was 313.8MB in the beginning and 11.1GB in the end (delta: -10.8GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 177 PlacesBefore, 26 PlacesAfterwards, 189 TransitionsBefore, 25 TransitionsAfterwards, 3332 CoEnabledTransitionPairs, 7 FixpointIterations, 92 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 19 ConcurrentYvCompositions, 13 ChoiceCompositions, 211 TotalNumberOfCompositions, 3976 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3441, independent: 3370, independent conditional: 0, independent unconditional: 3370, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1966, independent: 1951, independent conditional: 0, independent unconditional: 1951, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3441, independent: 1419, independent conditional: 0, independent unconditional: 1419, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 1966, unknown conditional: 0, unknown unconditional: 1966] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 243 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 758.7s, OverallIterations: 98, TraceHistogramMax: 5, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 501.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 19580 SdHoareTripleChecker+Valid, 23.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19580 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 20.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 149 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 758 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43122 IncrementalHoareTripleChecker+Invalid, 44033 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 758 mSolverCounterUnsat, 8 mSDtfsCounter, 43122 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4588 GetRequests, 1842 SyntacticMatches, 7 SemanticMatches, 2739 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 21622 ImplicationChecksByTransitivity, 54.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70780occurred in iteration=93, InterpolantAutomatonStates: 1460, 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: 0.9s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 228.5s InterpolantComputationTime, 4153 NumberOfCodeBlocks, 3937 NumberOfCodeBlocksAsserted, 184 NumberOfCheckSat, 4668 ConstructedInterpolants, 35 QuantifiedInterpolants, 51982 SizeOfPredicates, 666 NumberOfNonLiveVariables, 10991 ConjunctsInSsa, 1235 ConjunctsInUnsatCore, 167 InterpolantComputations, 79 PerfectInterpolantSequences, 4432/4976 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown