/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-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 02:13:22,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 02:13:22,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 02:13:22,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 02:13:22,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 02:13:22,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 02:13:22,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 02:13:22,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 02:13:22,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 02:13:22,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 02:13:22,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 02:13:22,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 02:13:22,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 02:13:22,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 02:13:22,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 02:13:22,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 02:13:22,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 02:13:22,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 02:13:22,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 02:13:22,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 02:13:22,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 02:13:22,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 02:13:22,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 02:13:22,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 02:13:22,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 02:13:22,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 02:13:22,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 02:13:22,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 02:13:22,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 02:13:22,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 02:13:22,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 02:13:22,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 02:13:22,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 02:13:22,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 02:13:22,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 02:13:22,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 02:13:22,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 02:13:22,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 02:13:22,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 02:13:22,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 02:13:22,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 02:13:22,498 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-RepeatedSemanticLbe.epf [2022-12-06 02:13:22,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 02:13:22,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 02:13:22,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 02:13:22,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 02:13:22,523 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 02:13:22,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 02:13:22,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 02:13:22,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 02:13:22,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 02:13:22,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 02:13:22,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 02:13:22,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 02:13:22,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 02:13:22,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 02:13:22,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 02:13:22,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 02:13:22,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 02:13:22,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 02:13:22,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 02:13:22,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 02:13:22,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 02:13:22,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 02:13:22,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 02:13:22,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 02:13:22,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 02:13:22,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 02:13:22,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 02:13:22,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 02:13:22,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 02:13:22,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 02:13:22,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 02:13:22,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 02:13:22,869 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 02:13:22,869 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 02:13:22,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-12-06 02:13:23,952 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 02:13:24,122 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 02:13:24,122 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-12-06 02:13:24,128 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12ee528e0/54544005c38842cb9022f7ee5c874fd8/FLAG17441182d [2022-12-06 02:13:24,139 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12ee528e0/54544005c38842cb9022f7ee5c874fd8 [2022-12-06 02:13:24,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 02:13:24,142 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 02:13:24,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 02:13:24,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 02:13:24,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 02:13:24,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73673c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24, skipping insertion in model container [2022-12-06 02:13:24,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 02:13:24,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 02:13:24,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:13:24,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:13:24,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:13:24,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:13:24,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:13:24,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:13:24,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:13:24,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:13:24,362 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-12-06 02:13:24,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 02:13:24,376 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 02:13:24,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:13:24,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:13:24,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:13:24,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:13:24,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:13:24,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:13:24,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:13:24,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:13:24,428 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-12-06 02:13:24,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 02:13:24,441 INFO L208 MainTranslator]: Completed translation [2022-12-06 02:13:24,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24 WrapperNode [2022-12-06 02:13:24,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 02:13:24,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 02:13:24,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 02:13:24,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 02:13:24,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,486 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-12-06 02:13:24,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 02:13:24,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 02:13:24,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 02:13:24,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 02:13:24,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,519 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 02:13:24,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 02:13:24,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 02:13:24,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 02:13:24,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (1/1) ... [2022-12-06 02:13:24,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 02:13:24,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:13:24,557 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) [2022-12-06 02:13:24,582 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 [2022-12-06 02:13:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 02:13:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 02:13:24,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 02:13:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 02:13:24,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 02:13:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 02:13:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 02:13:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 02:13:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 02:13:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 02:13:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 02:13:24,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 02:13:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 02:13:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 02:13:24,602 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 02:13:24,713 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 02:13:24,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 02:13:24,945 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 02:13:24,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 02:13:24,963 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-06 02:13:24,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 02:13:24 BoogieIcfgContainer [2022-12-06 02:13:24,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 02:13:24,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 02:13:24,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 02:13:24,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 02:13:24,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 02:13:24" (1/3) ... [2022-12-06 02:13:24,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad09495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 02:13:24, skipping insertion in model container [2022-12-06 02:13:24,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:13:24" (2/3) ... [2022-12-06 02:13:24,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad09495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 02:13:24, skipping insertion in model container [2022-12-06 02:13:24,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 02:13:24" (3/3) ... [2022-12-06 02:13:24,972 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-12-06 02:13:24,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 02:13:24,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 02:13:24,988 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 02:13:25,046 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 02:13:25,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 97 transitions, 210 flow [2022-12-06 02:13:25,121 INFO L130 PetriNetUnfolder]: 8/95 cut-off events. [2022-12-06 02:13:25,121 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 02:13:25,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 8/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-12-06 02:13:25,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 97 transitions, 210 flow [2022-12-06 02:13:25,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 87 transitions, 186 flow [2022-12-06 02:13:25,132 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:25,147 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 87 transitions, 186 flow [2022-12-06 02:13:25,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 186 flow [2022-12-06 02:13:25,172 INFO L130 PetriNetUnfolder]: 8/87 cut-off events. [2022-12-06 02:13:25,173 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 02:13:25,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 8/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-12-06 02:13:25,176 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 87 transitions, 186 flow [2022-12-06 02:13:25,176 INFO L188 LiptonReduction]: Number of co-enabled transitions 728 [2022-12-06 02:13:28,436 INFO L203 LiptonReduction]: Total number of compositions: 74 [2022-12-06 02:13:28,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 02:13:28,455 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=REPEATED_LIPTON_PN, 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;@13d9ba92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 02:13:28,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 02:13:28,459 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-12-06 02:13:28,459 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 02:13:28,459 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:28,460 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:28,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:28,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1885800598, now seen corresponding path program 1 times [2022-12-06 02:13:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:28,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588382513] [2022-12-06 02:13:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:28,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:28,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588382513] [2022-12-06 02:13:28,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588382513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:13:28,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:13:28,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 02:13:28,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935056766] [2022-12-06 02:13:28,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:13:28,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:13:28,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:13:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:13:28,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:13:28,898 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:13:28,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:28,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:13:28,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:13:28,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:13:28,981 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2022-12-06 02:13:28,981 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-06 02:13:28,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 169 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2022-12-06 02:13:28,984 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2022-12-06 02:13:28,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2022-12-06 02:13:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 02:13:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 02:13:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2022-12-06 02:13:28,994 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2022-12-06 02:13:28,999 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2022-12-06 02:13:28,999 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:29,000 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 23 transitions, 113 flow [2022-12-06 02:13:29,006 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 23 transitions, 113 flow [2022-12-06 02:13:29,006 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:13:29,006 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:13:29,009 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 10 [2022-12-06 02:13:29,009 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 23 transitions, 113 flow [2022-12-06 02:13:29,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:29,009 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:29,009 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:29,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 02:13:29,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash -291346094, now seen corresponding path program 1 times [2022-12-06 02:13:29,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:29,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101263116] [2022-12-06 02:13:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:29,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:29,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:29,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101263116] [2022-12-06 02:13:29,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101263116] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:13:29,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:13:29,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:13:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180037812] [2022-12-06 02:13:29,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:13:29,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:13:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:13:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:13:29,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:13:29,208 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:13:29,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 23 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:29,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:13:29,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:13:29,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:13:29,302 INFO L130 PetriNetUnfolder]: 53/103 cut-off events. [2022-12-06 02:13:29,303 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-06 02:13:29,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 103 events. 53/103 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 280 event pairs, 3 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 224. Up to 77 conditions per place. [2022-12-06 02:13:29,305 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 30 selfloop transitions, 4 changer transitions 6/40 dead transitions. [2022-12-06 02:13:29,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 40 transitions, 273 flow [2022-12-06 02:13:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:13:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:13:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2022-12-06 02:13:29,306 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2022-12-06 02:13:29,308 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2022-12-06 02:13:29,308 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:29,308 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 40 transitions, 273 flow [2022-12-06 02:13:29,319 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 40 transitions, 273 flow [2022-12-06 02:13:29,319 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:13:29,320 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:13:29,321 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 13 [2022-12-06 02:13:29,322 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 40 transitions, 273 flow [2022-12-06 02:13:29,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:29,322 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:29,322 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:29,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 02:13:29,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:29,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:29,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2116784192, now seen corresponding path program 2 times [2022-12-06 02:13:29,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:29,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025053376] [2022-12-06 02:13:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:29,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:29,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025053376] [2022-12-06 02:13:29,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025053376] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:13:29,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722618136] [2022-12-06 02:13:29,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 02:13:29,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:29,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:13:29,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 02:13:29,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 02:13:29,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 02:13:29,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 02:13:29,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-06 02:13:29,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:13:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:29,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:13:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:30,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722618136] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 02:13:30,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 02:13:30,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-06 02:13:30,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566716883] [2022-12-06 02:13:30,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 02:13:30,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 02:13:30,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:13:30,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 02:13:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-06 02:13:30,043 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:13:30,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 40 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:30,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:13:30,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:13:30,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:13:30,228 INFO L130 PetriNetUnfolder]: 63/117 cut-off events. [2022-12-06 02:13:30,229 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-06 02:13:30,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 117 events. 63/117 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 311 event pairs, 3 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 344. Up to 91 conditions per place. [2022-12-06 02:13:30,230 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 31 selfloop transitions, 8 changer transitions 6/45 dead transitions. [2022-12-06 02:13:30,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 45 transitions, 393 flow [2022-12-06 02:13:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 02:13:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 02:13:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 44 transitions. [2022-12-06 02:13:30,234 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2022-12-06 02:13:30,235 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 10 predicate places. [2022-12-06 02:13:30,236 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:30,236 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 45 transitions, 393 flow [2022-12-06 02:13:30,239 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 45 transitions, 393 flow [2022-12-06 02:13:30,240 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:13:30,241 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:13:30,242 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 7 [2022-12-06 02:13:30,243 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 45 transitions, 393 flow [2022-12-06 02:13:30,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:30,243 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:30,243 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:30,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 02:13:30,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:30,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:30,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1217645108, now seen corresponding path program 1 times [2022-12-06 02:13:30,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:30,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398243502] [2022-12-06 02:13:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:13:30,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:30,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398243502] [2022-12-06 02:13:30,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398243502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:13:30,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:13:30,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:13:30,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075789644] [2022-12-06 02:13:30,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:13:30,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:13:30,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:13:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:13:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:13:30,608 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:13:30,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 45 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:30,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:13:30,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:13:30,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:13:30,715 INFO L130 PetriNetUnfolder]: 75/149 cut-off events. [2022-12-06 02:13:30,715 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-12-06 02:13:30,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 149 events. 75/149 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 468 event pairs, 0 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 640. Up to 123 conditions per place. [2022-12-06 02:13:30,720 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 49 selfloop transitions, 8 changer transitions 17/74 dead transitions. [2022-12-06 02:13:30,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 74 transitions, 788 flow [2022-12-06 02:13:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 02:13:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 02:13:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2022-12-06 02:13:30,730 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2022-12-06 02:13:30,731 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 14 predicate places. [2022-12-06 02:13:30,732 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:30,732 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 74 transitions, 788 flow [2022-12-06 02:13:30,735 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 74 transitions, 788 flow [2022-12-06 02:13:30,735 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:13:30,736 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:13:30,739 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 8 [2022-12-06 02:13:30,739 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 74 transitions, 788 flow [2022-12-06 02:13:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:30,739 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:30,740 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:30,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 02:13:30,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1127926060, now seen corresponding path program 2 times [2022-12-06 02:13:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:30,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214395949] [2022-12-06 02:13:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:30,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:13:30,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:30,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214395949] [2022-12-06 02:13:30,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214395949] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:13:30,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037749473] [2022-12-06 02:13:30,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 02:13:30,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:30,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:13:30,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 02:13:30,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 02:13:30,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 02:13:30,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 02:13:30,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-06 02:13:30,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:13:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:13:31,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:13:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:13:31,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037749473] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 02:13:31,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 02:13:31,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-06 02:13:31,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97636009] [2022-12-06 02:13:31,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 02:13:31,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 02:13:31,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:13:31,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 02:13:31,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-06 02:13:31,297 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:13:31,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 74 transitions, 788 flow. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:31,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:13:31,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:13:31,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:13:31,435 INFO L130 PetriNetUnfolder]: 93/177 cut-off events. [2022-12-06 02:13:31,436 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-06 02:13:31,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 177 events. 93/177 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 540 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 908. Up to 151 conditions per place. [2022-12-06 02:13:31,438 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 63 selfloop transitions, 17 changer transitions 13/93 dead transitions. [2022-12-06 02:13:31,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 93 transitions, 1164 flow [2022-12-06 02:13:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 02:13:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 02:13:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 40 transitions. [2022-12-06 02:13:31,439 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2022-12-06 02:13:31,440 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 19 predicate places. [2022-12-06 02:13:31,440 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:31,440 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 93 transitions, 1164 flow [2022-12-06 02:13:31,443 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 93 transitions, 1164 flow [2022-12-06 02:13:31,443 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:13:31,444 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:13:31,444 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 4 [2022-12-06 02:13:31,444 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 93 transitions, 1164 flow [2022-12-06 02:13:31,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:31,445 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:31,445 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:31,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 02:13:31,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:31,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1115849798, now seen corresponding path program 1 times [2022-12-06 02:13:31,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:31,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608825796] [2022-12-06 02:13:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:31,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 02:13:32,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:32,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608825796] [2022-12-06 02:13:32,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608825796] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:13:32,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172213796] [2022-12-06 02:13:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:32,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:32,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:13:32,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 02:13:32,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 02:13:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:32,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 02:13:32,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:13:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:33,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:13:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:34,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172213796] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 02:13:34,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 02:13:34,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2022-12-06 02:13:34,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313865774] [2022-12-06 02:13:34,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 02:13:34,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-06 02:13:34,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:13:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-06 02:13:34,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-06 02:13:34,158 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:13:34,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 93 transitions, 1164 flow. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:34,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:13:34,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:13:34,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:13:35,703 INFO L130 PetriNetUnfolder]: 211/405 cut-off events. [2022-12-06 02:13:35,703 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-12-06 02:13:35,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 405 events. 211/405 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1677 event pairs, 0 based on Foata normal form. 2/321 useless extension candidates. Maximal degree in co-relation 2501. Up to 379 conditions per place. [2022-12-06 02:13:35,707 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 130 selfloop transitions, 70 changer transitions 22/222 dead transitions. [2022-12-06 02:13:35,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 222 transitions, 3228 flow [2022-12-06 02:13:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-06 02:13:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-06 02:13:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 122 transitions. [2022-12-06 02:13:35,709 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2022-12-06 02:13:35,710 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 38 predicate places. [2022-12-06 02:13:35,710 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:35,711 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 222 transitions, 3228 flow [2022-12-06 02:13:35,716 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 222 transitions, 3228 flow [2022-12-06 02:13:35,716 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:13:35,717 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:13:35,718 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 8 [2022-12-06 02:13:35,718 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 222 transitions, 3228 flow [2022-12-06 02:13:35,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:35,718 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:35,718 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:35,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 02:13:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:35,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:35,920 INFO L85 PathProgramCache]: Analyzing trace with hash 318020102, now seen corresponding path program 2 times [2022-12-06 02:13:35,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:35,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14541305] [2022-12-06 02:13:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:35,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:13:36,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:36,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14541305] [2022-12-06 02:13:36,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14541305] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:13:36,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372772811] [2022-12-06 02:13:36,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 02:13:36,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:36,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:13:36,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 02:13:36,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 02:13:36,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 02:13:36,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 02:13:36,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 02:13:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:13:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:37,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:13:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:38,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372772811] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 02:13:38,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 02:13:38,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2022-12-06 02:13:38,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36538190] [2022-12-06 02:13:38,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 02:13:38,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-06 02:13:38,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:13:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-06 02:13:38,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-06 02:13:38,658 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:13:38,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 222 transitions, 3228 flow. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:38,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:13:38,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:13:38,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:13:40,643 INFO L130 PetriNetUnfolder]: 307/587 cut-off events. [2022-12-06 02:13:40,643 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-12-06 02:13:40,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 587 events. 307/587 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2708 event pairs, 0 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 4258. Up to 561 conditions per place. [2022-12-06 02:13:40,649 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 217 selfloop transitions, 95 changer transitions 36/348 dead transitions. [2022-12-06 02:13:40,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 348 transitions, 5739 flow [2022-12-06 02:13:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-06 02:13:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-06 02:13:40,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 101 transitions. [2022-12-06 02:13:40,651 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4089068825910931 [2022-12-06 02:13:40,652 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 56 predicate places. [2022-12-06 02:13:40,652 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:40,652 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 348 transitions, 5739 flow [2022-12-06 02:13:40,660 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 348 transitions, 5739 flow [2022-12-06 02:13:40,661 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:13:40,661 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:13:40,662 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 10 [2022-12-06 02:13:40,662 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 348 transitions, 5739 flow [2022-12-06 02:13:40,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:40,663 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:40,663 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:40,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 02:13:40,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:40,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:40,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:40,868 INFO L85 PathProgramCache]: Analyzing trace with hash -368198602, now seen corresponding path program 3 times [2022-12-06 02:13:40,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:40,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076651772] [2022-12-06 02:13:40,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:40,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:13:41,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:41,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076651772] [2022-12-06 02:13:41,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076651772] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:13:41,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418516897] [2022-12-06 02:13:41,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 02:13:41,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:41,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:13:41,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 02:13:41,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 02:13:41,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 02:13:41,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 02:13:41,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 02:13:41,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:13:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:42,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:13:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:43,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418516897] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 02:13:43,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 02:13:43,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2022-12-06 02:13:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541369205] [2022-12-06 02:13:43,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 02:13:43,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 02:13:43,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:13:43,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 02:13:43,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-06 02:13:43,359 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:13:43,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 348 transitions, 5739 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:43,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:13:43,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:13:43,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:13:45,412 INFO L130 PetriNetUnfolder]: 413/791 cut-off events. [2022-12-06 02:13:45,412 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2022-12-06 02:13:45,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 791 events. 413/791 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3982 event pairs, 0 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 6546. Up to 765 conditions per place. [2022-12-06 02:13:45,419 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 245 selfloop transitions, 176 changer transitions 49/470 dead transitions. [2022-12-06 02:13:45,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 470 transitions, 8691 flow [2022-12-06 02:13:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-06 02:13:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-06 02:13:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 106 transitions. [2022-12-06 02:13:45,421 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4291497975708502 [2022-12-06 02:13:45,421 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 74 predicate places. [2022-12-06 02:13:45,422 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:13:45,422 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 470 transitions, 8691 flow [2022-12-06 02:13:45,432 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 470 transitions, 8691 flow [2022-12-06 02:13:45,432 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:13:45,433 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:13:45,434 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 13 [2022-12-06 02:13:45,434 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 470 transitions, 8691 flow [2022-12-06 02:13:45,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:13:45,434 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:13:45,434 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:13:45,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 02:13:45,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:45,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:13:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:13:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash 231662545, now seen corresponding path program 4 times [2022-12-06 02:13:45,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:13:45,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935169939] [2022-12-06 02:13:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:13:45,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:13:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:13:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:45,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:13:45,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935169939] [2022-12-06 02:13:45,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935169939] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:13:45,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502177656] [2022-12-06 02:13:45,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 02:13:45,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:13:45,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:13:45,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 02:13:46,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 02:13:46,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 02:13:46,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 02:13:46,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-06 02:13:46,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:13:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:13:46,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:14:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:14:25,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502177656] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 02:14:25,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 02:14:25,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2022-12-06 02:14:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221198300] [2022-12-06 02:14:25,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 02:14:25,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 02:14:25,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:14:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 02:14:25,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-12-06 02:14:25,652 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 02:14:25,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 470 transitions, 8691 flow. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:14:25,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:14:25,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 02:14:25,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:14:41,745 INFO L130 PetriNetUnfolder]: 1535/2923 cut-off events. [2022-12-06 02:14:41,745 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-12-06 02:14:41,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29552 conditions, 2923 events. 1535/2923 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 19807 event pairs, 0 based on Foata normal form. 0/2205 useless extension candidates. Maximal degree in co-relation 27692. Up to 2897 conditions per place. [2022-12-06 02:14:41,771 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 997 selfloop transitions, 517 changer transitions 217/1731 dead transitions. [2022-12-06 02:14:41,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 1731 transitions, 35511 flow [2022-12-06 02:14:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-06 02:14:41,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2022-12-06 02:14:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 417 transitions. [2022-12-06 02:14:41,781 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39118198874296434 [2022-12-06 02:14:41,782 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 155 predicate places. [2022-12-06 02:14:41,782 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:14:41,782 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 1731 transitions, 35511 flow [2022-12-06 02:14:41,828 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 1731 transitions, 35511 flow [2022-12-06 02:14:41,828 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:14:41,832 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:14:41,833 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 51 [2022-12-06 02:14:41,833 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 1731 transitions, 35511 flow [2022-12-06 02:14:41,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:14:41,834 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:14:41,834 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:14:41,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 02:14:42,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:14:42,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 02:14:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:14:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1465259250, now seen corresponding path program 5 times [2022-12-06 02:14:42,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:14:42,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600155135] [2022-12-06 02:14:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:14:42,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:14:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:14:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:14:42,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:14:42,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600155135] [2022-12-06 02:14:42,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600155135] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:14:42,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070107486] [2022-12-06 02:14:42,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 02:14:42,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:14:42,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:14:42,508 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 02:14:42,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 02:14:42,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 02:14:42,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 02:14:42,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-06 02:14:42,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:14:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:14:43,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:14:43,859 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-12-06 02:14:50,350 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 2880 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2022-12-06 02:27:50,376 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 02:27:50,393 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 [2022-12-06 02:27:51,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-06 02:27:51,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown