/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:58:58,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:58:58,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:58:58,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:58:58,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:58:58,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:58:58,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:58:58,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:58:58,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:58:58,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:58:58,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:58:58,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:58:58,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:58:58,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:58:58,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:58:58,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:58:58,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:58:58,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:58:58,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:58:58,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:58:58,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:58:58,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:58:58,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:58:58,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:58:58,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 21:58:58,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 21:58:58,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 21:58:58,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 21:58:58,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 21:58:58,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 21:58:58,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:58:58,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:58:58,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:58:58,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:58:58,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:58:58,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:58:58,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:58:58,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:58:58,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:58:58,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:58:58,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:58:58,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 21:58:58,418 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:58:58,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:58:58,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:58:58,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:58:58,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:58:58,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:58:58,420 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:58:58,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:58:58,420 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:58:58,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:58:58,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:58:58,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:58:58,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:58:58,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:58:58,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:58:58,423 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:58:58,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:58:58,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:58:58,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:58:58,583 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:58:58,583 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:58:58,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-01-27 21:58:59,484 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:58:59,684 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:58:59,685 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-01-27 21:58:59,691 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/067d226fb/938eb7be26ee4d48b76d1110d7e73aff/FLAG006543866 [2023-01-27 21:58:59,703 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/067d226fb/938eb7be26ee4d48b76d1110d7e73aff [2023-01-27 21:58:59,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:58:59,705 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:58:59,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:58:59,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:58:59,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:58:59,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76de957c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59, skipping insertion in model container [2023-01-27 21:58:59,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:58:59,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:58:59,828 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2023-01-27 21:58:59,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:58:59,847 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:58:59,864 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2023-01-27 21:58:59,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:58:59,873 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:58:59,874 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:58:59,878 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:58:59,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59 WrapperNode [2023-01-27 21:58:59,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:58:59,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:58:59,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:58:59,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:58:59,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,910 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 358 [2023-01-27 21:58:59,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:58:59,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:58:59,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:58:59,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:58:59,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:58:59,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:58:59,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:58:59,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:58:59,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (1/1) ... [2023-01-27 21:58:59,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:58:59,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:58:59,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 21:58:59,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 21:59:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:59:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:59:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:59:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:59:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:59:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:59:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:59:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:59:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:59:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:59:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:59:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:59:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:59:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:59:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:59:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 21:59:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:59:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:59:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:59:00,016 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:59:00,094 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:59:00,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:59:00,467 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:59:00,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:59:00,693 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-27 21:59:00,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:59:00 BoogieIcfgContainer [2023-01-27 21:59:00,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:59:00,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:59:00,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:59:00,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:59:00,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:58:59" (1/3) ... [2023-01-27 21:59:00,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347b35bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:59:00, skipping insertion in model container [2023-01-27 21:59:00,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:58:59" (2/3) ... [2023-01-27 21:59:00,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347b35bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:59:00, skipping insertion in model container [2023-01-27 21:59:00,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:59:00" (3/3) ... [2023-01-27 21:59:00,699 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-01-27 21:59:00,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:59:00,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:59:00,711 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:59:00,775 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 21:59:00,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 253 transitions, 538 flow [2023-01-27 21:59:00,889 INFO L130 PetriNetUnfolder]: 22/249 cut-off events. [2023-01-27 21:59:00,889 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:59:00,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 249 events. 22/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 140 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-01-27 21:59:00,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 253 transitions, 538 flow [2023-01-27 21:59:00,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 237 transitions, 498 flow [2023-01-27 21:59:00,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:59:00,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 237 transitions, 498 flow [2023-01-27 21:59:00,916 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 237 transitions, 498 flow [2023-01-27 21:59:00,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 237 transitions, 498 flow [2023-01-27 21:59:00,963 INFO L130 PetriNetUnfolder]: 22/237 cut-off events. [2023-01-27 21:59:00,963 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:59:00,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 237 events. 22/237 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 139 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-01-27 21:59:00,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 2000 [2023-01-27 21:59:07,882 INFO L134 LiptonReduction]: Checked pairs total: 4059 [2023-01-27 21:59:07,883 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-01-27 21:59:07,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:59:07,933 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@254558d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:59:07,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 21:59:07,940 INFO L130 PetriNetUnfolder]: 7/38 cut-off events. [2023-01-27 21:59:07,940 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:59:07,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:07,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:07,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:07,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -823670804, now seen corresponding path program 1 times [2023-01-27 21:59:07,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:07,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242583380] [2023-01-27 21:59:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:07,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:59:08,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242583380] [2023-01-27 21:59:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242583380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:08,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:08,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 21:59:08,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58313674] [2023-01-27 21:59:08,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:08,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:59:08,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:59:08,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:59:08,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 489 [2023-01-27 21:59:08,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:08,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:08,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 489 [2023-01-27 21:59:08,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:08,757 INFO L130 PetriNetUnfolder]: 2607/3584 cut-off events. [2023-01-27 21:59:08,758 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2023-01-27 21:59:08,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7119 conditions, 3584 events. 2607/3584 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 16023 event pairs, 498 based on Foata normal form. 1/2296 useless extension candidates. Maximal degree in co-relation 5886. Up to 2275 conditions per place. [2023-01-27 21:59:08,775 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 49 selfloop transitions, 3 changer transitions 1/59 dead transitions. [2023-01-27 21:59:08,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 263 flow [2023-01-27 21:59:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:59:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:59:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2023-01-27 21:59:08,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887525562372188 [2023-01-27 21:59:08,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2023-01-27 21:59:08,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2023-01-27 21:59:08,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:08,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2023-01-27 21:59:08,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:08,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:08,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:08,798 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 102 flow. Second operand 3 states and 717 transitions. [2023-01-27 21:59:08,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 263 flow [2023-01-27 21:59:08,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:59:08,803 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 105 flow [2023-01-27 21:59:08,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-01-27 21:59:08,806 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-01-27 21:59:08,807 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 105 flow [2023-01-27 21:59:08,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:08,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:08,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:08,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:59:08,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:08,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash 723466093, now seen corresponding path program 1 times [2023-01-27 21:59:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106704120] [2023-01-27 21:59:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:59:08,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:08,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106704120] [2023-01-27 21:59:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106704120] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:08,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:08,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:59:08,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87015912] [2023-01-27 21:59:08,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:08,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:59:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:59:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:59:08,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-27 21:59:08,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:08,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:08,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-27 21:59:08,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:09,230 INFO L130 PetriNetUnfolder]: 3844/5077 cut-off events. [2023-01-27 21:59:09,230 INFO L131 PetriNetUnfolder]: For 756/756 co-relation queries the response was YES. [2023-01-27 21:59:09,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11208 conditions, 5077 events. 3844/5077 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22753 event pairs, 982 based on Foata normal form. 120/4244 useless extension candidates. Maximal degree in co-relation 4019. Up to 3577 conditions per place. [2023-01-27 21:59:09,250 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 60 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-01-27 21:59:09,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 66 transitions, 293 flow [2023-01-27 21:59:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:59:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:59:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-01-27 21:59:09,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48466257668711654 [2023-01-27 21:59:09,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-01-27 21:59:09,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-01-27 21:59:09,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:09,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-01-27 21:59:09,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,257 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 105 flow. Second operand 3 states and 711 transitions. [2023-01-27 21:59:09,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 66 transitions, 293 flow [2023-01-27 21:59:09,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:09,258 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 116 flow [2023-01-27 21:59:09,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-01-27 21:59:09,259 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-01-27 21:59:09,259 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 116 flow [2023-01-27 21:59:09,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:09,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:09,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:59:09,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:09,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash -885024255, now seen corresponding path program 1 times [2023-01-27 21:59:09,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022935660] [2023-01-27 21:59:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:09,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:59:09,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022935660] [2023-01-27 21:59:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022935660] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:09,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:09,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:59:09,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126678020] [2023-01-27 21:59:09,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:09,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:59:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:09,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:59:09,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:59:09,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-27 21:59:09,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:09,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-27 21:59:09,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:09,655 INFO L130 PetriNetUnfolder]: 3601/4881 cut-off events. [2023-01-27 21:59:09,656 INFO L131 PetriNetUnfolder]: For 1832/1832 co-relation queries the response was YES. [2023-01-27 21:59:09,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11395 conditions, 4881 events. 3601/4881 cut-off events. For 1832/1832 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 23217 event pairs, 937 based on Foata normal form. 106/4546 useless extension candidates. Maximal degree in co-relation 8167. Up to 3548 conditions per place. [2023-01-27 21:59:09,671 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 60 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-01-27 21:59:09,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 66 transitions, 309 flow [2023-01-27 21:59:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:59:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:59:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-01-27 21:59:09,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4832992501704158 [2023-01-27 21:59:09,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-01-27 21:59:09,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-01-27 21:59:09,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:09,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-01-27 21:59:09,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,677 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 116 flow. Second operand 3 states and 709 transitions. [2023-01-27 21:59:09,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 66 transitions, 309 flow [2023-01-27 21:59:09,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 66 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:09,679 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 128 flow [2023-01-27 21:59:09,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-01-27 21:59:09,680 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-01-27 21:59:09,680 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 128 flow [2023-01-27 21:59:09,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:09,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:09,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:59:09,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:09,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:09,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1988951730, now seen corresponding path program 1 times [2023-01-27 21:59:09,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:09,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032066377] [2023-01-27 21:59:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:09,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:09,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032066377] [2023-01-27 21:59:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032066377] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:09,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:09,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:59:09,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943901973] [2023-01-27 21:59:09,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:09,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:59:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:59:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:59:09,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-27 21:59:09,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:09,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:09,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-27 21:59:09,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:10,153 INFO L130 PetriNetUnfolder]: 3191/4597 cut-off events. [2023-01-27 21:59:10,154 INFO L131 PetriNetUnfolder]: For 2513/2513 co-relation queries the response was YES. [2023-01-27 21:59:10,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11225 conditions, 4597 events. 3191/4597 cut-off events. For 2513/2513 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24355 event pairs, 2374 based on Foata normal form. 95/4561 useless extension candidates. Maximal degree in co-relation 5018. Up to 3497 conditions per place. [2023-01-27 21:59:10,170 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 65 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-01-27 21:59:10,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 349 flow [2023-01-27 21:59:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:59:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:59:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 811 transitions. [2023-01-27 21:59:10,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41462167689161555 [2023-01-27 21:59:10,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 811 transitions. [2023-01-27 21:59:10,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 811 transitions. [2023-01-27 21:59:10,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:10,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 811 transitions. [2023-01-27 21:59:10,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,182 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 128 flow. Second operand 4 states and 811 transitions. [2023-01-27 21:59:10,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 349 flow [2023-01-27 21:59:10,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:10,184 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 146 flow [2023-01-27 21:59:10,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-01-27 21:59:10,185 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-01-27 21:59:10,186 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 146 flow [2023-01-27 21:59:10,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:10,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:10,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:59:10,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:10,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:10,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1525607470, now seen corresponding path program 1 times [2023-01-27 21:59:10,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:10,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383800975] [2023-01-27 21:59:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:10,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383800975] [2023-01-27 21:59:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383800975] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:10,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:10,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:59:10,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757714170] [2023-01-27 21:59:10,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:10,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:59:10,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:10,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:59:10,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:59:10,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-27 21:59:10,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:10,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-27 21:59:10,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:10,688 INFO L130 PetriNetUnfolder]: 3933/5811 cut-off events. [2023-01-27 21:59:10,688 INFO L131 PetriNetUnfolder]: For 3196/3196 co-relation queries the response was YES. [2023-01-27 21:59:10,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13895 conditions, 5811 events. 3933/5811 cut-off events. For 3196/3196 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33531 event pairs, 3012 based on Foata normal form. 166/5823 useless extension candidates. Maximal degree in co-relation 11262. Up to 4410 conditions per place. [2023-01-27 21:59:10,708 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 64 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-01-27 21:59:10,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 364 flow [2023-01-27 21:59:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:59:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:59:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 809 transitions. [2023-01-27 21:59:10,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41359918200408996 [2023-01-27 21:59:10,710 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 809 transitions. [2023-01-27 21:59:10,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 809 transitions. [2023-01-27 21:59:10,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:10,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 809 transitions. [2023-01-27 21:59:10,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,714 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,714 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 146 flow. Second operand 4 states and 809 transitions. [2023-01-27 21:59:10,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 364 flow [2023-01-27 21:59:10,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 360 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:10,716 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 165 flow [2023-01-27 21:59:10,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-01-27 21:59:10,717 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2023-01-27 21:59:10,717 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 165 flow [2023-01-27 21:59:10,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:10,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:10,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:59:10,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:10,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1648494691, now seen corresponding path program 1 times [2023-01-27 21:59:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:10,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621931169] [2023-01-27 21:59:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:59:10,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621931169] [2023-01-27 21:59:10,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621931169] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:10,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:10,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:10,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670876530] [2023-01-27 21:59:10,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:10,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:10,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:10,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:10,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:10,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-27 21:59:10,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:10,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:10,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-27 21:59:10,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:12,411 INFO L130 PetriNetUnfolder]: 18637/25918 cut-off events. [2023-01-27 21:59:12,411 INFO L131 PetriNetUnfolder]: For 7718/7718 co-relation queries the response was YES. [2023-01-27 21:59:12,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59121 conditions, 25918 events. 18637/25918 cut-off events. For 7718/7718 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 143382 event pairs, 7054 based on Foata normal form. 292/26200 useless extension candidates. Maximal degree in co-relation 41583. Up to 9757 conditions per place. [2023-01-27 21:59:12,484 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 123 selfloop transitions, 7 changer transitions 0/130 dead transitions. [2023-01-27 21:59:12,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 130 transitions, 663 flow [2023-01-27 21:59:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1167 transitions. [2023-01-27 21:59:12,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39775051124744376 [2023-01-27 21:59:12,486 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1167 transitions. [2023-01-27 21:59:12,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1167 transitions. [2023-01-27 21:59:12,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:12,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1167 transitions. [2023-01-27 21:59:12,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:12,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:12,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:12,492 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 165 flow. Second operand 6 states and 1167 transitions. [2023-01-27 21:59:12,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 130 transitions, 663 flow [2023-01-27 21:59:12,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 130 transitions, 658 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:12,497 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 204 flow [2023-01-27 21:59:12,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-01-27 21:59:12,499 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-01-27 21:59:12,499 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 204 flow [2023-01-27 21:59:12,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:12,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:12,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:12,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:59:12,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:12,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:12,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1291535771, now seen corresponding path program 1 times [2023-01-27 21:59:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:12,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546726608] [2023-01-27 21:59:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:12,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:59:12,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:12,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546726608] [2023-01-27 21:59:12,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546726608] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:12,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:12,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:12,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766350686] [2023-01-27 21:59:12,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:12,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:12,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:12,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-27 21:59:12,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:12,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:12,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-27 21:59:12,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:14,404 INFO L130 PetriNetUnfolder]: 17505/24308 cut-off events. [2023-01-27 21:59:14,405 INFO L131 PetriNetUnfolder]: For 10699/10699 co-relation queries the response was YES. [2023-01-27 21:59:14,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58510 conditions, 24308 events. 17505/24308 cut-off events. For 10699/10699 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 132591 event pairs, 8084 based on Foata normal form. 192/24496 useless extension candidates. Maximal degree in co-relation 43832. Up to 11795 conditions per place. [2023-01-27 21:59:14,470 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 75 selfloop transitions, 5 changer transitions 37/117 dead transitions. [2023-01-27 21:59:14,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 117 transitions, 624 flow [2023-01-27 21:59:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1156 transitions. [2023-01-27 21:59:14,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3940013633265167 [2023-01-27 21:59:14,473 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1156 transitions. [2023-01-27 21:59:14,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1156 transitions. [2023-01-27 21:59:14,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:14,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1156 transitions. [2023-01-27 21:59:14,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:14,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:14,480 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:14,480 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 204 flow. Second operand 6 states and 1156 transitions. [2023-01-27 21:59:14,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 117 transitions, 624 flow [2023-01-27 21:59:14,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 117 transitions, 619 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:14,487 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 211 flow [2023-01-27 21:59:14,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-01-27 21:59:14,488 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-01-27 21:59:14,488 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 211 flow [2023-01-27 21:59:14,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:14,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:14,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:14,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 21:59:14,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:14,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash 838533375, now seen corresponding path program 1 times [2023-01-27 21:59:14,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:14,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568850412] [2023-01-27 21:59:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:14,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:59:14,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:14,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568850412] [2023-01-27 21:59:14,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568850412] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:14,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:14,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438517218] [2023-01-27 21:59:14,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:14,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:14,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:14,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:14,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:14,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-27 21:59:14,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:14,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:14,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-27 21:59:14,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:16,086 INFO L130 PetriNetUnfolder]: 15039/20526 cut-off events. [2023-01-27 21:59:16,086 INFO L131 PetriNetUnfolder]: For 12445/12445 co-relation queries the response was YES. [2023-01-27 21:59:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53424 conditions, 20526 events. 15039/20526 cut-off events. For 12445/12445 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 102850 event pairs, 3884 based on Foata normal form. 1176/21698 useless extension candidates. Maximal degree in co-relation 41946. Up to 9784 conditions per place. [2023-01-27 21:59:16,277 INFO L137 encePairwiseOnDemand]: 481/489 looper letters, 104 selfloop transitions, 9 changer transitions 11/124 dead transitions. [2023-01-27 21:59:16,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 721 flow [2023-01-27 21:59:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:59:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:59:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1302 transitions. [2023-01-27 21:59:16,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803680981595092 [2023-01-27 21:59:16,280 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1302 transitions. [2023-01-27 21:59:16,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1302 transitions. [2023-01-27 21:59:16,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:16,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1302 transitions. [2023-01-27 21:59:16,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:16,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:16,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:16,286 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 211 flow. Second operand 7 states and 1302 transitions. [2023-01-27 21:59:16,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 721 flow [2023-01-27 21:59:16,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 689 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-01-27 21:59:16,293 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 255 flow [2023-01-27 21:59:16,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-01-27 21:59:16,294 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2023-01-27 21:59:16,294 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 255 flow [2023-01-27 21:59:16,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:16,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:16,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:16,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 21:59:16,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:16,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 941635635, now seen corresponding path program 1 times [2023-01-27 21:59:16,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:16,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715018112] [2023-01-27 21:59:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:59:16,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715018112] [2023-01-27 21:59:16,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715018112] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:16,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:16,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938647811] [2023-01-27 21:59:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:16,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:16,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-27 21:59:16,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:16,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:16,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-27 21:59:16,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:17,260 INFO L130 PetriNetUnfolder]: 9753/13044 cut-off events. [2023-01-27 21:59:17,260 INFO L131 PetriNetUnfolder]: For 13624/13624 co-relation queries the response was YES. [2023-01-27 21:59:17,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37960 conditions, 13044 events. 9753/13044 cut-off events. For 13624/13624 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 62178 event pairs, 826 based on Foata normal form. 548/13590 useless extension candidates. Maximal degree in co-relation 32637. Up to 7564 conditions per place. [2023-01-27 21:59:17,325 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 103 selfloop transitions, 5 changer transitions 1/109 dead transitions. [2023-01-27 21:59:17,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 723 flow [2023-01-27 21:59:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1129 transitions. [2023-01-27 21:59:17,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38479890933878663 [2023-01-27 21:59:17,328 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1129 transitions. [2023-01-27 21:59:17,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1129 transitions. [2023-01-27 21:59:17,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:17,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1129 transitions. [2023-01-27 21:59:17,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:17,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:17,333 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:17,333 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 255 flow. Second operand 6 states and 1129 transitions. [2023-01-27 21:59:17,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 723 flow [2023-01-27 21:59:17,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 706 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-27 21:59:17,343 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 252 flow [2023-01-27 21:59:17,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2023-01-27 21:59:17,344 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-01-27 21:59:17,344 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 252 flow [2023-01-27 21:59:17,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:17,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:17,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:17,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 21:59:17,345 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:17,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:17,345 INFO L85 PathProgramCache]: Analyzing trace with hash 860652039, now seen corresponding path program 1 times [2023-01-27 21:59:17,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:17,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236626418] [2023-01-27 21:59:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:17,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 21:59:17,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:17,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236626418] [2023-01-27 21:59:17,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236626418] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:17,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:17,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:17,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300236034] [2023-01-27 21:59:17,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:17,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:17,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:17,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:17,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:17,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-27 21:59:17,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:17,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:17,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-27 21:59:17,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:18,657 INFO L130 PetriNetUnfolder]: 10068/13334 cut-off events. [2023-01-27 21:59:18,658 INFO L131 PetriNetUnfolder]: For 16560/16560 co-relation queries the response was YES. [2023-01-27 21:59:18,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40538 conditions, 13334 events. 10068/13334 cut-off events. For 16560/16560 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 60391 event pairs, 1721 based on Foata normal form. 608/13941 useless extension candidates. Maximal degree in co-relation 40504. Up to 8566 conditions per place. [2023-01-27 21:59:18,711 INFO L137 encePairwiseOnDemand]: 481/489 looper letters, 125 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2023-01-27 21:59:18,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 134 transitions, 907 flow [2023-01-27 21:59:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:59:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:59:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1292 transitions. [2023-01-27 21:59:18,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37744668419515043 [2023-01-27 21:59:18,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1292 transitions. [2023-01-27 21:59:18,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1292 transitions. [2023-01-27 21:59:18,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:18,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1292 transitions. [2023-01-27 21:59:18,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.57142857142858) internal successors, (1292), 7 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:18,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:18,724 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:18,724 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 252 flow. Second operand 7 states and 1292 transitions. [2023-01-27 21:59:18,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 134 transitions, 907 flow [2023-01-27 21:59:18,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 134 transitions, 884 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-01-27 21:59:18,734 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 309 flow [2023-01-27 21:59:18,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2023-01-27 21:59:18,735 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2023-01-27 21:59:18,736 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 309 flow [2023-01-27 21:59:18,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:18,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:18,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:18,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 21:59:18,737 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:18,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash -90881913, now seen corresponding path program 1 times [2023-01-27 21:59:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964452523] [2023-01-27 21:59:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:59:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964452523] [2023-01-27 21:59:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964452523] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500361703] [2023-01-27 21:59:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:18,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:18,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:18,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:59:18,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 21:59:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:19,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 21:59:19,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:59:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:59:19,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:59:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500361703] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:19,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:59:19,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-01-27 21:59:19,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577443684] [2023-01-27 21:59:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:59:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:59:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:59:19,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 489 [2023-01-27 21:59:19,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:19,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:19,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 489 [2023-01-27 21:59:19,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:20,707 INFO L130 PetriNetUnfolder]: 12987/16821 cut-off events. [2023-01-27 21:59:20,708 INFO L131 PetriNetUnfolder]: For 35922/37169 co-relation queries the response was YES. [2023-01-27 21:59:20,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59886 conditions, 16821 events. 12987/16821 cut-off events. For 35922/37169 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 83272 event pairs, 1905 based on Foata normal form. 949/17735 useless extension candidates. Maximal degree in co-relation 59851. Up to 5781 conditions per place. [2023-01-27 21:59:20,795 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 121 selfloop transitions, 18 changer transitions 0/145 dead transitions. [2023-01-27 21:59:20,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 145 transitions, 1015 flow [2023-01-27 21:59:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1384 transitions. [2023-01-27 21:59:20,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47171097477845947 [2023-01-27 21:59:20,799 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1384 transitions. [2023-01-27 21:59:20,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1384 transitions. [2023-01-27 21:59:20,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:20,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1384 transitions. [2023-01-27 21:59:20,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:20,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:20,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:20,805 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 309 flow. Second operand 6 states and 1384 transitions. [2023-01-27 21:59:20,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 145 transitions, 1015 flow [2023-01-27 21:59:20,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 1001 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 21:59:20,838 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 463 flow [2023-01-27 21:59:20,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-01-27 21:59:20,838 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2023-01-27 21:59:20,838 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 463 flow [2023-01-27 21:59:20,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:20,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:20,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:20,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 21:59:21,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-27 21:59:21,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:21,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:21,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1489168185, now seen corresponding path program 2 times [2023-01-27 21:59:21,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:21,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004125582] [2023-01-27 21:59:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:21,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 21:59:21,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:21,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004125582] [2023-01-27 21:59:21,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004125582] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:21,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164405340] [2023-01-27 21:59:21,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:59:21,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:21,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:21,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:59:21,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 21:59:21,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:59:21,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:59:21,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 21:59:21,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:59:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 21:59:21,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:59:21,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164405340] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:21,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:59:21,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-27 21:59:21,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411561666] [2023-01-27 21:59:21,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:21,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:59:21,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:21,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:59:21,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:59:21,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 489 [2023-01-27 21:59:21,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:21,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:21,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 489 [2023-01-27 21:59:21,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:24,582 INFO L130 PetriNetUnfolder]: 28667/38348 cut-off events. [2023-01-27 21:59:24,583 INFO L131 PetriNetUnfolder]: For 121070/124102 co-relation queries the response was YES. [2023-01-27 21:59:24,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145761 conditions, 38348 events. 28667/38348 cut-off events. For 121070/124102 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 217757 event pairs, 3648 based on Foata normal form. 2901/40778 useless extension candidates. Maximal degree in co-relation 145722. Up to 12111 conditions per place. [2023-01-27 21:59:24,794 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 149 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2023-01-27 21:59:24,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 178 transitions, 1496 flow [2023-01-27 21:59:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1386 transitions. [2023-01-27 21:59:24,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723926380368098 [2023-01-27 21:59:24,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1386 transitions. [2023-01-27 21:59:24,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1386 transitions. [2023-01-27 21:59:24,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:24,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1386 transitions. [2023-01-27 21:59:24,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:24,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:24,803 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:24,804 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 463 flow. Second operand 6 states and 1386 transitions. [2023-01-27 21:59:24,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 178 transitions, 1496 flow [2023-01-27 21:59:24,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 1487 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:24,896 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 623 flow [2023-01-27 21:59:24,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2023-01-27 21:59:24,897 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2023-01-27 21:59:24,897 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 623 flow [2023-01-27 21:59:24,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:24,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:24,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:24,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 21:59:25,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-27 21:59:25,102 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:25,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:25,103 INFO L85 PathProgramCache]: Analyzing trace with hash 105624180, now seen corresponding path program 1 times [2023-01-27 21:59:25,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:25,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244560203] [2023-01-27 21:59:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:25,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:27,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:27,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244560203] [2023-01-27 21:59:27,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244560203] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:27,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771311850] [2023-01-27 21:59:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:27,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:27,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:27,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:59:27,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 21:59:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:27,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 80 conjunts are in the unsatisfiable core [2023-01-27 21:59:27,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:59:28,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:59:28,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:59:28,312 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:59:28,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2023-01-27 21:59:28,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:59:28,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:59:28,520 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:59:28,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2023-01-27 21:59:28,996 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:59:28,997 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:59:29,007 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-27 21:59:29,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2023-01-27 21:59:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:29,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:59:29,570 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_back~0) (<= c_~n1~0 c_~q1_front~0) (< c_~q1_front~0 0) (< c_~q1_back~0 0) (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0) (let ((.cse1 (+ c_~f~0.offset (* c_~i~0 4))) (.cse3 (+ (* c_~q1_back~0 4) c_~q1~0.offset)) (.cse4 (+ (* c_~q1_front~0 4) c_~q1~0.offset)) (.cse5 (+ c_~q2~0.offset (* c_~q2_front~0 4)))) (and (forall ((v_ArrVal_568 (Array Int Int)) (~q1~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_568))) (let ((.cse2 (select .cse0 ~q1~0.base))) (or (not (= (select (select .cse0 c_~f~0.base) .cse1) (select .cse2 .cse3))) (< 0 (+ (select .cse2 .cse4) (select (select .cse0 c_~q2~0.base) .cse5) c_~total~0 1)))))) (forall ((v_ArrVal_568 (Array Int Int)) (~q1~0.base Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_568))) (let ((.cse7 (select .cse6 ~q1~0.base))) (or (not (= (select (select .cse6 c_~f~0.base) .cse1) (select .cse7 .cse3))) (<= (+ (select .cse7 .cse4) (select (select .cse6 c_~q2~0.base) .cse5) c_~total~0) 0)))))))) is different from false [2023-01-27 21:59:29,745 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_back~0) (<= c_~n1~0 c_~q1_front~0) (< c_~q1_front~0 0) (let ((.cse1 (+ (* c_~q1_back~0 4) c_~q1~0.offset)) (.cse3 (+ c_~f~0.offset (* c_~i~0 4))) (.cse4 (+ c_~q2~0.offset (* c_~q2_front~0 4))) (.cse5 (+ (* c_~q1_front~0 4) c_~q1~0.offset))) (and (forall ((v_ArrVal_568 (Array Int Int)) (v_ArrVal_567 (Array Int Int)) (~q1~0.base Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_567) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_568))) (let ((.cse0 (select .cse2 ~q1~0.base))) (or (not (= (select .cse0 .cse1) (select (select .cse2 c_~f~0.base) .cse3))) (<= (+ (select (select .cse2 c_~q2~0.base) .cse4) c_~total~0 (select .cse0 .cse5)) 0))))) (forall ((v_ArrVal_568 (Array Int Int)) (v_ArrVal_567 (Array Int Int)) (~q1~0.base Int)) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_567) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_568))) (let ((.cse6 (select .cse7 ~q1~0.base))) (or (not (= (select .cse6 .cse1) (select (select .cse7 c_~f~0.base) .cse3))) (< 0 (+ (select (select .cse7 c_~q2~0.base) .cse4) c_~total~0 (select .cse6 .cse5) 1)))))))) (< c_~q1_back~0 0) (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0)) is different from false [2023-01-27 21:59:30,164 INFO L321 Elim1Store]: treesize reduction 22, result has 95.1 percent of original size [2023-01-27 21:59:30,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 4096 treesize of output 3932 [2023-01-27 21:59:30,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:59:30,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1513 treesize of output 1506 [2023-01-27 21:59:30,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:59:30,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1417 treesize of output 1314 [2023-01-27 21:59:30,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:59:30,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1225 treesize of output 1122 [2023-01-27 21:59:30,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:59:30,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1033 treesize of output 1026 [2023-01-27 22:10:54,657 WARN L222 SmtUtils]: Spent 13.00s on a formula simplification. DAG size of input: 1428 DAG size of output: 1494 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-27 22:13:21,602 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 22:13:21,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 22:13:21,609 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:13:21,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 22:13:21,609 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:13:21,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:13:21,814 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 71ms.. [2023-01-27 22:13:21,815 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-27 22:13:21,815 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 22:13:21,815 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 22:13:21,815 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-27 22:13:21,816 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:13:21,818 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 22:13:21,818 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 22:13:21,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:13:21 BasicIcfg [2023-01-27 22:13:21,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 22:13:21,820 INFO L158 Benchmark]: Toolchain (without parser) took 862115.03ms. Allocated memory was 551.6MB in the beginning and 6.7GB in the end (delta: 6.2GB). Free memory was 513.4MB in the beginning and 2.1GB in the end (delta: -1.6GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2023-01-27 22:13:21,820 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 385.9MB. Free memory is still 335.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:13:21,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.54ms. Allocated memory is still 551.6MB. Free memory was 513.4MB in the beginning and 500.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 22:13:21,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.56ms. Allocated memory is still 551.6MB. Free memory was 500.3MB in the beginning and 497.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:13:21,821 INFO L158 Benchmark]: Boogie Preprocessor took 44.94ms. Allocated memory is still 551.6MB. Free memory was 497.6MB in the beginning and 495.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:13:21,821 INFO L158 Benchmark]: RCFGBuilder took 738.45ms. Allocated memory is still 551.6MB. Free memory was 495.1MB in the beginning and 509.6MB in the end (delta: -14.5MB). Peak memory consumption was 55.6MB. Max. memory is 16.0GB. [2023-01-27 22:13:21,821 INFO L158 Benchmark]: TraceAbstraction took 861123.77ms. Allocated memory was 551.6MB in the beginning and 6.7GB in the end (delta: 6.2GB). Free memory was 508.5MB in the beginning and 2.1GB in the end (delta: -1.6GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2023-01-27 22:13:21,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 385.9MB. Free memory is still 335.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 173.54ms. Allocated memory is still 551.6MB. Free memory was 513.4MB in the beginning and 500.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.56ms. Allocated memory is still 551.6MB. Free memory was 500.3MB in the beginning and 497.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.94ms. Allocated memory is still 551.6MB. Free memory was 497.6MB in the beginning and 495.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 738.45ms. Allocated memory is still 551.6MB. Free memory was 495.1MB in the beginning and 509.6MB in the end (delta: -14.5MB). Peak memory consumption was 55.6MB. Max. memory is 16.0GB. * TraceAbstraction took 861123.77ms. Allocated memory was 551.6MB in the beginning and 6.7GB in the end (delta: 6.2GB). Free memory was 508.5MB in the beginning and 2.1GB in the end (delta: -1.6GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.0s, 228 PlacesBefore, 45 PlacesAfterwards, 237 TransitionsBefore, 39 TransitionsAfterwards, 2000 CoEnabledTransitionPairs, 8 FixpointIterations, 154 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 32 TrivialYvCompositions, 8 ConcurrentYvCompositions, 15 ChoiceCompositions, 236 TotalNumberOfCompositions, 4059 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2869, independent: 2775, independent conditional: 0, independent unconditional: 2775, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1044, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2869, independent: 1750, independent conditional: 0, independent unconditional: 1750, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 1044, unknown conditional: 0, unknown unconditional: 1044] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 152, Positive conditional cache size: 0, Positive unconditional cache size: 152, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 71ms.. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 71ms.. - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 71ms.. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 71ms.. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 71ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 266 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 861.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 638 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 638 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1688 IncrementalHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 5 mSDtfsCounter, 1688 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=623occurred in iteration=12, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 471 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 1293 SizeOfPredicates, 4 NumberOfNonLiveVariables, 834 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 48/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown