/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-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:38:28,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:38:28,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:38:28,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:38:28,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:38:28,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:38:28,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:38:28,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:38:28,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:38:28,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:38:28,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:38:28,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:38:28,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:38:28,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:38:28,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:38:28,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:38:28,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:38:28,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:38:28,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:38:28,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:38:28,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:38:28,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:38:28,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:38:28,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:38:28,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:38:28,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:38:28,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:38:28,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:38:28,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:38:28,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:38:28,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:38:28,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:38:28,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:38:28,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:38:28,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:38:28,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:38:28,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:38:28,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:38:28,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:38:28,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:38:28,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:38:28,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 07:38:28,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:38:28,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:38:28,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:38:28,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:38:28,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:38:28,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:38:28,500 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:38:28,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:38:28,501 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:38:28,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:38:28,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:38:28,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:38:28,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:38:28,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:38:28,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:38:28,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:38:28,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:38:28,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:38:28,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:38:28,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:38:28,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:38:28,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:38:28,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:38:28,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:38:28,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:38:28,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:38:28,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:38:28,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:38:28,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:38:28,505 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:38:28,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:38:28,505 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:38:28,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:38:28,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:38:28,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:38:28,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:38:28,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:38:28,758 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:38:28,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2022-01-19 07:38:28,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfeaa854c/0c8a498d670e46099ab22171c59fb150/FLAG03affb9a9 [2022-01-19 07:38:29,186 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:38:29,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2022-01-19 07:38:29,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfeaa854c/0c8a498d670e46099ab22171c59fb150/FLAG03affb9a9 [2022-01-19 07:38:29,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfeaa854c/0c8a498d670e46099ab22171c59fb150 [2022-01-19 07:38:29,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:38:29,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:38:29,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:38:29,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:38:29,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:38:29,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3173b054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29, skipping insertion in model container [2022-01-19 07:38:29,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:38:29,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:38:29,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-01-19 07:38:29,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:38:29,800 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:38:29,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-01-19 07:38:29,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:38:29,848 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:38:29,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29 WrapperNode [2022-01-19 07:38:29,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:38:29,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:38:29,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:38:29,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:38:29,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,878 INFO L137 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2022-01-19 07:38:29,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:38:29,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:38:29,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:38:29,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:38:29,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:38:29,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:38:29,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:38:29,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:38:29,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (1/1) ... [2022-01-19 07:38:29,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:38:29,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:38:29,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 07:38:29,972 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 [2022-01-19 07:38:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:38:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:38:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:38:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:38:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:38:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 07:38:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 07:38:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:38:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:38:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:38:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 07:38:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 07:38:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:38:29,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:38:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:38:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:38:29,995 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 07:38:30,087 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:38:30,088 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:38:30,249 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:38:30,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:38:30,318 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-19 07:38:30,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:38:30 BoogieIcfgContainer [2022-01-19 07:38:30,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:38:30,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:38:30,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:38:30,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:38:30,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:38:29" (1/3) ... [2022-01-19 07:38:30,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675c6fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:38:30, skipping insertion in model container [2022-01-19 07:38:30,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:38:29" (2/3) ... [2022-01-19 07:38:30,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675c6fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:38:30, skipping insertion in model container [2022-01-19 07:38:30,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:38:30" (3/3) ... [2022-01-19 07:38:30,334 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-01-19 07:38:30,338 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:38:30,338 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:38:30,338 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:38:30,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,385 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,385 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,385 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,385 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,392 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,392 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:38:30,396 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 07:38:30,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:38:30,445 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 07:38:30,445 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 07:38:30,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 242 flow [2022-01-19 07:38:30,496 INFO L129 PetriNetUnfolder]: 7/106 cut-off events. [2022-01-19 07:38:30,497 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:38:30,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 7/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-01-19 07:38:30,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 242 flow [2022-01-19 07:38:30,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 95 transitions, 208 flow [2022-01-19 07:38:30,529 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-01-19 07:38:30,529 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:38:30,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:30,530 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:30,530 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash 851355942, now seen corresponding path program 1 times [2022-01-19 07:38:30,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:30,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402409926] [2022-01-19 07:38:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:30,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:30,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:30,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402409926] [2022-01-19 07:38:30,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402409926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:38:30,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:38:30,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 07:38:30,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019066819] [2022-01-19 07:38:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:38:30,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 07:38:30,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 07:38:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 07:38:30,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 109 [2022-01-19 07:38:30,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 208 flow. Second operand has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:30,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:30,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 109 [2022-01-19 07:38:30,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:30,939 INFO L129 PetriNetUnfolder]: 36/184 cut-off events. [2022-01-19 07:38:30,940 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-01-19 07:38:30,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 184 events. 36/184 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 454 event pairs, 7 based on Foata normal form. 18/184 useless extension candidates. Maximal degree in co-relation 178. Up to 49 conditions per place. [2022-01-19 07:38:30,945 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 10 selfloop transitions, 0 changer transitions 1/92 dead transitions. [2022-01-19 07:38:30,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 92 transitions, 222 flow [2022-01-19 07:38:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 07:38:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 07:38:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 203 transitions. [2022-01-19 07:38:30,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9311926605504587 [2022-01-19 07:38:30,959 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 203 transitions. [2022-01-19 07:38:30,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 203 transitions. [2022-01-19 07:38:30,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:30,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 203 transitions. [2022-01-19 07:38:30,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:30,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:30,975 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:30,977 INFO L186 Difference]: Start difference. First operand has 98 places, 95 transitions, 208 flow. Second operand 2 states and 203 transitions. [2022-01-19 07:38:30,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 92 transitions, 222 flow [2022-01-19 07:38:30,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 210 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 07:38:30,987 INFO L242 Difference]: Finished difference. Result has 93 places, 91 transitions, 188 flow [2022-01-19 07:38:30,988 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2022-01-19 07:38:30,995 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, -5 predicate places. [2022-01-19 07:38:30,995 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 188 flow [2022-01-19 07:38:30,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:30,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:30,995 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:30,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:38:30,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash -283457211, now seen corresponding path program 1 times [2022-01-19 07:38:30,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:30,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87289423] [2022-01-19 07:38:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:30,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:31,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:31,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87289423] [2022-01-19 07:38:31,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87289423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:38:31,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:38:31,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:38:31,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916694531] [2022-01-19 07:38:31,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:38:31,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:38:31,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:38:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:38:31,229 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 109 [2022-01-19 07:38:31,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:31,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 109 [2022-01-19 07:38:31,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:31,399 INFO L129 PetriNetUnfolder]: 95/279 cut-off events. [2022-01-19 07:38:31,400 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-01-19 07:38:31,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 279 events. 95/279 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 965 event pairs, 2 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 445. Up to 71 conditions per place. [2022-01-19 07:38:31,404 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 33 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-01-19 07:38:31,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 300 flow [2022-01-19 07:38:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:38:31,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:38:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 526 transitions. [2022-01-19 07:38:31,410 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8042813455657493 [2022-01-19 07:38:31,410 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 526 transitions. [2022-01-19 07:38:31,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 526 transitions. [2022-01-19 07:38:31,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:31,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 526 transitions. [2022-01-19 07:38:31,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,417 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,417 INFO L186 Difference]: Start difference. First operand has 93 places, 91 transitions, 188 flow. Second operand 6 states and 526 transitions. [2022-01-19 07:38:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 300 flow [2022-01-19 07:38:31,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 107 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:38:31,421 INFO L242 Difference]: Finished difference. Result has 99 places, 93 transitions, 213 flow [2022-01-19 07:38:31,422 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-01-19 07:38:31,422 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 1 predicate places. [2022-01-19 07:38:31,422 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 213 flow [2022-01-19 07:38:31,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,423 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:31,423 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:31,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:38:31,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash -337069583, now seen corresponding path program 2 times [2022-01-19 07:38:31,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:31,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032983348] [2022-01-19 07:38:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:31,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:31,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:31,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032983348] [2022-01-19 07:38:31,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032983348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:38:31,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:38:31,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:38:31,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932305208] [2022-01-19 07:38:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:38:31,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:38:31,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:38:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:38:31,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 109 [2022-01-19 07:38:31,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:31,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 109 [2022-01-19 07:38:31,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:31,826 INFO L129 PetriNetUnfolder]: 99/326 cut-off events. [2022-01-19 07:38:31,826 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-01-19 07:38:31,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 326 events. 99/326 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1311 event pairs, 20 based on Foata normal form. 3/297 useless extension candidates. Maximal degree in co-relation 546. Up to 71 conditions per place. [2022-01-19 07:38:31,830 INFO L132 encePairwiseOnDemand]: 101/109 looper letters, 36 selfloop transitions, 8 changer transitions 0/112 dead transitions. [2022-01-19 07:38:31,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 112 transitions, 341 flow [2022-01-19 07:38:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:38:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:38:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2022-01-19 07:38:31,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8020969855832241 [2022-01-19 07:38:31,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2022-01-19 07:38:31,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2022-01-19 07:38:31,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:31,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2022-01-19 07:38:31,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,837 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,837 INFO L186 Difference]: Start difference. First operand has 99 places, 93 transitions, 213 flow. Second operand 7 states and 612 transitions. [2022-01-19 07:38:31,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 112 transitions, 341 flow [2022-01-19 07:38:31,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:38:31,844 INFO L242 Difference]: Finished difference. Result has 104 places, 95 transitions, 239 flow [2022-01-19 07:38:31,844 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2022-01-19 07:38:31,846 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2022-01-19 07:38:31,846 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 239 flow [2022-01-19 07:38:31,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:31,847 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:31,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:38:31,848 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1355540335, now seen corresponding path program 3 times [2022-01-19 07:38:31,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:31,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633150866] [2022-01-19 07:38:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:31,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:31,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633150866] [2022-01-19 07:38:31,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633150866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:38:31,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:38:31,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:38:31,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679304619] [2022-01-19 07:38:31,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:38:31,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:38:31,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:38:31,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:38:31,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 109 [2022-01-19 07:38:31,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:31,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:31,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 109 [2022-01-19 07:38:31,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:32,182 INFO L129 PetriNetUnfolder]: 224/608 cut-off events. [2022-01-19 07:38:32,182 INFO L130 PetriNetUnfolder]: For 248/248 co-relation queries the response was YES. [2022-01-19 07:38:32,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 608 events. 224/608 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3213 event pairs, 29 based on Foata normal form. 6/557 useless extension candidates. Maximal degree in co-relation 1166. Up to 157 conditions per place. [2022-01-19 07:38:32,187 INFO L132 encePairwiseOnDemand]: 98/109 looper letters, 33 selfloop transitions, 7 changer transitions 36/142 dead transitions. [2022-01-19 07:38:32,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 142 transitions, 539 flow [2022-01-19 07:38:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 07:38:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 07:38:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 784 transitions. [2022-01-19 07:38:32,190 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.799184505606524 [2022-01-19 07:38:32,190 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 784 transitions. [2022-01-19 07:38:32,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 784 transitions. [2022-01-19 07:38:32,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:32,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 784 transitions. [2022-01-19 07:38:32,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.11111111111111) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:32,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:32,196 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:32,196 INFO L186 Difference]: Start difference. First operand has 104 places, 95 transitions, 239 flow. Second operand 9 states and 784 transitions. [2022-01-19 07:38:32,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 142 transitions, 539 flow [2022-01-19 07:38:32,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 142 transitions, 526 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 07:38:32,200 INFO L242 Difference]: Finished difference. Result has 113 places, 97 transitions, 281 flow [2022-01-19 07:38:32,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=281, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2022-01-19 07:38:32,201 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 15 predicate places. [2022-01-19 07:38:32,201 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 281 flow [2022-01-19 07:38:32,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:32,202 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:32,202 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:32,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:38:32,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2035553460, now seen corresponding path program 1 times [2022-01-19 07:38:32,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:32,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394314006] [2022-01-19 07:38:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:32,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:32,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:32,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394314006] [2022-01-19 07:38:32,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394314006] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:38:32,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057860578] [2022-01-19 07:38:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:32,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:38:32,363 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) [2022-01-19 07:38:32,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 07:38:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:32,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 07:38:32,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:38:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:32,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:38:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:32,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057860578] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:38:32,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:38:32,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-19 07:38:32,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314454713] [2022-01-19 07:38:32,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:38:32,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:38:32,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:38:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:38:32,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 109 [2022-01-19 07:38:32,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:32,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:32,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 109 [2022-01-19 07:38:32,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:32,989 INFO L129 PetriNetUnfolder]: 323/827 cut-off events. [2022-01-19 07:38:32,989 INFO L130 PetriNetUnfolder]: For 656/662 co-relation queries the response was YES. [2022-01-19 07:38:32,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 827 events. 323/827 cut-off events. For 656/662 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4805 event pairs, 17 based on Foata normal form. 6/753 useless extension candidates. Maximal degree in co-relation 1882. Up to 179 conditions per place. [2022-01-19 07:38:32,997 INFO L132 encePairwiseOnDemand]: 100/109 looper letters, 55 selfloop transitions, 18 changer transitions 6/148 dead transitions. [2022-01-19 07:38:32,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 148 transitions, 678 flow [2022-01-19 07:38:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:38:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:38:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2022-01-19 07:38:32,999 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.854521625163827 [2022-01-19 07:38:32,999 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2022-01-19 07:38:32,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2022-01-19 07:38:33,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:33,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2022-01-19 07:38:33,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,003 INFO L186 Difference]: Start difference. First operand has 113 places, 97 transitions, 281 flow. Second operand 7 states and 652 transitions. [2022-01-19 07:38:33,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 148 transitions, 678 flow [2022-01-19 07:38:33,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 148 transitions, 650 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-01-19 07:38:33,010 INFO L242 Difference]: Finished difference. Result has 116 places, 110 transitions, 420 flow [2022-01-19 07:38:33,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=420, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2022-01-19 07:38:33,011 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 18 predicate places. [2022-01-19 07:38:33,011 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 420 flow [2022-01-19 07:38:33,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,011 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:33,012 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:33,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 07:38:33,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:33,228 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash 60102788, now seen corresponding path program 2 times [2022-01-19 07:38:33,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:33,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824244204] [2022-01-19 07:38:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:33,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:33,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:33,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824244204] [2022-01-19 07:38:33,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824244204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:38:33,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:38:33,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:38:33,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928812711] [2022-01-19 07:38:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:38:33,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:38:33,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:33,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:38:33,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:38:33,321 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2022-01-19 07:38:33,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 110 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:33,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2022-01-19 07:38:33,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:33,423 INFO L129 PetriNetUnfolder]: 174/629 cut-off events. [2022-01-19 07:38:33,423 INFO L130 PetriNetUnfolder]: For 889/916 co-relation queries the response was YES. [2022-01-19 07:38:33,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 629 events. 174/629 cut-off events. For 889/916 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3518 event pairs, 21 based on Foata normal form. 28/583 useless extension candidates. Maximal degree in co-relation 1451. Up to 107 conditions per place. [2022-01-19 07:38:33,430 INFO L132 encePairwiseOnDemand]: 102/109 looper letters, 21 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2022-01-19 07:38:33,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 505 flow [2022-01-19 07:38:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:38:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:38:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2022-01-19 07:38:33,434 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2022-01-19 07:38:33,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2022-01-19 07:38:33,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2022-01-19 07:38:33,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:33,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2022-01-19 07:38:33,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,438 INFO L186 Difference]: Start difference. First operand has 116 places, 110 transitions, 420 flow. Second operand 5 states and 465 transitions. [2022-01-19 07:38:33,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 505 flow [2022-01-19 07:38:33,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:38:33,445 INFO L242 Difference]: Finished difference. Result has 120 places, 111 transitions, 440 flow [2022-01-19 07:38:33,445 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=120, PETRI_TRANSITIONS=111} [2022-01-19 07:38:33,446 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 22 predicate places. [2022-01-19 07:38:33,446 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 440 flow [2022-01-19 07:38:33,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,447 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:33,447 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:33,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:38:33,447 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1754557135, now seen corresponding path program 1 times [2022-01-19 07:38:33,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289692420] [2022-01-19 07:38:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:33,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:33,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:33,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289692420] [2022-01-19 07:38:33,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289692420] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:38:33,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025220668] [2022-01-19 07:38:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:33,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:33,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:38:33,512 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) [2022-01-19 07:38:33,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 07:38:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:33,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 07:38:33,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:38:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:38:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:33,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025220668] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:38:33,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:38:33,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-19 07:38:33,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145820064] [2022-01-19 07:38:33,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:38:33,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:38:33,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:38:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:38:33,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 109 [2022-01-19 07:38:33,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:33,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:33,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 109 [2022-01-19 07:38:33,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:34,023 INFO L129 PetriNetUnfolder]: 402/1166 cut-off events. [2022-01-19 07:38:34,023 INFO L130 PetriNetUnfolder]: For 2293/2329 co-relation queries the response was YES. [2022-01-19 07:38:34,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 1166 events. 402/1166 cut-off events. For 2293/2329 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7554 event pairs, 41 based on Foata normal form. 45/1115 useless extension candidates. Maximal degree in co-relation 3302. Up to 313 conditions per place. [2022-01-19 07:38:34,033 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 68 selfloop transitions, 19 changer transitions 5/165 dead transitions. [2022-01-19 07:38:34,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 165 transitions, 993 flow [2022-01-19 07:38:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:38:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:38:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2022-01-19 07:38:34,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8654434250764526 [2022-01-19 07:38:34,036 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2022-01-19 07:38:34,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2022-01-19 07:38:34,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:34,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2022-01-19 07:38:34,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,039 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,039 INFO L186 Difference]: Start difference. First operand has 120 places, 111 transitions, 440 flow. Second operand 6 states and 566 transitions. [2022-01-19 07:38:34,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 165 transitions, 993 flow [2022-01-19 07:38:34,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 165 transitions, 982 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:38:34,047 INFO L242 Difference]: Finished difference. Result has 126 places, 124 transitions, 635 flow [2022-01-19 07:38:34,047 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=635, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2022-01-19 07:38:34,048 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 28 predicate places. [2022-01-19 07:38:34,048 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 635 flow [2022-01-19 07:38:34,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:34,049 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:34,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 07:38:34,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 07:38:34,268 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1404627543, now seen corresponding path program 2 times [2022-01-19 07:38:34,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:34,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189663749] [2022-01-19 07:38:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:34,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:34,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:34,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189663749] [2022-01-19 07:38:34,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189663749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:38:34,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:38:34,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:38:34,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147041145] [2022-01-19 07:38:34,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:38:34,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:38:34,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:38:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:38:34,348 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2022-01-19 07:38:34,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 124 transitions, 635 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:34,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2022-01-19 07:38:34,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:34,480 INFO L129 PetriNetUnfolder]: 225/981 cut-off events. [2022-01-19 07:38:34,481 INFO L130 PetriNetUnfolder]: For 2345/2403 co-relation queries the response was YES. [2022-01-19 07:38:34,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2637 conditions, 981 events. 225/981 cut-off events. For 2345/2403 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6826 event pairs, 31 based on Foata normal form. 52/927 useless extension candidates. Maximal degree in co-relation 2617. Up to 171 conditions per place. [2022-01-19 07:38:34,492 INFO L132 encePairwiseOnDemand]: 102/109 looper letters, 22 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2022-01-19 07:38:34,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 133 transitions, 729 flow [2022-01-19 07:38:34,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:38:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:38:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2022-01-19 07:38:34,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8513761467889909 [2022-01-19 07:38:34,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2022-01-19 07:38:34,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2022-01-19 07:38:34,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:34,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2022-01-19 07:38:34,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,498 INFO L186 Difference]: Start difference. First operand has 126 places, 124 transitions, 635 flow. Second operand 5 states and 464 transitions. [2022-01-19 07:38:34,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 133 transitions, 729 flow [2022-01-19 07:38:34,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 133 transitions, 729 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:38:34,506 INFO L242 Difference]: Finished difference. Result has 131 places, 125 transitions, 659 flow [2022-01-19 07:38:34,507 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=659, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2022-01-19 07:38:34,509 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 33 predicate places. [2022-01-19 07:38:34,509 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 659 flow [2022-01-19 07:38:34,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:34,510 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:34,510 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:34,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 07:38:34,510 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash -458505152, now seen corresponding path program 1 times [2022-01-19 07:38:34,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:34,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789726840] [2022-01-19 07:38:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:34,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:34,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789726840] [2022-01-19 07:38:34,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789726840] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:38:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431293175] [2022-01-19 07:38:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:34,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:34,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:38:34,627 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) [2022-01-19 07:38:34,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 07:38:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:34,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 07:38:34,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:38:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:34,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:38:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:35,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431293175] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:38:35,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:38:35,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-01-19 07:38:35,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968638524] [2022-01-19 07:38:35,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:38:35,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:38:35,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:35,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:38:35,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:38:35,089 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 109 [2022-01-19 07:38:35,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 659 flow. Second operand has 14 states, 14 states have (on average 81.78571428571429) internal successors, (1145), 14 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:35,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:35,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 109 [2022-01-19 07:38:35,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:35,774 INFO L129 PetriNetUnfolder]: 917/2722 cut-off events. [2022-01-19 07:38:35,774 INFO L130 PetriNetUnfolder]: For 9707/9931 co-relation queries the response was YES. [2022-01-19 07:38:35,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9082 conditions, 2722 events. 917/2722 cut-off events. For 9707/9931 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23012 event pairs, 44 based on Foata normal form. 120/2619 useless extension candidates. Maximal degree in co-relation 9060. Up to 348 conditions per place. [2022-01-19 07:38:35,800 INFO L132 encePairwiseOnDemand]: 95/109 looper letters, 88 selfloop transitions, 39 changer transitions 102/306 dead transitions. [2022-01-19 07:38:35,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 306 transitions, 2660 flow [2022-01-19 07:38:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:38:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:38:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1793 transitions. [2022-01-19 07:38:35,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833114897335081 [2022-01-19 07:38:35,805 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1793 transitions. [2022-01-19 07:38:35,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1793 transitions. [2022-01-19 07:38:35,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:35,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1793 transitions. [2022-01-19 07:38:35,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 85.38095238095238) internal successors, (1793), 21 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:35,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:35,813 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:35,813 INFO L186 Difference]: Start difference. First operand has 131 places, 125 transitions, 659 flow. Second operand 21 states and 1793 transitions. [2022-01-19 07:38:35,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 306 transitions, 2660 flow [2022-01-19 07:38:35,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 306 transitions, 2637 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:38:35,834 INFO L242 Difference]: Finished difference. Result has 161 places, 152 transitions, 1077 flow [2022-01-19 07:38:35,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1077, PETRI_PLACES=161, PETRI_TRANSITIONS=152} [2022-01-19 07:38:35,835 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 63 predicate places. [2022-01-19 07:38:35,835 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 152 transitions, 1077 flow [2022-01-19 07:38:35,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.78571428571429) internal successors, (1145), 14 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:35,836 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:35,836 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:35,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 07:38:36,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:36,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:36,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash 118312707, now seen corresponding path program 2 times [2022-01-19 07:38:36,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:36,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638483628] [2022-01-19 07:38:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:36,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:38:36,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638483628] [2022-01-19 07:38:36,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638483628] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:38:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490573478] [2022-01-19 07:38:36,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:38:36,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:36,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:38:36,137 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) [2022-01-19 07:38:36,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 07:38:36,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 07:38:36,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:38:36,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 07:38:36,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:38:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 07:38:36,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:38:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 07:38:36,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490573478] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:38:36,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:38:36,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2022-01-19 07:38:36,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517430646] [2022-01-19 07:38:36,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:38:36,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:38:36,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:38:36,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-19 07:38:36,579 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 109 [2022-01-19 07:38:36,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 152 transitions, 1077 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:36,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:36,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 109 [2022-01-19 07:38:36,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:37,089 INFO L129 PetriNetUnfolder]: 1210/3137 cut-off events. [2022-01-19 07:38:37,089 INFO L130 PetriNetUnfolder]: For 19031/19143 co-relation queries the response was YES. [2022-01-19 07:38:37,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12947 conditions, 3137 events. 1210/3137 cut-off events. For 19031/19143 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 25830 event pairs, 15 based on Foata normal form. 36/2949 useless extension candidates. Maximal degree in co-relation 12912. Up to 992 conditions per place. [2022-01-19 07:38:37,130 INFO L132 encePairwiseOnDemand]: 100/109 looper letters, 123 selfloop transitions, 64 changer transitions 0/256 dead transitions. [2022-01-19 07:38:37,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 256 transitions, 2606 flow [2022-01-19 07:38:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:38:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:38:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2022-01-19 07:38:37,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.854521625163827 [2022-01-19 07:38:37,133 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2022-01-19 07:38:37,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2022-01-19 07:38:37,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:37,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2022-01-19 07:38:37,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:37,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:37,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:37,136 INFO L186 Difference]: Start difference. First operand has 161 places, 152 transitions, 1077 flow. Second operand 7 states and 652 transitions. [2022-01-19 07:38:37,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 256 transitions, 2606 flow [2022-01-19 07:38:37,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 256 transitions, 2398 flow, removed 101 selfloop flow, removed 8 redundant places. [2022-01-19 07:38:37,188 INFO L242 Difference]: Finished difference. Result has 156 places, 197 transitions, 1854 flow [2022-01-19 07:38:37,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1854, PETRI_PLACES=156, PETRI_TRANSITIONS=197} [2022-01-19 07:38:37,189 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 58 predicate places. [2022-01-19 07:38:37,189 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 197 transitions, 1854 flow [2022-01-19 07:38:37,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:37,189 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:37,189 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:37,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 07:38:37,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:37,403 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash -170804443, now seen corresponding path program 3 times [2022-01-19 07:38:37,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:37,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814015978] [2022-01-19 07:38:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:37,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:38:37,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:37,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814015978] [2022-01-19 07:38:37,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814015978] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:38:37,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075839012] [2022-01-19 07:38:37,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 07:38:37,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:37,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:38:37,488 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) [2022-01-19 07:38:37,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 07:38:37,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 07:38:37,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:38:37,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-19 07:38:37,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:38:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:37,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:38:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:38:38,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075839012] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:38:38,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:38:38,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 9] total 18 [2022-01-19 07:38:38,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832354166] [2022-01-19 07:38:38,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:38:38,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 07:38:38,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 07:38:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-01-19 07:38:38,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 109 [2022-01-19 07:38:38,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 197 transitions, 1854 flow. Second operand has 18 states, 18 states have (on average 80.5) internal successors, (1449), 18 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:38,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:38,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 109 [2022-01-19 07:38:38,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:40,676 INFO L129 PetriNetUnfolder]: 3274/9092 cut-off events. [2022-01-19 07:38:40,676 INFO L130 PetriNetUnfolder]: For 62835/63422 co-relation queries the response was YES. [2022-01-19 07:38:40,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39699 conditions, 9092 events. 3274/9092 cut-off events. For 62835/63422 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 94556 event pairs, 68 based on Foata normal form. 259/8589 useless extension candidates. Maximal degree in co-relation 39663. Up to 1467 conditions per place. [2022-01-19 07:38:40,794 INFO L132 encePairwiseOnDemand]: 94/109 looper letters, 276 selfloop transitions, 260 changer transitions 167/800 dead transitions. [2022-01-19 07:38:40,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 800 transitions, 11420 flow [2022-01-19 07:38:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 07:38:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 07:38:40,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3636 transitions. [2022-01-19 07:38:40,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7757627480264562 [2022-01-19 07:38:40,803 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3636 transitions. [2022-01-19 07:38:40,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3636 transitions. [2022-01-19 07:38:40,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:40,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3636 transitions. [2022-01-19 07:38:40,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 84.55813953488372) internal successors, (3636), 43 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:40,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 109.0) internal successors, (4796), 44 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:40,825 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 109.0) internal successors, (4796), 44 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:40,825 INFO L186 Difference]: Start difference. First operand has 156 places, 197 transitions, 1854 flow. Second operand 43 states and 3636 transitions. [2022-01-19 07:38:40,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 800 transitions, 11420 flow [2022-01-19 07:38:41,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 800 transitions, 11308 flow, removed 56 selfloop flow, removed 0 redundant places. [2022-01-19 07:38:41,066 INFO L242 Difference]: Finished difference. Result has 216 places, 415 transitions, 5077 flow [2022-01-19 07:38:41,066 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5077, PETRI_PLACES=216, PETRI_TRANSITIONS=415} [2022-01-19 07:38:41,067 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 118 predicate places. [2022-01-19 07:38:41,067 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 415 transitions, 5077 flow [2022-01-19 07:38:41,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 80.5) internal successors, (1449), 18 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:41,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:41,068 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:41,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 07:38:41,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-19 07:38:41,283 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash 840797718, now seen corresponding path program 1 times [2022-01-19 07:38:41,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:41,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905656635] [2022-01-19 07:38:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:41,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:38:41,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:41,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905656635] [2022-01-19 07:38:41,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905656635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:38:41,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994527577] [2022-01-19 07:38:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:41,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:41,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:38:41,419 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) [2022-01-19 07:38:41,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 07:38:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:41,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 07:38:41,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:38:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:38:41,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:38:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:38:42,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994527577] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:38:42,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:38:42,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 18 [2022-01-19 07:38:42,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666286467] [2022-01-19 07:38:42,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:38:42,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 07:38:42,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:42,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 07:38:42,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-01-19 07:38:42,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 109 [2022-01-19 07:38:42,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 415 transitions, 5077 flow. Second operand has 18 states, 18 states have (on average 80.5) internal successors, (1449), 18 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:42,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:42,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 109 [2022-01-19 07:38:42,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:45,787 INFO L129 PetriNetUnfolder]: 7439/18749 cut-off events. [2022-01-19 07:38:45,787 INFO L130 PetriNetUnfolder]: For 236377/237291 co-relation queries the response was YES. [2022-01-19 07:38:45,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97347 conditions, 18749 events. 7439/18749 cut-off events. For 236377/237291 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 205111 event pairs, 379 based on Foata normal form. 306/17398 useless extension candidates. Maximal degree in co-relation 97292. Up to 3087 conditions per place. [2022-01-19 07:38:46,060 INFO L132 encePairwiseOnDemand]: 95/109 looper letters, 646 selfloop transitions, 152 changer transitions 146/1075 dead transitions. [2022-01-19 07:38:46,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 1075 transitions, 15928 flow [2022-01-19 07:38:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 07:38:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 07:38:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1621 transitions. [2022-01-19 07:38:46,064 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7827136648961854 [2022-01-19 07:38:46,064 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1621 transitions. [2022-01-19 07:38:46,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1621 transitions. [2022-01-19 07:38:46,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:46,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1621 transitions. [2022-01-19 07:38:46,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 85.3157894736842) internal successors, (1621), 19 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:46,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 109.0) internal successors, (2180), 20 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:46,074 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 109.0) internal successors, (2180), 20 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:46,074 INFO L186 Difference]: Start difference. First operand has 216 places, 415 transitions, 5077 flow. Second operand 19 states and 1621 transitions. [2022-01-19 07:38:46,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 1075 transitions, 15928 flow [2022-01-19 07:38:47,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 1075 transitions, 15114 flow, removed 395 selfloop flow, removed 11 redundant places. [2022-01-19 07:38:47,057 INFO L242 Difference]: Finished difference. Result has 224 places, 512 transitions, 6785 flow [2022-01-19 07:38:47,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=4689, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6785, PETRI_PLACES=224, PETRI_TRANSITIONS=512} [2022-01-19 07:38:47,058 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 126 predicate places. [2022-01-19 07:38:47,058 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 512 transitions, 6785 flow [2022-01-19 07:38:47,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 80.5) internal successors, (1449), 18 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:47,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:47,059 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:47,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 07:38:47,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:47,285 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1333707901, now seen corresponding path program 1 times [2022-01-19 07:38:47,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:47,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765089663] [2022-01-19 07:38:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:47,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:38:47,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:47,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765089663] [2022-01-19 07:38:47,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765089663] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:38:47,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209913867] [2022-01-19 07:38:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:47,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:47,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:38:47,407 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) [2022-01-19 07:38:47,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 07:38:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:47,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 07:38:47,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:38:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:38:47,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:38:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:38:47,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209913867] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:38:47,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:38:47,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-01-19 07:38:47,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041762306] [2022-01-19 07:38:47,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:38:47,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 07:38:47,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 07:38:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-19 07:38:47,930 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 109 [2022-01-19 07:38:47,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 512 transitions, 6785 flow. Second operand has 15 states, 15 states have (on average 81.93333333333334) internal successors, (1229), 15 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:47,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:47,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 109 [2022-01-19 07:38:47,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:38:53,656 INFO L129 PetriNetUnfolder]: 10922/27413 cut-off events. [2022-01-19 07:38:53,657 INFO L130 PetriNetUnfolder]: For 419336/421644 co-relation queries the response was YES. [2022-01-19 07:38:53,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146776 conditions, 27413 events. 10922/27413 cut-off events. For 419336/421644 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 316758 event pairs, 228 based on Foata normal form. 460/25853 useless extension candidates. Maximal degree in co-relation 146718. Up to 4399 conditions per place. [2022-01-19 07:38:54,060 INFO L132 encePairwiseOnDemand]: 96/109 looper letters, 271 selfloop transitions, 576 changer transitions 383/1363 dead transitions. [2022-01-19 07:38:54,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 1363 transitions, 22233 flow [2022-01-19 07:38:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 07:38:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 07:38:54,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2236 transitions. [2022-01-19 07:38:54,064 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7889908256880734 [2022-01-19 07:38:54,064 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2236 transitions. [2022-01-19 07:38:54,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2236 transitions. [2022-01-19 07:38:54,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:38:54,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2236 transitions. [2022-01-19 07:38:54,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 86.0) internal successors, (2236), 26 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) [2022-01-19 07:38:54,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 109.0) internal successors, (2943), 27 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:54,087 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 109.0) internal successors, (2943), 27 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:54,088 INFO L186 Difference]: Start difference. First operand has 224 places, 512 transitions, 6785 flow. Second operand 26 states and 2236 transitions. [2022-01-19 07:38:54,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 1363 transitions, 22233 flow [2022-01-19 07:38:55,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1363 transitions, 21310 flow, removed 385 selfloop flow, removed 16 redundant places. [2022-01-19 07:38:55,542 INFO L242 Difference]: Finished difference. Result has 245 places, 871 transitions, 14527 flow [2022-01-19 07:38:55,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=6505, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=14527, PETRI_PLACES=245, PETRI_TRANSITIONS=871} [2022-01-19 07:38:55,543 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 147 predicate places. [2022-01-19 07:38:55,543 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 871 transitions, 14527 flow [2022-01-19 07:38:55,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 81.93333333333334) internal successors, (1229), 15 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:55,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:38:55,543 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:38:55,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 07:38:55,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:38:55,744 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:38:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:38:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash 809566608, now seen corresponding path program 4 times [2022-01-19 07:38:55,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:38:55,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58426015] [2022-01-19 07:38:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:38:55,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:38:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:38:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-19 07:38:55,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:38:55,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58426015] [2022-01-19 07:38:55,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58426015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:38:55,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:38:55,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:38:55,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658861366] [2022-01-19 07:38:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:38:55,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:38:55,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:38:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:38:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:38:55,855 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 109 [2022-01-19 07:38:55,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 871 transitions, 14527 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:38:55,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:38:55,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 109 [2022-01-19 07:38:55,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:39:02,849 INFO L129 PetriNetUnfolder]: 13343/31723 cut-off events. [2022-01-19 07:39:02,849 INFO L130 PetriNetUnfolder]: For 591077/594041 co-relation queries the response was YES. [2022-01-19 07:39:03,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193876 conditions, 31723 events. 13343/31723 cut-off events. For 591077/594041 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 369559 event pairs, 191 based on Foata normal form. 822/30235 useless extension candidates. Maximal degree in co-relation 193810. Up to 13195 conditions per place. [2022-01-19 07:39:03,798 INFO L132 encePairwiseOnDemand]: 100/109 looper letters, 1044 selfloop transitions, 66 changer transitions 244/1423 dead transitions. [2022-01-19 07:39:03,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 1423 transitions, 26956 flow [2022-01-19 07:39:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:39:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:39:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 480 transitions. [2022-01-19 07:39:03,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8807339449541285 [2022-01-19 07:39:03,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 480 transitions. [2022-01-19 07:39:03,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 480 transitions. [2022-01-19 07:39:03,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:39:03,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 480 transitions. [2022-01-19 07:39:03,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:03,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:03,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:03,807 INFO L186 Difference]: Start difference. First operand has 245 places, 871 transitions, 14527 flow. Second operand 5 states and 480 transitions. [2022-01-19 07:39:03,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 1423 transitions, 26956 flow [2022-01-19 07:39:11,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1423 transitions, 25066 flow, removed 942 selfloop flow, removed 4 redundant places. [2022-01-19 07:39:11,044 INFO L242 Difference]: Finished difference. Result has 245 places, 765 transitions, 11276 flow [2022-01-19 07:39:11,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=13357, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11276, PETRI_PLACES=245, PETRI_TRANSITIONS=765} [2022-01-19 07:39:11,046 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 147 predicate places. [2022-01-19 07:39:11,046 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 765 transitions, 11276 flow [2022-01-19 07:39:11,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:11,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:39:11,046 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:39:11,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 07:39:11,047 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:39:11,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:39:11,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2129325404, now seen corresponding path program 5 times [2022-01-19 07:39:11,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:39:11,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831340826] [2022-01-19 07:39:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:39:11,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:39:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:39:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 07:39:11,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:39:11,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831340826] [2022-01-19 07:39:11,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831340826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:39:11,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062738042] [2022-01-19 07:39:11,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 07:39:11,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:39:11,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:39:11,129 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) [2022-01-19 07:39:11,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 07:39:11,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-19 07:39:11,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:39:11,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 07:39:11,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:39:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 07:39:11,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:39:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 07:39:11,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062738042] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:39:11,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:39:11,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-01-19 07:39:11,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587304722] [2022-01-19 07:39:11,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:39:11,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:39:11,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:39:11,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:39:11,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:39:11,634 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2022-01-19 07:39:11,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 765 transitions, 11276 flow. Second operand has 10 states, 10 states have (on average 90.5) internal successors, (905), 10 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:11,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:39:11,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2022-01-19 07:39:11,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:39:20,755 INFO L129 PetriNetUnfolder]: 14535/41385 cut-off events. [2022-01-19 07:39:20,756 INFO L130 PetriNetUnfolder]: For 543274/544938 co-relation queries the response was YES. [2022-01-19 07:39:21,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224887 conditions, 41385 events. 14535/41385 cut-off events. For 543274/544938 co-relation queries the response was YES. Maximal size of possible extension queue 1919. Compared 527939 event pairs, 546 based on Foata normal form. 1101/38592 useless extension candidates. Maximal degree in co-relation 224818. Up to 8598 conditions per place. [2022-01-19 07:39:21,801 INFO L132 encePairwiseOnDemand]: 102/109 looper letters, 539 selfloop transitions, 217 changer transitions 0/1091 dead transitions. [2022-01-19 07:39:21,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1091 transitions, 18334 flow [2022-01-19 07:39:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 07:39:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 07:39:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 752 transitions. [2022-01-19 07:39:21,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8623853211009175 [2022-01-19 07:39:21,803 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 752 transitions. [2022-01-19 07:39:21,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 752 transitions. [2022-01-19 07:39:21,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:39:21,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 752 transitions. [2022-01-19 07:39:21,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.0) internal successors, (752), 8 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:21,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:21,806 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:21,806 INFO L186 Difference]: Start difference. First operand has 245 places, 765 transitions, 11276 flow. Second operand 8 states and 752 transitions. [2022-01-19 07:39:21,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1091 transitions, 18334 flow [2022-01-19 07:39:26,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 1091 transitions, 17793 flow, removed 234 selfloop flow, removed 9 redundant places. [2022-01-19 07:39:26,478 INFO L242 Difference]: Finished difference. Result has 235 places, 831 transitions, 13009 flow [2022-01-19 07:39:26,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=10098, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13009, PETRI_PLACES=235, PETRI_TRANSITIONS=831} [2022-01-19 07:39:26,479 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 137 predicate places. [2022-01-19 07:39:26,480 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 831 transitions, 13009 flow [2022-01-19 07:39:26,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.5) internal successors, (905), 10 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:26,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:39:26,480 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:39:26,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 07:39:26,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-19 07:39:26,689 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:39:26,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:39:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1286772282, now seen corresponding path program 6 times [2022-01-19 07:39:26,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:39:26,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695291529] [2022-01-19 07:39:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:39:26,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:39:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:39:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 34 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 07:39:26,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:39:26,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695291529] [2022-01-19 07:39:26,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695291529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:39:26,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171983952] [2022-01-19 07:39:26,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 07:39:26,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:39:26,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:39:26,822 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) [2022-01-19 07:39:26,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 07:39:26,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-19 07:39:26,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:39:26,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 07:39:26,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:39:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 07:39:27,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:39:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 07:39:27,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171983952] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:39:27,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:39:27,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-01-19 07:39:27,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909411434] [2022-01-19 07:39:27,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:39:27,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 07:39:27,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:39:27,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 07:39:27,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-01-19 07:39:27,385 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 109 [2022-01-19 07:39:27,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 831 transitions, 13009 flow. Second operand has 16 states, 16 states have (on average 80.25) internal successors, (1284), 16 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:27,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:39:27,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 109 [2022-01-19 07:39:27,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:39:45,277 INFO L129 PetriNetUnfolder]: 33317/75303 cut-off events. [2022-01-19 07:39:45,278 INFO L130 PetriNetUnfolder]: For 1109256/1112716 co-relation queries the response was YES. [2022-01-19 07:39:46,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452786 conditions, 75303 events. 33317/75303 cut-off events. For 1109256/1112716 co-relation queries the response was YES. Maximal size of possible extension queue 3801. Compared 941921 event pairs, 237 based on Foata normal form. 1303/70724 useless extension candidates. Maximal degree in co-relation 452721. Up to 13894 conditions per place. [2022-01-19 07:39:46,936 INFO L132 encePairwiseOnDemand]: 93/109 looper letters, 510 selfloop transitions, 1167 changer transitions 520/2261 dead transitions. [2022-01-19 07:39:46,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 2261 transitions, 43796 flow [2022-01-19 07:39:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:39:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:39:46,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3835 transitions. [2022-01-19 07:39:46,942 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648583964898285 [2022-01-19 07:39:46,942 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3835 transitions. [2022-01-19 07:39:46,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3835 transitions. [2022-01-19 07:39:46,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:39:46,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3835 transitions. [2022-01-19 07:39:46,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 83.3695652173913) internal successors, (3835), 46 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:46,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 109.0) internal successors, (5123), 47 states have internal predecessors, (5123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:46,956 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 109.0) internal successors, (5123), 47 states have internal predecessors, (5123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:46,956 INFO L186 Difference]: Start difference. First operand has 235 places, 831 transitions, 13009 flow. Second operand 46 states and 3835 transitions. [2022-01-19 07:39:46,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 2261 transitions, 43796 flow [2022-01-19 07:39:56,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 2261 transitions, 43160 flow, removed 296 selfloop flow, removed 4 redundant places. [2022-01-19 07:39:56,314 INFO L242 Difference]: Finished difference. Result has 314 places, 1427 transitions, 27533 flow [2022-01-19 07:39:56,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=12820, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=27533, PETRI_PLACES=314, PETRI_TRANSITIONS=1427} [2022-01-19 07:39:56,316 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 216 predicate places. [2022-01-19 07:39:56,316 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 1427 transitions, 27533 flow [2022-01-19 07:39:56,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.25) internal successors, (1284), 16 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:56,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:39:56,316 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:39:56,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 07:39:56,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-19 07:39:56,531 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:39:56,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:39:56,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1848169599, now seen corresponding path program 7 times [2022-01-19 07:39:56,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:39:56,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764421280] [2022-01-19 07:39:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:39:56,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:39:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:39:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-19 07:39:56,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:39:56,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764421280] [2022-01-19 07:39:56,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764421280] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:39:56,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763048313] [2022-01-19 07:39:56,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 07:39:56,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:39:56,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:39:56,632 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) [2022-01-19 07:39:56,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 07:39:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:39:56,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-19 07:39:56,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:39:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 07:39:57,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:39:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 52 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-19 07:39:57,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763048313] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:39:57,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:39:57,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 21 [2022-01-19 07:39:57,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090929510] [2022-01-19 07:39:57,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:39:57,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-19 07:39:57,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:39:57,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-19 07:39:57,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-01-19 07:39:57,314 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 109 [2022-01-19 07:39:57,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 1427 transitions, 27533 flow. Second operand has 21 states, 21 states have (on average 80.19047619047619) internal successors, (1684), 21 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:39:57,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:39:57,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 109 [2022-01-19 07:39:57,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:40:54,849 INFO L129 PetriNetUnfolder]: 70540/164427 cut-off events. [2022-01-19 07:40:54,850 INFO L130 PetriNetUnfolder]: For 3010624/3015207 co-relation queries the response was YES. [2022-01-19 07:40:59,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1071861 conditions, 164427 events. 70540/164427 cut-off events. For 3010624/3015207 co-relation queries the response was YES. Maximal size of possible extension queue 7374. Compared 2275219 event pairs, 1481 based on Foata normal form. 1138/151627 useless extension candidates. Maximal degree in co-relation 1071758. Up to 32592 conditions per place. [2022-01-19 07:41:00,088 INFO L132 encePairwiseOnDemand]: 94/109 looper letters, 2535 selfloop transitions, 2171 changer transitions 59/4969 dead transitions. [2022-01-19 07:41:00,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 4969 transitions, 107760 flow [2022-01-19 07:41:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-19 07:41:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-01-19 07:41:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2834 transitions. [2022-01-19 07:41:00,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2022-01-19 07:41:00,094 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2834 transitions. [2022-01-19 07:41:00,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2834 transitions. [2022-01-19 07:41:00,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:41:00,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2834 transitions. [2022-01-19 07:41:00,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.87878787878788) internal successors, (2834), 33 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:41:00,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 109.0) internal successors, (3706), 34 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:41:00,103 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 109.0) internal successors, (3706), 34 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:41:00,103 INFO L186 Difference]: Start difference. First operand has 314 places, 1427 transitions, 27533 flow. Second operand 33 states and 2834 transitions. [2022-01-19 07:41:00,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 4969 transitions, 107760 flow [2022-01-19 07:42:17,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 4969 transitions, 103829 flow, removed 1957 selfloop flow, removed 34 redundant places. [2022-01-19 07:42:17,227 INFO L242 Difference]: Finished difference. Result has 308 places, 3157 transitions, 71976 flow [2022-01-19 07:42:17,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=26712, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=743, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=71976, PETRI_PLACES=308, PETRI_TRANSITIONS=3157} [2022-01-19 07:42:17,229 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 210 predicate places. [2022-01-19 07:42:17,229 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 3157 transitions, 71976 flow [2022-01-19 07:42:17,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 80.19047619047619) internal successors, (1684), 21 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:42:17,229 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:42:17,230 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:42:17,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 07:42:17,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-19 07:42:17,435 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:42:17,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:42:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash -243205894, now seen corresponding path program 2 times [2022-01-19 07:42:17,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:42:17,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171952397] [2022-01-19 07:42:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:42:17,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:42:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:42:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 07:42:17,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:42:17,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171952397] [2022-01-19 07:42:17,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171952397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:42:17,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762004084] [2022-01-19 07:42:17,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:42:17,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:42:17,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:42:17,517 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) [2022-01-19 07:42:17,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 07:42:17,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 07:42:17,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:42:17,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 07:42:17,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:42:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 07:42:17,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:42:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 07:42:17,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762004084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:42:17,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:42:17,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-01-19 07:42:17,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445210145] [2022-01-19 07:42:17,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:42:17,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:42:17,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:42:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:42:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:42:17,987 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2022-01-19 07:42:17,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 3157 transitions, 71976 flow. Second operand has 10 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:42:17,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:42:17,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2022-01-19 07:42:17,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:43:43,121 INFO L129 PetriNetUnfolder]: 67240/186059 cut-off events. [2022-01-19 07:43:43,121 INFO L130 PetriNetUnfolder]: For 3866259/3873023 co-relation queries the response was YES. [2022-01-19 07:43:48,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1207665 conditions, 186059 events. 67240/186059 cut-off events. For 3866259/3873023 co-relation queries the response was YES. Maximal size of possible extension queue 6959. Compared 2794586 event pairs, 2271 based on Foata normal form. 2368/171602 useless extension candidates. Maximal degree in co-relation 1207564. Up to 40987 conditions per place. [2022-01-19 07:43:49,189 INFO L132 encePairwiseOnDemand]: 102/109 looper letters, 2860 selfloop transitions, 953 changer transitions 0/4308 dead transitions. [2022-01-19 07:43:49,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 4308 transitions, 105870 flow [2022-01-19 07:43:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 07:43:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 07:43:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 751 transitions. [2022-01-19 07:43:49,191 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8612385321100917 [2022-01-19 07:43:49,191 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 751 transitions. [2022-01-19 07:43:49,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 751 transitions. [2022-01-19 07:43:49,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:43:49,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 751 transitions. [2022-01-19 07:43:49,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.875) internal successors, (751), 8 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:43:49,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:43:49,194 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:43:49,194 INFO L186 Difference]: Start difference. First operand has 308 places, 3157 transitions, 71976 flow. Second operand 8 states and 751 transitions. [2022-01-19 07:43:49,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 4308 transitions, 105870 flow [2022-01-19 07:45:33,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 4308 transitions, 100289 flow, removed 2512 selfloop flow, removed 9 redundant places. [2022-01-19 07:45:33,858 INFO L242 Difference]: Finished difference. Result has 307 places, 3305 transitions, 75342 flow [2022-01-19 07:45:33,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=61130, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=632, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2054, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=75342, PETRI_PLACES=307, PETRI_TRANSITIONS=3305} [2022-01-19 07:45:33,861 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 209 predicate places. [2022-01-19 07:45:33,861 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 3305 transitions, 75342 flow [2022-01-19 07:45:33,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:45:33,861 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:45:33,861 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:45:33,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 07:45:34,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 07:45:34,076 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:45:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:45:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1326148195, now seen corresponding path program 3 times [2022-01-19 07:45:34,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:45:34,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563649947] [2022-01-19 07:45:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:45:34,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:45:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:45:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 07:45:34,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:45:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563649947] [2022-01-19 07:45:34,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563649947] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:45:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11092267] [2022-01-19 07:45:34,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 07:45:34,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:45:34,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:45:34,224 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) [2022-01-19 07:45:34,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 07:45:34,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-19 07:45:34,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:45:34,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 07:45:34,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:45:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 19 proven. 41 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-19 07:45:34,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:45:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 33 proven. 27 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-19 07:45:34,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11092267] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:45:34,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:45:34,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 23 [2022-01-19 07:45:34,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703728126] [2022-01-19 07:45:34,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:45:34,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 07:45:34,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:45:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 07:45:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-01-19 07:45:34,888 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 109 [2022-01-19 07:45:34,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 3305 transitions, 75342 flow. Second operand has 23 states, 23 states have (on average 78.69565217391305) internal successors, (1810), 23 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:45:34,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:45:34,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 109 [2022-01-19 07:45:34,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:49:14,665 INFO L129 PetriNetUnfolder]: 143342/313707 cut-off events. [2022-01-19 07:49:14,665 INFO L130 PetriNetUnfolder]: For 6874863/6891202 co-relation queries the response was YES. [2022-01-19 07:49:22,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2160757 conditions, 313707 events. 143342/313707 cut-off events. For 6874863/6891202 co-relation queries the response was YES. Maximal size of possible extension queue 12119. Compared 4421199 event pairs, 1552 based on Foata normal form. 5998/296513 useless extension candidates. Maximal degree in co-relation 2160657. Up to 61172 conditions per place. [2022-01-19 07:49:24,263 INFO L132 encePairwiseOnDemand]: 93/109 looper letters, 1470 selfloop transitions, 5584 changer transitions 1686/8802 dead transitions. [2022-01-19 07:49:24,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 8802 transitions, 217178 flow [2022-01-19 07:49:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-01-19 07:49:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2022-01-19 07:49:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 13478 transitions. [2022-01-19 07:49:24,273 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7404274020765808 [2022-01-19 07:49:24,273 INFO L72 ComplementDD]: Start complementDD. Operand 167 states and 13478 transitions. [2022-01-19 07:49:24,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 167 states and 13478 transitions. [2022-01-19 07:49:24,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:49:24,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 167 states and 13478 transitions. [2022-01-19 07:49:24,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 168 states, 167 states have (on average 80.7065868263473) internal successors, (13478), 167 states have internal predecessors, (13478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:49:24,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 168 states, 168 states have (on average 109.0) internal successors, (18312), 168 states have internal predecessors, (18312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:49:24,319 INFO L81 ComplementDD]: Finished complementDD. Result has 168 states, 168 states have (on average 109.0) internal successors, (18312), 168 states have internal predecessors, (18312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:49:24,320 INFO L186 Difference]: Start difference. First operand has 307 places, 3305 transitions, 75342 flow. Second operand 167 states and 13478 transitions. [2022-01-19 07:49:24,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 8802 transitions, 217178 flow Received shutdown request... [2022-01-19 07:50:51,647 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 [2022-01-19 07:50:51,647 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 07:50:52,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-19 07:50:52,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2022-01-19 07:50:53,738 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 07:50:53,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 07:50:53,738 WARN L594 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2022-01-19 07:50:53,739 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 07:50:53,739 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 07:50:53,740 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 07:50:53,742 INFO L732 BasicCegarLoop]: Path program histogram: [7, 3, 3, 2, 2, 1, 1] [2022-01-19 07:50:53,743 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 07:50:53,743 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 07:50:53,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 07:50:53 BasicIcfg [2022-01-19 07:50:53,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 07:50:53,746 INFO L158 Benchmark]: Toolchain (without parser) took 744156.90ms. Allocated memory was 362.8MB in the beginning and 15.9GB in the end (delta: 15.6GB). Free memory was 310.4MB in the beginning and 7.7GB in the end (delta: -7.4GB). Peak memory consumption was 8.5GB. Max. memory is 16.0GB. [2022-01-19 07:50:53,746 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory is still 326.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:50:53,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.59ms. Allocated memory is still 362.8MB. Free memory was 310.1MB in the beginning and 334.5MB in the end (delta: -24.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.0GB. [2022-01-19 07:50:53,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.08ms. Allocated memory is still 362.8MB. Free memory was 334.5MB in the beginning and 332.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:50:53,747 INFO L158 Benchmark]: Boogie Preprocessor took 21.56ms. Allocated memory is still 362.8MB. Free memory was 332.4MB in the beginning and 331.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:50:53,747 INFO L158 Benchmark]: RCFGBuilder took 418.64ms. Allocated memory is still 362.8MB. Free memory was 331.0MB in the beginning and 314.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 07:50:53,747 INFO L158 Benchmark]: TraceAbstraction took 743424.14ms. Allocated memory was 362.8MB in the beginning and 15.9GB in the end (delta: 15.6GB). Free memory was 313.5MB in the beginning and 7.7GB in the end (delta: -7.4GB). Peak memory consumption was 8.5GB. Max. memory is 16.0GB. [2022-01-19 07:50:53,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory is still 326.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 257.59ms. Allocated memory is still 362.8MB. Free memory was 310.1MB in the beginning and 334.5MB in the end (delta: -24.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.08ms. Allocated memory is still 362.8MB. Free memory was 334.5MB in the beginning and 332.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.56ms. Allocated memory is still 362.8MB. Free memory was 332.4MB in the beginning and 331.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 418.64ms. Allocated memory is still 362.8MB. Free memory was 331.0MB in the beginning and 314.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 743424.14ms. Allocated memory was 362.8MB in the beginning and 15.9GB in the end (delta: 15.6GB). Free memory was 313.5MB in the beginning and 7.7GB in the end (delta: -7.4GB). Peak memory consumption was 8.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 114]: 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: 113]: 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: 115]: 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 7 procedures, 132 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 743.3s, OverallIterations: 19, TraceHistogramMax: 7, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 732.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2260 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2260 mSDsluCounter, 2658 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3524 mSDsCounter, 764 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6538 IncrementalHoareTripleChecker+Invalid, 7302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 764 mSolverCounterUnsat, 399 mSDtfsCounter, 6538 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2744 GetRequests, 2265 SyntacticMatches, 11 SemanticMatches, 468 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13608 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75342occurred in iteration=18, InterpolantAutomatonStates: 263, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 2860 NumberOfCodeBlocks, 2860 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 3967 ConstructedInterpolants, 0 QuantifiedInterpolants, 10240 SizeOfPredicates, 98 NumberOfNonLiveVariables, 2988 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 43 InterpolantComputations, 8 PerfectInterpolantSequences, 699/1152 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