/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 18:48:36,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 18:48:36,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 18:48:36,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 18:48:36,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 18:48:36,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 18:48:36,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 18:48:36,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 18:48:36,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 18:48:36,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 18:48:36,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 18:48:36,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 18:48:36,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 18:48:36,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 18:48:36,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 18:48:36,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 18:48:36,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 18:48:36,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 18:48:36,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 18:48:36,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 18:48:36,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 18:48:36,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 18:48:36,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 18:48:36,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 18:48:36,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 18:48:36,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 18:48:36,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 18:48:36,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 18:48:36,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 18:48:36,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 18:48:36,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 18:48:36,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 18:48:36,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 18:48:36,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 18:48:36,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 18:48:36,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 18:48:36,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 18:48:36,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 18:48:36,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 18:48:36,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 18:48:36,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 18:48:36,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 18:48:36,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 18:48:36,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 18:48:36,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 18:48:36,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 18:48:36,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 18:48:36,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 18:48:36,549 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 18:48:36,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 18:48:36,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 18:48:36,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 18:48:36,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 18:48:36,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 18:48:36,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 18:48:36,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 18:48:36,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 18:48:36,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:48:36,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 18:48:36,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 18:48:36,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 18:48:36,552 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 18:48:36,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 18:48:36,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 18:48:36,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 18:48:36,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 18:48:36,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 18:48:36,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 18:48:36,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 18:48:36,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 18:48:36,815 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 18:48:36,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2022-12-11 18:48:37,894 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 18:48:38,166 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 18:48:38,166 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2022-12-11 18:48:38,189 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17714159d/ece3982966b44966859a4c5e83a3016d/FLAG95025ed0d [2022-12-11 18:48:38,208 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17714159d/ece3982966b44966859a4c5e83a3016d [2022-12-11 18:48:38,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 18:48:38,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 18:48:38,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 18:48:38,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 18:48:38,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 18:48:38,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e19b07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38, skipping insertion in model container [2022-12-11 18:48:38,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 18:48:38,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 18:48:38,637 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2022-12-11 18:48:38,643 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2022-12-11 18:48:38,647 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2022-12-11 18:48:38,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:48:38,660 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 18:48:38,707 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2022-12-11 18:48:38,711 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2022-12-11 18:48:38,715 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2022-12-11 18:48:38,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:48:38,764 INFO L208 MainTranslator]: Completed translation [2022-12-11 18:48:38,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38 WrapperNode [2022-12-11 18:48:38,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 18:48:38,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 18:48:38,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 18:48:38,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 18:48:38,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,823 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 241 [2022-12-11 18:48:38,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 18:48:38,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 18:48:38,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 18:48:38,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 18:48:38,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,854 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 18:48:38,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 18:48:38,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 18:48:38,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 18:48:38,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (1/1) ... [2022-12-11 18:48:38,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:48:38,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:48:38,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 18:48:38,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 18:48:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 18:48:38,937 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 18:48:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 18:48:38,938 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 18:48:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 18:48:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 18:48:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 18:48:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 18:48:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-11 18:48:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 18:48:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 18:48:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 18:48:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 18:48:38,940 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 18:48:39,110 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 18:48:39,111 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 18:48:39,411 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 18:48:39,418 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 18:48:39,418 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-11 18:48:39,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:48:39 BoogieIcfgContainer [2022-12-11 18:48:39,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 18:48:39,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 18:48:39,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 18:48:39,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 18:48:39,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 06:48:38" (1/3) ... [2022-12-11 18:48:39,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cb8ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:48:39, skipping insertion in model container [2022-12-11 18:48:39,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:48:38" (2/3) ... [2022-12-11 18:48:39,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cb8ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:48:39, skipping insertion in model container [2022-12-11 18:48:39,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:48:39" (3/3) ... [2022-12-11 18:48:39,425 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-12-11 18:48:39,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 18:48:39,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-11 18:48:39,437 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 18:48:39,539 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 18:48:39,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 256 transitions, 528 flow [2022-12-11 18:48:39,693 INFO L130 PetriNetUnfolder]: 15/254 cut-off events. [2022-12-11 18:48:39,693 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 18:48:39,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 254 events. 15/254 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 363 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2022-12-11 18:48:39,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 256 transitions, 528 flow [2022-12-11 18:48:39,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 245 transitions, 499 flow [2022-12-11 18:48:39,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 18:48:39,722 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;@644421fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 18:48:39,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-11 18:48:39,735 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2022-12-11 18:48:39,735 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 18:48:39,735 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:39,735 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:39,736 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 4 more)] === [2022-12-11 18:48:39,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash 812412170, now seen corresponding path program 1 times [2022-12-11 18:48:39,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:39,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583734640] [2022-12-11 18:48:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:39,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:39,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583734640] [2022-12-11 18:48:39,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583734640] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:39,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:39,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 18:48:39,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154106450] [2022-12-11 18:48:39,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:39,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 18:48:39,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:39,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 18:48:39,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 18:48:39,988 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 256 [2022-12-11 18:48:39,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 245 transitions, 499 flow. Second operand has 2 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:39,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:39,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 256 [2022-12-11 18:48:39,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:40,036 INFO L130 PetriNetUnfolder]: 10/234 cut-off events. [2022-12-11 18:48:40,036 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-12-11 18:48:40,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 234 events. 10/234 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 280 event pairs, 0 based on Foata normal form. 7/229 useless extension candidates. Maximal degree in co-relation 176. Up to 4 conditions per place. [2022-12-11 18:48:40,039 INFO L137 encePairwiseOnDemand]: 251/256 looper letters, 3 selfloop transitions, 0 changer transitions 0/234 dead transitions. [2022-12-11 18:48:40,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 234 transitions, 483 flow [2022-12-11 18:48:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 18:48:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 18:48:40,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 494 transitions. [2022-12-11 18:48:40,049 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.96484375 [2022-12-11 18:48:40,051 INFO L175 Difference]: Start difference. First operand has 237 places, 245 transitions, 499 flow. Second operand 2 states and 494 transitions. [2022-12-11 18:48:40,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 234 transitions, 483 flow [2022-12-11 18:48:40,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 234 transitions, 478 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 18:48:40,058 INFO L231 Difference]: Finished difference. Result has 229 places, 234 transitions, 472 flow [2022-12-11 18:48:40,060 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=472, PETRI_PLACES=229, PETRI_TRANSITIONS=234} [2022-12-11 18:48:40,062 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, -8 predicate places. [2022-12-11 18:48:40,063 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 234 transitions, 472 flow [2022-12-11 18:48:40,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:40,063 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:40,064 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:40,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 18:48:40,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:40,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:40,065 INFO L85 PathProgramCache]: Analyzing trace with hash -510713771, now seen corresponding path program 1 times [2022-12-11 18:48:40,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:40,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933417380] [2022-12-11 18:48:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:40,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:40,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933417380] [2022-12-11 18:48:40,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933417380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:40,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:40,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-11 18:48:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445453614] [2022-12-11 18:48:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:40,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-11 18:48:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-11 18:48:40,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-11 18:48:40,740 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 256 [2022-12-11 18:48:40,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 234 transitions, 472 flow. Second operand has 12 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:40,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:40,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 256 [2022-12-11 18:48:40,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:41,460 INFO L130 PetriNetUnfolder]: 995/3867 cut-off events. [2022-12-11 18:48:41,460 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-11 18:48:41,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5378 conditions, 3867 events. 995/3867 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 31489 event pairs, 789 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 5375. Up to 1435 conditions per place. [2022-12-11 18:48:41,480 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 52 selfloop transitions, 12 changer transitions 0/230 dead transitions. [2022-12-11 18:48:41,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 230 transitions, 592 flow [2022-12-11 18:48:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 18:48:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 18:48:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2392 transitions. [2022-12-11 18:48:41,494 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.71875 [2022-12-11 18:48:41,494 INFO L175 Difference]: Start difference. First operand has 229 places, 234 transitions, 472 flow. Second operand 13 states and 2392 transitions. [2022-12-11 18:48:41,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 230 transitions, 592 flow [2022-12-11 18:48:41,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 230 transitions, 592 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 18:48:41,501 INFO L231 Difference]: Finished difference. Result has 238 places, 230 transitions, 488 flow [2022-12-11 18:48:41,502 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=488, PETRI_PLACES=238, PETRI_TRANSITIONS=230} [2022-12-11 18:48:41,502 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 1 predicate places. [2022-12-11 18:48:41,502 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 230 transitions, 488 flow [2022-12-11 18:48:41,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:41,504 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:41,504 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:41,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 18:48:41,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:41,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash 662506766, now seen corresponding path program 1 times [2022-12-11 18:48:41,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:41,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836032758] [2022-12-11 18:48:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:41,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:41,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836032758] [2022-12-11 18:48:41,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836032758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:41,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:41,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 18:48:41,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432532077] [2022-12-11 18:48:41,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:41,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 18:48:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:41,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 18:48:41,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 18:48:41,601 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 256 [2022-12-11 18:48:41,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 230 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:41,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:41,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 256 [2022-12-11 18:48:41,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:41,647 INFO L130 PetriNetUnfolder]: 26/406 cut-off events. [2022-12-11 18:48:41,647 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 18:48:41,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 406 events. 26/406 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1048 event pairs, 2 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 469. Up to 13 conditions per place. [2022-12-11 18:48:41,649 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 9 selfloop transitions, 5 changer transitions 0/230 dead transitions. [2022-12-11 18:48:41,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 230 transitions, 520 flow [2022-12-11 18:48:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 18:48:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 18:48:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 943 transitions. [2022-12-11 18:48:41,651 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9208984375 [2022-12-11 18:48:41,651 INFO L175 Difference]: Start difference. First operand has 238 places, 230 transitions, 488 flow. Second operand 4 states and 943 transitions. [2022-12-11 18:48:41,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 230 transitions, 520 flow [2022-12-11 18:48:41,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 230 transitions, 497 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-12-11 18:48:41,655 INFO L231 Difference]: Finished difference. Result has 229 places, 228 transitions, 471 flow [2022-12-11 18:48:41,655 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=471, PETRI_PLACES=229, PETRI_TRANSITIONS=228} [2022-12-11 18:48:41,656 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, -8 predicate places. [2022-12-11 18:48:41,656 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 228 transitions, 471 flow [2022-12-11 18:48:41,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:41,657 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:41,657 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:41,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 18:48:41,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:41,658 INFO L85 PathProgramCache]: Analyzing trace with hash 314833467, now seen corresponding path program 1 times [2022-12-11 18:48:41,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:41,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093253465] [2022-12-11 18:48:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:41,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:41,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:41,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093253465] [2022-12-11 18:48:41,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093253465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:41,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:41,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 18:48:41,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828736475] [2022-12-11 18:48:41,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:41,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 18:48:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 18:48:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 18:48:41,816 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 256 [2022-12-11 18:48:41,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 228 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:41,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:41,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 256 [2022-12-11 18:48:41,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:41,870 INFO L130 PetriNetUnfolder]: 33/500 cut-off events. [2022-12-11 18:48:41,870 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-12-11 18:48:41,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 500 events. 33/500 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1232 event pairs, 2 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 555. Up to 23 conditions per place. [2022-12-11 18:48:41,873 INFO L137 encePairwiseOnDemand]: 252/256 looper letters, 10 selfloop transitions, 3 changer transitions 0/232 dead transitions. [2022-12-11 18:48:41,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 232 transitions, 508 flow [2022-12-11 18:48:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 18:48:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 18:48:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2022-12-11 18:48:41,874 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9440104166666666 [2022-12-11 18:48:41,874 INFO L175 Difference]: Start difference. First operand has 229 places, 228 transitions, 471 flow. Second operand 3 states and 725 transitions. [2022-12-11 18:48:41,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 232 transitions, 508 flow [2022-12-11 18:48:41,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 232 transitions, 498 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 18:48:41,877 INFO L231 Difference]: Finished difference. Result has 229 places, 229 transitions, 476 flow [2022-12-11 18:48:41,878 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=229, PETRI_TRANSITIONS=229} [2022-12-11 18:48:41,879 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, -8 predicate places. [2022-12-11 18:48:41,879 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 229 transitions, 476 flow [2022-12-11 18:48:41,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:41,880 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:41,880 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:41,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 18:48:41,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1038158996, now seen corresponding path program 1 times [2022-12-11 18:48:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:41,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716207081] [2022-12-11 18:48:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:41,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:41,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716207081] [2022-12-11 18:48:41,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716207081] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:41,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:41,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 18:48:41,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173498757] [2022-12-11 18:48:41,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:41,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 18:48:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 18:48:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 18:48:41,940 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 256 [2022-12-11 18:48:41,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 229 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:41,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:41,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 256 [2022-12-11 18:48:41,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:42,018 INFO L130 PetriNetUnfolder]: 51/796 cut-off events. [2022-12-11 18:48:42,018 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-11 18:48:42,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 796 events. 51/796 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2910 event pairs, 7 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 900. Up to 27 conditions per place. [2022-12-11 18:48:42,021 INFO L137 encePairwiseOnDemand]: 251/256 looper letters, 15 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2022-12-11 18:48:42,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 237 transitions, 539 flow [2022-12-11 18:48:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 18:48:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 18:48:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1191 transitions. [2022-12-11 18:48:42,023 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.93046875 [2022-12-11 18:48:42,023 INFO L175 Difference]: Start difference. First operand has 229 places, 229 transitions, 476 flow. Second operand 5 states and 1191 transitions. [2022-12-11 18:48:42,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 237 transitions, 539 flow [2022-12-11 18:48:42,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 237 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 18:48:42,026 INFO L231 Difference]: Finished difference. Result has 235 places, 232 transitions, 503 flow [2022-12-11 18:48:42,027 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=235, PETRI_TRANSITIONS=232} [2022-12-11 18:48:42,027 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, -2 predicate places. [2022-12-11 18:48:42,027 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 232 transitions, 503 flow [2022-12-11 18:48:42,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:42,028 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:42,028 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:42,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 18:48:42,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1520880418, now seen corresponding path program 1 times [2022-12-11 18:48:42,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:42,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661019704] [2022-12-11 18:48:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:42,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:43,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:43,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661019704] [2022-12-11 18:48:43,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661019704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:43,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:43,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-11 18:48:43,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926017512] [2022-12-11 18:48:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:43,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-11 18:48:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-11 18:48:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-12-11 18:48:43,006 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 256 [2022-12-11 18:48:43,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 232 transitions, 503 flow. Second operand has 17 states, 17 states have (on average 169.41176470588235) internal successors, (2880), 17 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:43,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:43,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 256 [2022-12-11 18:48:43,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:44,269 INFO L130 PetriNetUnfolder]: 1599/6523 cut-off events. [2022-12-11 18:48:44,269 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-11 18:48:44,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9477 conditions, 6523 events. 1599/6523 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 57129 event pairs, 1290 based on Foata normal form. 0/6172 useless extension candidates. Maximal degree in co-relation 9470. Up to 2556 conditions per place. [2022-12-11 18:48:44,293 INFO L137 encePairwiseOnDemand]: 240/256 looper letters, 79 selfloop transitions, 20 changer transitions 0/254 dead transitions. [2022-12-11 18:48:44,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 254 transitions, 747 flow [2022-12-11 18:48:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-11 18:48:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-11 18:48:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2606 transitions. [2022-12-11 18:48:44,298 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6786458333333333 [2022-12-11 18:48:44,298 INFO L175 Difference]: Start difference. First operand has 235 places, 232 transitions, 503 flow. Second operand 15 states and 2606 transitions. [2022-12-11 18:48:44,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 254 transitions, 747 flow [2022-12-11 18:48:44,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 254 transitions, 747 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 18:48:44,303 INFO L231 Difference]: Finished difference. Result has 255 places, 245 transitions, 610 flow [2022-12-11 18:48:44,303 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=610, PETRI_PLACES=255, PETRI_TRANSITIONS=245} [2022-12-11 18:48:44,305 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 18 predicate places. [2022-12-11 18:48:44,305 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 245 transitions, 610 flow [2022-12-11 18:48:44,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 169.41176470588235) internal successors, (2880), 17 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:44,307 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:44,307 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:44,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 18:48:44,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1493657272, now seen corresponding path program 1 times [2022-12-11 18:48:44,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:44,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966088086] [2022-12-11 18:48:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:44,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:46,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:46,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966088086] [2022-12-11 18:48:46,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966088086] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:46,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:46,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-12-11 18:48:46,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345336734] [2022-12-11 18:48:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:46,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-11 18:48:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-11 18:48:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-12-11 18:48:46,223 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 256 [2022-12-11 18:48:46,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 245 transitions, 610 flow. Second operand has 27 states, 27 states have (on average 155.92592592592592) internal successors, (4210), 27 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:46,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:46,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 256 [2022-12-11 18:48:46,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:48,765 INFO L130 PetriNetUnfolder]: 1457/5896 cut-off events. [2022-12-11 18:48:48,765 INFO L131 PetriNetUnfolder]: For 116/119 co-relation queries the response was YES. [2022-12-11 18:48:48,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8733 conditions, 5896 events. 1457/5896 cut-off events. For 116/119 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 50172 event pairs, 1160 based on Foata normal form. 2/5621 useless extension candidates. Maximal degree in co-relation 8719. Up to 2311 conditions per place. [2022-12-11 18:48:48,800 INFO L137 encePairwiseOnDemand]: 225/256 looper letters, 88 selfloop transitions, 45 changer transitions 0/280 dead transitions. [2022-12-11 18:48:48,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 280 transitions, 970 flow [2022-12-11 18:48:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 18:48:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 18:48:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4292 transitions. [2022-12-11 18:48:48,808 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6209490740740741 [2022-12-11 18:48:48,808 INFO L175 Difference]: Start difference. First operand has 255 places, 245 transitions, 610 flow. Second operand 27 states and 4292 transitions. [2022-12-11 18:48:48,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 280 transitions, 970 flow [2022-12-11 18:48:48,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 280 transitions, 957 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-11 18:48:48,815 INFO L231 Difference]: Finished difference. Result has 286 places, 267 transitions, 836 flow [2022-12-11 18:48:48,816 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=836, PETRI_PLACES=286, PETRI_TRANSITIONS=267} [2022-12-11 18:48:48,817 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 49 predicate places. [2022-12-11 18:48:48,817 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 267 transitions, 836 flow [2022-12-11 18:48:48,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 155.92592592592592) internal successors, (4210), 27 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:48,818 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:48,818 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 18:48:48,818 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1113172931, now seen corresponding path program 1 times [2022-12-11 18:48:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:48,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846566346] [2022-12-11 18:48:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:48,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:49,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:49,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846566346] [2022-12-11 18:48:49,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846566346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:49,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:49,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-11 18:48:49,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657803584] [2022-12-11 18:48:49,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:49,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-11 18:48:49,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-11 18:48:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-12-11 18:48:49,810 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 256 [2022-12-11 18:48:49,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 267 transitions, 836 flow. Second operand has 18 states, 18 states have (on average 160.72222222222223) internal successors, (2893), 18 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:49,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:49,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 256 [2022-12-11 18:48:49,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:51,159 INFO L130 PetriNetUnfolder]: 1555/6362 cut-off events. [2022-12-11 18:48:51,159 INFO L131 PetriNetUnfolder]: For 415/419 co-relation queries the response was YES. [2022-12-11 18:48:51,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 6362 events. 1555/6362 cut-off events. For 415/419 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 56221 event pairs, 723 based on Foata normal form. 3/6030 useless extension candidates. Maximal degree in co-relation 9619. Up to 2403 conditions per place. [2022-12-11 18:48:51,196 INFO L137 encePairwiseOnDemand]: 239/256 looper letters, 96 selfloop transitions, 24 changer transitions 0/274 dead transitions. [2022-12-11 18:48:51,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 274 transitions, 1096 flow [2022-12-11 18:48:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-11 18:48:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-11 18:48:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2467 transitions. [2022-12-11 18:48:51,200 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6424479166666667 [2022-12-11 18:48:51,200 INFO L175 Difference]: Start difference. First operand has 286 places, 267 transitions, 836 flow. Second operand 15 states and 2467 transitions. [2022-12-11 18:48:51,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 274 transitions, 1096 flow [2022-12-11 18:48:51,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 274 transitions, 1048 flow, removed 8 selfloop flow, removed 14 redundant places. [2022-12-11 18:48:51,207 INFO L231 Difference]: Finished difference. Result has 284 places, 264 transitions, 826 flow [2022-12-11 18:48:51,207 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=826, PETRI_PLACES=284, PETRI_TRANSITIONS=264} [2022-12-11 18:48:51,209 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 47 predicate places. [2022-12-11 18:48:51,209 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 264 transitions, 826 flow [2022-12-11 18:48:51,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 160.72222222222223) internal successors, (2893), 18 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:51,210 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:51,210 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:51,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 18:48:51,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:51,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:51,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1021820567, now seen corresponding path program 1 times [2022-12-11 18:48:51,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:51,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453828756] [2022-12-11 18:48:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:51,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:53,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:53,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453828756] [2022-12-11 18:48:53,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453828756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:53,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:53,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-11 18:48:53,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423577894] [2022-12-11 18:48:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:53,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-11 18:48:53,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-11 18:48:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2022-12-11 18:48:53,377 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 256 [2022-12-11 18:48:53,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 264 transitions, 826 flow. Second operand has 28 states, 28 states have (on average 147.14285714285714) internal successors, (4120), 28 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:53,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:53,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 256 [2022-12-11 18:48:53,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:55,957 INFO L130 PetriNetUnfolder]: 782/3101 cut-off events. [2022-12-11 18:48:55,958 INFO L131 PetriNetUnfolder]: For 330/333 co-relation queries the response was YES. [2022-12-11 18:48:55,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 3101 events. 782/3101 cut-off events. For 330/333 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 21604 event pairs, 320 based on Foata normal form. 3/2946 useless extension candidates. Maximal degree in co-relation 4948. Up to 1081 conditions per place. [2022-12-11 18:48:55,979 INFO L137 encePairwiseOnDemand]: 228/256 looper letters, 114 selfloop transitions, 42 changer transitions 0/286 dead transitions. [2022-12-11 18:48:55,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 286 transitions, 1199 flow [2022-12-11 18:48:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 18:48:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 18:48:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3907 transitions. [2022-12-11 18:48:55,986 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5869891826923077 [2022-12-11 18:48:55,986 INFO L175 Difference]: Start difference. First operand has 284 places, 264 transitions, 826 flow. Second operand 26 states and 3907 transitions. [2022-12-11 18:48:55,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 286 transitions, 1199 flow [2022-12-11 18:48:55,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 286 transitions, 1133 flow, removed 1 selfloop flow, removed 21 redundant places. [2022-12-11 18:48:55,991 INFO L231 Difference]: Finished difference. Result has 281 places, 254 transitions, 822 flow [2022-12-11 18:48:55,992 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=822, PETRI_PLACES=281, PETRI_TRANSITIONS=254} [2022-12-11 18:48:55,992 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 44 predicate places. [2022-12-11 18:48:55,992 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 254 transitions, 822 flow [2022-12-11 18:48:55,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 147.14285714285714) internal successors, (4120), 28 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:55,993 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:55,994 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:55,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 18:48:55,994 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:55,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1078226834, now seen corresponding path program 1 times [2022-12-11 18:48:55,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:55,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850582648] [2022-12-11 18:48:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:55,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:56,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:56,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850582648] [2022-12-11 18:48:56,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850582648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:56,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:56,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 18:48:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100458534] [2022-12-11 18:48:56,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:56,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 18:48:56,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:56,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 18:48:56,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 18:48:56,108 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 256 [2022-12-11 18:48:56,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 254 transitions, 822 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:56,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:56,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 256 [2022-12-11 18:48:56,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:48:56,207 INFO L130 PetriNetUnfolder]: 60/836 cut-off events. [2022-12-11 18:48:56,207 INFO L131 PetriNetUnfolder]: For 133/134 co-relation queries the response was YES. [2022-12-11 18:48:56,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 836 events. 60/836 cut-off events. For 133/134 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3247 event pairs, 9 based on Foata normal form. 10/812 useless extension candidates. Maximal degree in co-relation 1189. Up to 39 conditions per place. [2022-12-11 18:48:56,210 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 12 selfloop transitions, 6 changer transitions 0/256 dead transitions. [2022-12-11 18:48:56,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 256 transitions, 865 flow [2022-12-11 18:48:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 18:48:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 18:48:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2022-12-11 18:48:56,212 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.92578125 [2022-12-11 18:48:56,212 INFO L175 Difference]: Start difference. First operand has 281 places, 254 transitions, 822 flow. Second operand 3 states and 711 transitions. [2022-12-11 18:48:56,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 256 transitions, 865 flow [2022-12-11 18:48:56,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 256 transitions, 789 flow, removed 1 selfloop flow, removed 23 redundant places. [2022-12-11 18:48:56,216 INFO L231 Difference]: Finished difference. Result has 260 places, 254 transitions, 758 flow [2022-12-11 18:48:56,216 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=758, PETRI_PLACES=260, PETRI_TRANSITIONS=254} [2022-12-11 18:48:56,217 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 23 predicate places. [2022-12-11 18:48:56,217 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 254 transitions, 758 flow [2022-12-11 18:48:56,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:56,218 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:48:56,218 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:48:56,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-11 18:48:56,218 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:48:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:48:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -119915502, now seen corresponding path program 1 times [2022-12-11 18:48:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:48:56,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154136635] [2022-12-11 18:48:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:48:56,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:48:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:48:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:48:58,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:48:58,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154136635] [2022-12-11 18:48:58,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154136635] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:48:58,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:48:58,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-12-11 18:48:58,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858359493] [2022-12-11 18:48:58,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:48:58,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-11 18:48:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:48:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-11 18:48:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2022-12-11 18:48:58,231 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 256 [2022-12-11 18:48:58,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 254 transitions, 758 flow. Second operand has 29 states, 29 states have (on average 151.68965517241378) internal successors, (4399), 29 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:48:58,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:48:58,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 256 [2022-12-11 18:48:58,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:49:00,995 INFO L130 PetriNetUnfolder]: 467/2124 cut-off events. [2022-12-11 18:49:00,995 INFO L131 PetriNetUnfolder]: For 278/282 co-relation queries the response was YES. [2022-12-11 18:49:01,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3906 conditions, 2124 events. 467/2124 cut-off events. For 278/282 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 12875 event pairs, 57 based on Foata normal form. 0/2039 useless extension candidates. Maximal degree in co-relation 3886. Up to 433 conditions per place. [2022-12-11 18:49:01,006 INFO L137 encePairwiseOnDemand]: 221/256 looper letters, 155 selfloop transitions, 62 changer transitions 0/347 dead transitions. [2022-12-11 18:49:01,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 347 transitions, 1464 flow [2022-12-11 18:49:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-11 18:49:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-11 18:49:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4963 transitions. [2022-12-11 18:49:01,012 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6058349609375 [2022-12-11 18:49:01,012 INFO L175 Difference]: Start difference. First operand has 260 places, 254 transitions, 758 flow. Second operand 32 states and 4963 transitions. [2022-12-11 18:49:01,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 347 transitions, 1464 flow [2022-12-11 18:49:01,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 347 transitions, 1458 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 18:49:01,018 INFO L231 Difference]: Finished difference. Result has 297 places, 277 transitions, 1032 flow [2022-12-11 18:49:01,018 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1032, PETRI_PLACES=297, PETRI_TRANSITIONS=277} [2022-12-11 18:49:01,018 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 60 predicate places. [2022-12-11 18:49:01,018 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 277 transitions, 1032 flow [2022-12-11 18:49:01,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 151.68965517241378) internal successors, (4399), 29 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:49:01,020 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:49:01,020 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:49:01,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 18:49:01,020 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:49:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:49:01,020 INFO L85 PathProgramCache]: Analyzing trace with hash -896580330, now seen corresponding path program 2 times [2022-12-11 18:49:01,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:49:01,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661155853] [2022-12-11 18:49:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:49:01,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:49:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:49:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:49:02,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:49:02,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661155853] [2022-12-11 18:49:02,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661155853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:49:02,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:49:02,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 18:49:02,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370058410] [2022-12-11 18:49:02,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:49:02,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 18:49:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:49:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 18:49:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2022-12-11 18:49:02,639 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 256 [2022-12-11 18:49:02,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 277 transitions, 1032 flow. Second operand has 30 states, 30 states have (on average 157.4) internal successors, (4722), 30 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:49:02,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:49:02,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 256 [2022-12-11 18:49:02,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:49:04,251 INFO L130 PetriNetUnfolder]: 383/1765 cut-off events. [2022-12-11 18:49:04,251 INFO L131 PetriNetUnfolder]: For 710/716 co-relation queries the response was YES. [2022-12-11 18:49:04,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3694 conditions, 1765 events. 383/1765 cut-off events. For 710/716 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9894 event pairs, 42 based on Foata normal form. 6/1714 useless extension candidates. Maximal degree in co-relation 3666. Up to 367 conditions per place. [2022-12-11 18:49:04,259 INFO L137 encePairwiseOnDemand]: 224/256 looper letters, 131 selfloop transitions, 57 changer transitions 0/324 dead transitions. [2022-12-11 18:49:04,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 324 transitions, 1552 flow [2022-12-11 18:49:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 18:49:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 18:49:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4337 transitions. [2022-12-11 18:49:04,264 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6274594907407407 [2022-12-11 18:49:04,264 INFO L175 Difference]: Start difference. First operand has 297 places, 277 transitions, 1032 flow. Second operand 27 states and 4337 transitions. [2022-12-11 18:49:04,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 324 transitions, 1552 flow [2022-12-11 18:49:04,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 324 transitions, 1463 flow, removed 10 selfloop flow, removed 19 redundant places. [2022-12-11 18:49:04,271 INFO L231 Difference]: Finished difference. Result has 308 places, 282 transitions, 1118 flow [2022-12-11 18:49:04,271 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1118, PETRI_PLACES=308, PETRI_TRANSITIONS=282} [2022-12-11 18:49:04,271 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 71 predicate places. [2022-12-11 18:49:04,271 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 282 transitions, 1118 flow [2022-12-11 18:49:04,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.4) internal successors, (4722), 30 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:49:04,273 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:49:04,273 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:49:04,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-11 18:49:04,273 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:49:04,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:49:04,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2063612297, now seen corresponding path program 1 times [2022-12-11 18:49:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:49:04,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541764082] [2022-12-11 18:49:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:49:04,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:49:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:49:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:49:08,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:49:08,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541764082] [2022-12-11 18:49:08,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541764082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:49:08,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:49:08,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-12-11 18:49:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129438922] [2022-12-11 18:49:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:49:08,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-11 18:49:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:49:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-11 18:49:08,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2022-12-11 18:49:08,595 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 256 [2022-12-11 18:49:08,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 282 transitions, 1118 flow. Second operand has 35 states, 35 states have (on average 139.54285714285714) internal successors, (4884), 35 states have internal predecessors, (4884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:49:08,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:49:08,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 256 [2022-12-11 18:49:08,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:49:12,206 INFO L130 PetriNetUnfolder]: 463/2076 cut-off events. [2022-12-11 18:49:12,206 INFO L131 PetriNetUnfolder]: For 1061/1067 co-relation queries the response was YES. [2022-12-11 18:49:12,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 2076 events. 463/2076 cut-off events. For 1061/1067 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12169 event pairs, 52 based on Foata normal form. 0/2008 useless extension candidates. Maximal degree in co-relation 4390. Up to 378 conditions per place. [2022-12-11 18:49:12,220 INFO L137 encePairwiseOnDemand]: 220/256 looper letters, 177 selfloop transitions, 59 changer transitions 0/357 dead transitions. [2022-12-11 18:49:12,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 357 transitions, 1801 flow [2022-12-11 18:49:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-11 18:49:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-11 18:49:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4719 transitions. [2022-12-11 18:49:12,224 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.55859375 [2022-12-11 18:49:12,224 INFO L175 Difference]: Start difference. First operand has 308 places, 282 transitions, 1118 flow. Second operand 33 states and 4719 transitions. [2022-12-11 18:49:12,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 357 transitions, 1801 flow [2022-12-11 18:49:12,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 357 transitions, 1700 flow, removed 8 selfloop flow, removed 21 redundant places. [2022-12-11 18:49:12,237 INFO L231 Difference]: Finished difference. Result has 324 places, 290 transitions, 1189 flow [2022-12-11 18:49:12,237 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1189, PETRI_PLACES=324, PETRI_TRANSITIONS=290} [2022-12-11 18:49:12,238 INFO L295 CegarLoopForPetriNet]: 237 programPoint places, 87 predicate places. [2022-12-11 18:49:12,238 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 290 transitions, 1189 flow [2022-12-11 18:49:12,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 139.54285714285714) internal successors, (4884), 35 states have internal predecessors, (4884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 18:49:12,250 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:49:12,250 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:49:12,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-11 18:49:12,250 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:49:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:49:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1917073816, now seen corresponding path program 1 times [2022-12-11 18:49:12,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:49:12,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488843536] [2022-12-11 18:49:12,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:49:12,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:49:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-12-11 19:00:17,022 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 19:00:17,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-11 19:00:17,059 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-11 19:00:17,066 INFO L158 Benchmark]: Toolchain (without parser) took 698854.89ms. Allocated memory was 194.0MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 168.2MB in the beginning and 404.3MB in the end (delta: -236.1MB). Peak memory consumption was 4.6GB. Max. memory is 8.0GB. [2022-12-11 19:00:17,067 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory was 170.1MB in the beginning and 170.0MB in the end (delta: 91.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 19:00:17,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.00ms. Allocated memory is still 194.0MB. Free memory was 168.2MB in the beginning and 137.8MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-12-11 19:00:17,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.15ms. Allocated memory is still 194.0MB. Free memory was 137.8MB in the beginning and 134.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-11 19:00:17,073 INFO L158 Benchmark]: Boogie Preprocessor took 44.32ms. Allocated memory is still 194.0MB. Free memory was 134.7MB in the beginning and 132.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 19:00:17,073 INFO L158 Benchmark]: RCFGBuilder took 549.89ms. Allocated memory is still 194.0MB. Free memory was 132.6MB in the beginning and 109.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-11 19:00:17,074 INFO L158 Benchmark]: TraceAbstraction took 697643.88ms. Allocated memory was 194.0MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 108.4MB in the beginning and 404.3MB in the end (delta: -295.9MB). Peak memory consumption was 4.6GB. Max. memory is 8.0GB. [2022-12-11 19:00:17,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory was 170.1MB in the beginning and 170.0MB in the end (delta: 91.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 552.00ms. Allocated memory is still 194.0MB. Free memory was 168.2MB in the beginning and 137.8MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.15ms. Allocated memory is still 194.0MB. Free memory was 137.8MB in the beginning and 134.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.32ms. Allocated memory is still 194.0MB. Free memory was 134.7MB in the beginning and 132.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 549.89ms. Allocated memory is still 194.0MB. Free memory was 132.6MB in the beginning and 109.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 697643.88ms. Allocated memory was 194.0MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 108.4MB in the beginning and 404.3MB in the end (delta: -295.9MB). Peak memory consumption was 4.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown