/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:49:52,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:49:52,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:49:52,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:49:52,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:49:52,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:49:52,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:49:52,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:49:52,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:49:52,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:49:52,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:49:52,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:49:52,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:49:52,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:49:52,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:49:52,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:49:52,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:49:52,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:49:52,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:49:52,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:49:52,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:49:52,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:49:52,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:49:52,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:49:52,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:49:52,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:49:52,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:49:52,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:49:52,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:49:52,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:49:52,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:49:52,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:49:52,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:49:52,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:49:52,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:49:52,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:49:52,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:49:52,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:49:52,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:49:52,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:49:52,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:49:52,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 17:49:52,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:49:52,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:49:52,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:49:52,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:49:52,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:49:52,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:49:52,826 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:49:52,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:49:52,826 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:49:52,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:49:52,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:49:52,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:49:52,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:49:52,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:49:52,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:49:52,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:49:52,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:49:52,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:49:52,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:49:52,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:49:52,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:49:52,829 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:49:52,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:49:52,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:49:53,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:49:53,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:49:53,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:49:53,108 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:49:53,108 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:49:53,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2022-12-06 17:49:54,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:49:54,247 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:49:54,247 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2022-12-06 17:49:54,273 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/029f9ea44/35896bcd96624ec886cb3c99aa03ab5d/FLAG81e7d63bc [2022-12-06 17:49:54,285 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/029f9ea44/35896bcd96624ec886cb3c99aa03ab5d [2022-12-06 17:49:54,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:49:54,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:49:54,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:49:54,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:49:54,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:49:54,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0ac434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54, skipping insertion in model container [2022-12-06 17:49:54,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:49:54,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:49:54,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:49:54,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:49:54,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:49:54,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:49:54,409 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/popl20-figure1.wvr.c[1991,2004] [2022-12-06 17:49:54,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:49:54,418 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:49:54,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:49:54,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:49:54,432 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:49:54,432 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:49:54,438 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/popl20-figure1.wvr.c[1991,2004] [2022-12-06 17:49:54,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:49:54,454 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:49:54,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54 WrapperNode [2022-12-06 17:49:54,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:49:54,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:49:54,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:49:54,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:49:54,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,485 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-12-06 17:49:54,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:49:54,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:49:54,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:49:54,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:49:54,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,512 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:49:54,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:49:54,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:49:54,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:49:54,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2022-12-06 17:49:54,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:49:54,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:49:54,555 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 17:49:54,594 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 17:49:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:49:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:49:54,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:49:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:49:54,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:49:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:49:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:49:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:49:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 17:49:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 17:49:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:49:54,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:49:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:49:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:49:54,609 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 17:49:54,713 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:49:54,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:49:54,847 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:49:54,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:49:54,869 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-06 17:49:54,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:49:54 BoogieIcfgContainer [2022-12-06 17:49:54,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:49:54,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:49:54,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:49:54,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:49:54,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:49:54" (1/3) ... [2022-12-06 17:49:54,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242be376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:49:54, skipping insertion in model container [2022-12-06 17:49:54,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (2/3) ... [2022-12-06 17:49:54,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242be376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:49:54, skipping insertion in model container [2022-12-06 17:49:54,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:49:54" (3/3) ... [2022-12-06 17:49:54,876 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2022-12-06 17:49:54,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:49:54,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:49:54,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:49:54,917 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 17:49:54,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 160 flow [2022-12-06 17:49:54,965 INFO L130 PetriNetUnfolder]: 5/70 cut-off events. [2022-12-06 17:49:54,965 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:49:54,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 5/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-12-06 17:49:54,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 72 transitions, 160 flow [2022-12-06 17:49:54,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 62 transitions, 136 flow [2022-12-06 17:49:54,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:49:54,981 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a0e70af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:49:54,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 17:49:54,994 INFO L130 PetriNetUnfolder]: 5/61 cut-off events. [2022-12-06 17:49:54,994 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:49:54,995 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:54,995 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:54,995 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 17:49:54,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:54,999 INFO L85 PathProgramCache]: Analyzing trace with hash -426315025, now seen corresponding path program 1 times [2022-12-06 17:49:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:55,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354997978] [2022-12-06 17:49:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:55,486 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 17:49:55,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:55,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354997978] [2022-12-06 17:49:55,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354997978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:49:55,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:49:55,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:49:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729178481] [2022-12-06 17:49:55,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:49:55,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:49:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:55,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:49:55,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:49:55,545 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 72 [2022-12-06 17:49:55,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 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 17:49:55,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:55,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 72 [2022-12-06 17:49:55,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:55,651 INFO L130 PetriNetUnfolder]: 8/96 cut-off events. [2022-12-06 17:49:55,652 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-06 17:49:55,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 96 events. 8/96 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 1 based on Foata normal form. 14/103 useless extension candidates. Maximal degree in co-relation 56. Up to 18 conditions per place. [2022-12-06 17:49:55,654 INFO L137 encePairwiseOnDemand]: 62/72 looper letters, 11 selfloop transitions, 2 changer transitions 7/67 dead transitions. [2022-12-06 17:49:55,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 195 flow [2022-12-06 17:49:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 17:49:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 17:49:55,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 364 transitions. [2022-12-06 17:49:55,665 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8425925925925926 [2022-12-06 17:49:55,667 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2022-12-06 17:49:55,667 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 195 flow [2022-12-06 17:49:55,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 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 17:49:55,668 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:55,668 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:55,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:49:55,668 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 17:49:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1963407857, now seen corresponding path program 1 times [2022-12-06 17:49:55,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:55,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344578500] [2022-12-06 17:49:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:55,882 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 17:49:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344578500] [2022-12-06 17:49:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344578500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:49:55,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:49:55,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:49:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641279916] [2022-12-06 17:49:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:49:55,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:49:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:49:55,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:49:55,888 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 72 [2022-12-06 17:49:55,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 17:49:55,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:55,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 72 [2022-12-06 17:49:55,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:56,007 INFO L130 PetriNetUnfolder]: 92/275 cut-off events. [2022-12-06 17:49:56,007 INFO L131 PetriNetUnfolder]: For 154/192 co-relation queries the response was YES. [2022-12-06 17:49:56,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 275 events. 92/275 cut-off events. For 154/192 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1170 event pairs, 45 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 428. Up to 109 conditions per place. [2022-12-06 17:49:56,010 INFO L137 encePairwiseOnDemand]: 66/72 looper letters, 36 selfloop transitions, 6 changer transitions 8/90 dead transitions. [2022-12-06 17:49:56,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 352 flow [2022-12-06 17:49:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 17:49:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 17:49:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2022-12-06 17:49:56,017 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-12-06 17:49:56,018 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2022-12-06 17:49:56,018 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 90 transitions, 352 flow [2022-12-06 17:49:56,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 17:49:56,018 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:56,018 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:56,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:49:56,019 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 17:49:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1246072007, now seen corresponding path program 2 times [2022-12-06 17:49:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:56,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336292375] [2022-12-06 17:49:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:56,148 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 17:49:56,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:56,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336292375] [2022-12-06 17:49:56,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336292375] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:49:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199250861] [2022-12-06 17:49:56,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:49:56,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:49:56,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:49:56,152 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 17:49:56,153 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 17:49:56,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:49:56,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:49:56,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-06 17:49:56,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:49:56,373 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 17:49:56,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:49:56,414 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 17:49:56,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199250861] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:49:56,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:49:56,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-12-06 17:49:56,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197949234] [2022-12-06 17:49:56,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:49:56,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-06 17:49:56,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:56,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-06 17:49:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-06 17:49:56,417 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 72 [2022-12-06 17:49:56,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 352 flow. Second operand has 9 states, 9 states have (on average 52.44444444444444) internal successors, (472), 9 states have internal predecessors, (472), 0 states have call successors, (0), 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 17:49:56,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:56,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 72 [2022-12-06 17:49:56,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:56,643 INFO L130 PetriNetUnfolder]: 110/317 cut-off events. [2022-12-06 17:49:56,643 INFO L131 PetriNetUnfolder]: For 242/440 co-relation queries the response was YES. [2022-12-06 17:49:56,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 317 events. 110/317 cut-off events. For 242/440 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1428 event pairs, 9 based on Foata normal form. 14/296 useless extension candidates. Maximal degree in co-relation 704. Up to 157 conditions per place. [2022-12-06 17:49:56,651 INFO L137 encePairwiseOnDemand]: 64/72 looper letters, 53 selfloop transitions, 24 changer transitions 10/127 dead transitions. [2022-12-06 17:49:56,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 127 transitions, 696 flow [2022-12-06 17:49:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-06 17:49:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-06 17:49:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 783 transitions. [2022-12-06 17:49:56,656 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-12-06 17:49:56,658 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2022-12-06 17:49:56,658 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 127 transitions, 696 flow [2022-12-06 17:49:56,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 52.44444444444444) internal successors, (472), 9 states have internal predecessors, (472), 0 states have call successors, (0), 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 17:49:56,658 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:56,658 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:56,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 17:49:56,863 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 17:49:56,864 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 17:49:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash 682661007, now seen corresponding path program 3 times [2022-12-06 17:49:56,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:56,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685114137] [2022-12-06 17:49:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:56,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:56,933 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 17:49:56,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:56,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685114137] [2022-12-06 17:49:56,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685114137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:49:56,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:49:56,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:49:56,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959354866] [2022-12-06 17:49:56,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:49:56,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:49:56,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:56,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:49:56,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:49:56,935 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 72 [2022-12-06 17:49:56,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 127 transitions, 696 flow. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 17:49:56,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:56,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 72 [2022-12-06 17:49:56,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:57,042 INFO L130 PetriNetUnfolder]: 125/381 cut-off events. [2022-12-06 17:49:57,043 INFO L131 PetriNetUnfolder]: For 385/480 co-relation queries the response was YES. [2022-12-06 17:49:57,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 381 events. 125/381 cut-off events. For 385/480 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1910 event pairs, 8 based on Foata normal form. 9/352 useless extension candidates. Maximal degree in co-relation 1056. Up to 162 conditions per place. [2022-12-06 17:49:57,046 INFO L137 encePairwiseOnDemand]: 64/72 looper letters, 81 selfloop transitions, 13 changer transitions 22/156 dead transitions. [2022-12-06 17:49:57,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 1120 flow [2022-12-06 17:49:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 17:49:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 17:49:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 355 transitions. [2022-12-06 17:49:57,047 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8217592592592593 [2022-12-06 17:49:57,049 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 27 predicate places. [2022-12-06 17:49:57,049 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 156 transitions, 1120 flow [2022-12-06 17:49:57,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 17:49:57,049 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:57,049 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:57,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:49:57,050 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 17:49:57,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:57,051 INFO L85 PathProgramCache]: Analyzing trace with hash 299447523, now seen corresponding path program 4 times [2022-12-06 17:49:57,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:57,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553658185] [2022-12-06 17:49:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:57,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:57,119 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 17:49:57,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:57,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553658185] [2022-12-06 17:49:57,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553658185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:49:57,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:49:57,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:49:57,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220466612] [2022-12-06 17:49:57,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:49:57,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:49:57,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:57,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:49:57,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:49:57,122 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 72 [2022-12-06 17:49:57,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 156 transitions, 1120 flow. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 17:49:57,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:57,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 72 [2022-12-06 17:49:57,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:57,215 INFO L130 PetriNetUnfolder]: 162/495 cut-off events. [2022-12-06 17:49:57,216 INFO L131 PetriNetUnfolder]: For 747/924 co-relation queries the response was YES. [2022-12-06 17:49:57,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 495 events. 162/495 cut-off events. For 747/924 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2580 event pairs, 6 based on Foata normal form. 5/449 useless extension candidates. Maximal degree in co-relation 1721. Up to 221 conditions per place. [2022-12-06 17:49:57,218 INFO L137 encePairwiseOnDemand]: 65/72 looper letters, 119 selfloop transitions, 19 changer transitions 32/210 dead transitions. [2022-12-06 17:49:57,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 210 transitions, 1943 flow [2022-12-06 17:49:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 17:49:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 17:49:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 342 transitions. [2022-12-06 17:49:57,220 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-12-06 17:49:57,222 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 32 predicate places. [2022-12-06 17:49:57,222 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 210 transitions, 1943 flow [2022-12-06 17:49:57,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 17:49:57,223 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:57,223 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:57,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:49:57,223 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 17:49:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 779564853, now seen corresponding path program 5 times [2022-12-06 17:49:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:57,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507790770] [2022-12-06 17:49:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:57,313 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 17:49:57,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:57,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507790770] [2022-12-06 17:49:57,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507790770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:49:57,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:49:57,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:49:57,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801867796] [2022-12-06 17:49:57,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:49:57,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:49:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:49:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:49:57,316 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 72 [2022-12-06 17:49:57,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 210 transitions, 1943 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 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 17:49:57,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:57,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 72 [2022-12-06 17:49:57,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:57,418 INFO L130 PetriNetUnfolder]: 201/595 cut-off events. [2022-12-06 17:49:57,418 INFO L131 PetriNetUnfolder]: For 1283/1707 co-relation queries the response was YES. [2022-12-06 17:49:57,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 595 events. 201/595 cut-off events. For 1283/1707 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3319 event pairs, 6 based on Foata normal form. 13/554 useless extension candidates. Maximal degree in co-relation 2598. Up to 304 conditions per place. [2022-12-06 17:49:57,422 INFO L137 encePairwiseOnDemand]: 64/72 looper letters, 146 selfloop transitions, 23 changer transitions 30/239 dead transitions. [2022-12-06 17:49:57,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 239 transitions, 2645 flow [2022-12-06 17:49:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 17:49:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 17:49:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 362 transitions. [2022-12-06 17:49:57,423 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8379629629629629 [2022-12-06 17:49:57,425 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 37 predicate places. [2022-12-06 17:49:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 239 transitions, 2645 flow [2022-12-06 17:49:57,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 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 17:49:57,426 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:57,426 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:57,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 17:49:57,426 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 17:49:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash 770501499, now seen corresponding path program 6 times [2022-12-06 17:49:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:57,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073367584] [2022-12-06 17:49:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:57,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:57,498 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 17:49:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:57,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073367584] [2022-12-06 17:49:57,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073367584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:49:57,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:49:57,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:49:57,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145851826] [2022-12-06 17:49:57,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:49:57,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:49:57,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:49:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:49:57,501 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 72 [2022-12-06 17:49:57,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 239 transitions, 2645 flow. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 17:49:57,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:57,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 72 [2022-12-06 17:49:57,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:57,616 INFO L130 PetriNetUnfolder]: 198/598 cut-off events. [2022-12-06 17:49:57,617 INFO L131 PetriNetUnfolder]: For 1697/2115 co-relation queries the response was YES. [2022-12-06 17:49:57,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 598 events. 198/598 cut-off events. For 1697/2115 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3397 event pairs, 4 based on Foata normal form. 8/555 useless extension candidates. Maximal degree in co-relation 2976. Up to 304 conditions per place. [2022-12-06 17:49:57,621 INFO L137 encePairwiseOnDemand]: 64/72 looper letters, 145 selfloop transitions, 22 changer transitions 30/237 dead transitions. [2022-12-06 17:49:57,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 237 transitions, 3005 flow [2022-12-06 17:49:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 17:49:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 17:49:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 300 transitions. [2022-12-06 17:49:57,623 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-12-06 17:49:57,623 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 41 predicate places. [2022-12-06 17:49:57,623 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 237 transitions, 3005 flow [2022-12-06 17:49:57,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 17:49:57,623 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:57,623 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:57,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 17:49:57,624 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 17:49:57,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash 383977925, now seen corresponding path program 7 times [2022-12-06 17:49:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:57,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392778020] [2022-12-06 17:49:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:57,685 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 17:49:57,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:57,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392778020] [2022-12-06 17:49:57,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392778020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:49:57,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:49:57,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:49:57,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410492618] [2022-12-06 17:49:57,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:49:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:49:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:49:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:49:57,687 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 72 [2022-12-06 17:49:57,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 237 transitions, 3005 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 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 17:49:57,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:57,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 72 [2022-12-06 17:49:57,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:57,786 INFO L130 PetriNetUnfolder]: 189/578 cut-off events. [2022-12-06 17:49:57,786 INFO L131 PetriNetUnfolder]: For 2111/2812 co-relation queries the response was YES. [2022-12-06 17:49:57,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3566 conditions, 578 events. 189/578 cut-off events. For 2111/2812 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3252 event pairs, 14 based on Foata normal form. 7/546 useless extension candidates. Maximal degree in co-relation 2923. Up to 290 conditions per place. [2022-12-06 17:49:57,790 INFO L137 encePairwiseOnDemand]: 64/72 looper letters, 130 selfloop transitions, 30 changer transitions 28/228 dead transitions. [2022-12-06 17:49:57,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 228 transitions, 3233 flow [2022-12-06 17:49:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 17:49:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 17:49:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2022-12-06 17:49:57,793 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8240740740740741 [2022-12-06 17:49:57,793 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 46 predicate places. [2022-12-06 17:49:57,793 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 228 transitions, 3233 flow [2022-12-06 17:49:57,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 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 17:49:57,794 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:57,794 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:57,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 17:49:57,794 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 17:49:57,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1732724493, now seen corresponding path program 1 times [2022-12-06 17:49:57,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:57,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305846695] [2022-12-06 17:49:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:57,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:49:57,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:57,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305846695] [2022-12-06 17:49:57,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305846695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:49:57,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436007124] [2022-12-06 17:49:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:57,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:49:57,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:49:57,917 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 17:49:57,918 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 17:49:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:57,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-06 17:49:57,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:49:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:49:58,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:49:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:49:58,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436007124] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:49:58,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:49:58,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-12-06 17:49:58,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100566910] [2022-12-06 17:49:58,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:49:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:49:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:58,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:49:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:49:58,128 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 72 [2022-12-06 17:49:58,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 228 transitions, 3233 flow. Second operand has 6 states, 6 states have (on average 57.833333333333336) internal successors, (347), 6 states have internal predecessors, (347), 0 states have call successors, (0), 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 17:49:58,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:58,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 72 [2022-12-06 17:49:58,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:58,264 INFO L130 PetriNetUnfolder]: 352/1070 cut-off events. [2022-12-06 17:49:58,264 INFO L131 PetriNetUnfolder]: For 5712/6695 co-relation queries the response was YES. [2022-12-06 17:49:58,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 1070 events. 352/1070 cut-off events. For 5712/6695 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7145 event pairs, 45 based on Foata normal form. 14/995 useless extension candidates. Maximal degree in co-relation 5334. Up to 634 conditions per place. [2022-12-06 17:49:58,271 INFO L137 encePairwiseOnDemand]: 65/72 looper letters, 52 selfloop transitions, 31 changer transitions 49/278 dead transitions. [2022-12-06 17:49:58,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 278 transitions, 4306 flow [2022-12-06 17:49:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:49:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:49:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 480 transitions. [2022-12-06 17:49:58,273 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-12-06 17:49:58,274 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 53 predicate places. [2022-12-06 17:49:58,274 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 278 transitions, 4306 flow [2022-12-06 17:49:58,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.833333333333336) internal successors, (347), 6 states have internal predecessors, (347), 0 states have call successors, (0), 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 17:49:58,274 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:58,274 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:58,287 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 17:49:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-06 17:49:58,480 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 17:49:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:58,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1479123843, now seen corresponding path program 2 times [2022-12-06 17:49:58,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:58,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436492545] [2022-12-06 17:49:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:58,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:49:58,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:58,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436492545] [2022-12-06 17:49:58,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436492545] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:49:58,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700975585] [2022-12-06 17:49:58,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:49:58,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:49:58,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:49:58,566 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 17:49:58,568 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 17:49:58,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:49:58,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:49:58,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:49:58,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:49:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:49:58,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:49:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:49:58,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700975585] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:49:58,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:49:58,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-12-06 17:49:58,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3798647] [2022-12-06 17:49:58,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:49:58,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:49:58,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:58,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:49:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:49:58,768 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:49:58,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 278 transitions, 4306 flow. Second operand has 16 states, 16 states have (on average 50.625) internal successors, (810), 16 states have internal predecessors, (810), 0 states have call successors, (0), 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 17:49:58,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:58,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:49:58,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:49:59,300 INFO L130 PetriNetUnfolder]: 575/1507 cut-off events. [2022-12-06 17:49:59,300 INFO L131 PetriNetUnfolder]: For 8712/9819 co-relation queries the response was YES. [2022-12-06 17:49:59,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10931 conditions, 1507 events. 575/1507 cut-off events. For 8712/9819 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9956 event pairs, 27 based on Foata normal form. 33/1420 useless extension candidates. Maximal degree in co-relation 8822. Up to 962 conditions per place. [2022-12-06 17:49:59,311 INFO L137 encePairwiseOnDemand]: 61/72 looper letters, 237 selfloop transitions, 125 changer transitions 86/490 dead transitions. [2022-12-06 17:49:59,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 490 transitions, 8722 flow [2022-12-06 17:49:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-06 17:49:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-06 17:49:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1244 transitions. [2022-12-06 17:49:59,314 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.751207729468599 [2022-12-06 17:49:59,315 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 75 predicate places. [2022-12-06 17:49:59,315 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 490 transitions, 8722 flow [2022-12-06 17:49:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 50.625) internal successors, (810), 16 states have internal predecessors, (810), 0 states have call successors, (0), 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 17:49:59,315 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:49:59,316 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:49:59,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-06 17:49:59,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:49:59,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:49:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:49:59,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1616971657, now seen corresponding path program 3 times [2022-12-06 17:49:59,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:49:59,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694325494] [2022-12-06 17:49:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:49:59,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:49:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:49:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:49:59,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:49:59,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694325494] [2022-12-06 17:49:59,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694325494] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:49:59,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537259674] [2022-12-06 17:49:59,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:49:59,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:49:59,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:49:59,653 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 17:49:59,678 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 17:49:59,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 17:49:59,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:49:59,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:49:59,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:49:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:49:59,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:49:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:49:59,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537259674] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:49:59,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:49:59,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-06 17:49:59,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127897083] [2022-12-06 17:49:59,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:49:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:49:59,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:49:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:49:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:49:59,927 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:49:59,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 490 transitions, 8722 flow. Second operand has 21 states, 21 states have (on average 50.333333333333336) internal successors, (1057), 21 states have internal predecessors, (1057), 0 states have call successors, (0), 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 17:49:59,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:49:59,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:49:59,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:00,364 INFO L130 PetriNetUnfolder]: 622/1822 cut-off events. [2022-12-06 17:50:00,365 INFO L131 PetriNetUnfolder]: For 12680/13231 co-relation queries the response was YES. [2022-12-06 17:50:00,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13993 conditions, 1822 events. 622/1822 cut-off events. For 12680/13231 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13719 event pairs, 23 based on Foata normal form. 35/1730 useless extension candidates. Maximal degree in co-relation 10486. Up to 1099 conditions per place. [2022-12-06 17:50:00,378 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 352 selfloop transitions, 68 changer transitions 130/592 dead transitions. [2022-12-06 17:50:00,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 592 transitions, 11843 flow [2022-12-06 17:50:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-06 17:50:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-06 17:50:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 952 transitions. [2022-12-06 17:50:00,381 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7345679012345679 [2022-12-06 17:50:00,381 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 92 predicate places. [2022-12-06 17:50:00,382 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 592 transitions, 11843 flow [2022-12-06 17:50:00,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.333333333333336) internal successors, (1057), 21 states have internal predecessors, (1057), 0 states have call successors, (0), 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 17:50:00,382 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:00,382 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:00,398 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 17:50:00,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:00,587 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash 862786631, now seen corresponding path program 4 times [2022-12-06 17:50:00,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:00,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211983661] [2022-12-06 17:50:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:00,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:00,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211983661] [2022-12-06 17:50:00,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211983661] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:00,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078447523] [2022-12-06 17:50:00,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:50:00,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:00,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:00,705 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 17:50:00,732 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 17:50:00,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:50:00,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:00,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:00,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:00,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:00,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078447523] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:00,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:00,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-12-06 17:50:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217022952] [2022-12-06 17:50:00,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:00,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 17:50:00,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 17:50:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-12-06 17:50:00,917 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:00,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 592 transitions, 11843 flow. Second operand has 17 states, 17 states have (on average 50.64705882352941) internal successors, (861), 17 states have internal predecessors, (861), 0 states have call successors, (0), 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 17:50:00,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:00,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:00,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:01,864 INFO L130 PetriNetUnfolder]: 870/2549 cut-off events. [2022-12-06 17:50:01,864 INFO L131 PetriNetUnfolder]: For 19733/20525 co-relation queries the response was YES. [2022-12-06 17:50:01,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21181 conditions, 2549 events. 870/2549 cut-off events. For 19733/20525 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20901 event pairs, 25 based on Foata normal form. 78/2440 useless extension candidates. Maximal degree in co-relation 15805. Up to 1548 conditions per place. [2022-12-06 17:50:01,883 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 400 selfloop transitions, 228 changer transitions 189/859 dead transitions. [2022-12-06 17:50:01,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 859 transitions, 18867 flow [2022-12-06 17:50:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-06 17:50:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-06 17:50:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2587 transitions. [2022-12-06 17:50:01,887 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7332766439909297 [2022-12-06 17:50:01,888 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 140 predicate places. [2022-12-06 17:50:01,888 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 859 transitions, 18867 flow [2022-12-06 17:50:01,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 50.64705882352941) internal successors, (861), 17 states have internal predecessors, (861), 0 states have call successors, (0), 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 17:50:01,888 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:01,888 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:01,907 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 17:50:02,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-06 17:50:02,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash 525856459, now seen corresponding path program 5 times [2022-12-06 17:50:02,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:02,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301623179] [2022-12-06 17:50:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:02,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:02,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301623179] [2022-12-06 17:50:02,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301623179] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:02,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169758476] [2022-12-06 17:50:02,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 17:50:02,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:02,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:02,201 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 17:50:02,202 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 17:50:02,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 17:50:02,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:02,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:02,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:02,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:02,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169758476] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:02,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:02,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-06 17:50:02,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958557624] [2022-12-06 17:50:02,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:02,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-06 17:50:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-06 17:50:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-12-06 17:50:02,416 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:02,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 859 transitions, 18867 flow. Second operand has 18 states, 18 states have (on average 50.888888888888886) internal successors, (916), 18 states have internal predecessors, (916), 0 states have call successors, (0), 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 17:50:02,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:02,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:02,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:03,486 INFO L130 PetriNetUnfolder]: 1091/3132 cut-off events. [2022-12-06 17:50:03,486 INFO L131 PetriNetUnfolder]: For 27559/28589 co-relation queries the response was YES. [2022-12-06 17:50:03,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28771 conditions, 3132 events. 1091/3132 cut-off events. For 27559/28589 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 26897 event pairs, 31 based on Foata normal form. 84/3003 useless extension candidates. Maximal degree in co-relation 21456. Up to 1964 conditions per place. [2022-12-06 17:50:03,507 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 528 selfloop transitions, 282 changer transitions 205/1057 dead transitions. [2022-12-06 17:50:03,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1057 transitions, 25427 flow [2022-12-06 17:50:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:50:03,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:50:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1607 transitions. [2022-12-06 17:50:03,510 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7439814814814815 [2022-12-06 17:50:03,511 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 169 predicate places. [2022-12-06 17:50:03,511 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 1057 transitions, 25427 flow [2022-12-06 17:50:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 50.888888888888886) internal successors, (916), 18 states have internal predecessors, (916), 0 states have call successors, (0), 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 17:50:03,511 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:03,511 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:03,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-06 17:50:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:03,716 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash -228294157, now seen corresponding path program 6 times [2022-12-06 17:50:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:03,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097631472] [2022-12-06 17:50:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:03,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:03,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097631472] [2022-12-06 17:50:03,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097631472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:03,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861863828] [2022-12-06 17:50:03,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 17:50:03,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:03,833 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 17:50:03,864 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 17:50:03,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-06 17:50:03,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:03,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:03,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:04,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:04,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861863828] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:04,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:04,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-06 17:50:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121674956] [2022-12-06 17:50:04,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:04,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-06 17:50:04,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:04,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-06 17:50:04,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-12-06 17:50:04,082 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:04,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 1057 transitions, 25427 flow. Second operand has 18 states, 18 states have (on average 50.94444444444444) internal successors, (917), 18 states have internal predecessors, (917), 0 states have call successors, (0), 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 17:50:04,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:04,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:04,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:05,603 INFO L130 PetriNetUnfolder]: 1302/3736 cut-off events. [2022-12-06 17:50:05,603 INFO L131 PetriNetUnfolder]: For 38449/40039 co-relation queries the response was YES. [2022-12-06 17:50:05,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37427 conditions, 3736 events. 1302/3736 cut-off events. For 38449/40039 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 33679 event pairs, 42 based on Foata normal form. 79/3582 useless extension candidates. Maximal degree in co-relation 28965. Up to 2377 conditions per place. [2022-12-06 17:50:05,638 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 606 selfloop transitions, 369 changer transitions 239/1256 dead transitions. [2022-12-06 17:50:05,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1256 transitions, 32925 flow [2022-12-06 17:50:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-06 17:50:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-06 17:50:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2167 transitions. [2022-12-06 17:50:05,641 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7340785907859079 [2022-12-06 17:50:05,642 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 209 predicate places. [2022-12-06 17:50:05,642 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 1256 transitions, 32925 flow [2022-12-06 17:50:05,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 50.94444444444444) internal successors, (917), 18 states have internal predecessors, (917), 0 states have call successors, (0), 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 17:50:05,643 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:05,643 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:05,664 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 17:50:05,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:05,849 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:05,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:05,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1199117399, now seen corresponding path program 7 times [2022-12-06 17:50:05,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:05,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877768983] [2022-12-06 17:50:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:05,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:05,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:05,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877768983] [2022-12-06 17:50:05,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877768983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:05,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591950961] [2022-12-06 17:50:05,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 17:50:05,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:05,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:05,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:05,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 17:50:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:06,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:06,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:06,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:06,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591950961] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:06,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:06,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-12-06 17:50:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861729916] [2022-12-06 17:50:06,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:06,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 17:50:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 17:50:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-12-06 17:50:06,152 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:06,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 1256 transitions, 32925 flow. Second operand has 17 states, 17 states have (on average 50.8235294117647) internal successors, (864), 17 states have internal predecessors, (864), 0 states have call successors, (0), 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 17:50:06,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:06,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:06,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:08,031 INFO L130 PetriNetUnfolder]: 1348/3898 cut-off events. [2022-12-06 17:50:08,031 INFO L131 PetriNetUnfolder]: For 45276/47119 co-relation queries the response was YES. [2022-12-06 17:50:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42252 conditions, 3898 events. 1348/3898 cut-off events. For 45276/47119 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 35621 event pairs, 37 based on Foata normal form. 150/3816 useless extension candidates. Maximal degree in co-relation 30140. Up to 2499 conditions per place. [2022-12-06 17:50:08,063 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 600 selfloop transitions, 409 changer transitions 271/1322 dead transitions. [2022-12-06 17:50:08,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1322 transitions, 37364 flow [2022-12-06 17:50:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-06 17:50:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-12-06 17:50:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 3583 transitions. [2022-12-06 17:50:08,067 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7318218954248366 [2022-12-06 17:50:08,067 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 275 predicate places. [2022-12-06 17:50:08,067 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 1322 transitions, 37364 flow [2022-12-06 17:50:08,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 50.8235294117647) internal successors, (864), 17 states have internal predecessors, (864), 0 states have call successors, (0), 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 17:50:08,068 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:08,068 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:08,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-06 17:50:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-06 17:50:08,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash -282923547, now seen corresponding path program 8 times [2022-12-06 17:50:08,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:08,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817764322] [2022-12-06 17:50:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:08,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:08,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:08,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817764322] [2022-12-06 17:50:08,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817764322] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:08,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273933768] [2022-12-06 17:50:08,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:50:08,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:08,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:08,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:08,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 17:50:08,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:50:08,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:08,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:08,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:08,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:08,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273933768] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:08,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:08,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-06 17:50:08,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848837071] [2022-12-06 17:50:08,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:50:08,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:50:08,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:50:08,578 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:08,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 1322 transitions, 37364 flow. Second operand has 19 states, 19 states have (on average 50.421052631578945) internal successors, (958), 19 states have internal predecessors, (958), 0 states have call successors, (0), 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 17:50:08,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:08,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:08,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:11,973 INFO L130 PetriNetUnfolder]: 2973/8224 cut-off events. [2022-12-06 17:50:11,974 INFO L131 PetriNetUnfolder]: For 100864/103856 co-relation queries the response was YES. [2022-12-06 17:50:12,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93652 conditions, 8224 events. 2973/8224 cut-off events. For 100864/103856 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 83616 event pairs, 59 based on Foata normal form. 122/7851 useless extension candidates. Maximal degree in co-relation 70734. Up to 5174 conditions per place. [2022-12-06 17:50:12,130 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 1475 selfloop transitions, 907 changer transitions 406/2830 dead transitions. [2022-12-06 17:50:12,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 2830 transitions, 84195 flow [2022-12-06 17:50:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-06 17:50:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-12-06 17:50:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 3929 transitions. [2022-12-06 17:50:12,134 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7275925925925926 [2022-12-06 17:50:12,134 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 349 predicate places. [2022-12-06 17:50:12,134 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 2830 transitions, 84195 flow [2022-12-06 17:50:12,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.421052631578945) internal successors, (958), 19 states have internal predecessors, (958), 0 states have call successors, (0), 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 17:50:12,135 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:12,135 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:12,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-06 17:50:12,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 17:50:12,341 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1422987081, now seen corresponding path program 9 times [2022-12-06 17:50:12,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:12,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596162579] [2022-12-06 17:50:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:12,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:12,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:12,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596162579] [2022-12-06 17:50:12,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596162579] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:12,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090741761] [2022-12-06 17:50:12,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:50:12,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:12,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:12,446 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:12,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-06 17:50:12,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 17:50:12,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:12,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:12,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:12,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:12,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090741761] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:12,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:12,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-12-06 17:50:12,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131999433] [2022-12-06 17:50:12,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:12,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:50:12,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:12,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:50:12,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:50:12,672 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:12,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 2830 transitions, 84195 flow. Second operand has 20 states, 20 states have (on average 50.4) internal successors, (1008), 20 states have internal predecessors, (1008), 0 states have call successors, (0), 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 17:50:12,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:12,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:12,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:16,738 INFO L130 PetriNetUnfolder]: 2988/8280 cut-off events. [2022-12-06 17:50:16,738 INFO L131 PetriNetUnfolder]: For 111956/115674 co-relation queries the response was YES. [2022-12-06 17:50:16,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100569 conditions, 8280 events. 2988/8280 cut-off events. For 111956/115674 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 84225 event pairs, 77 based on Foata normal form. 64/7842 useless extension candidates. Maximal degree in co-relation 87609. Up to 5198 conditions per place. [2022-12-06 17:50:16,801 INFO L137 encePairwiseOnDemand]: 61/72 looper letters, 1889 selfloop transitions, 515 changer transitions 416/2862 dead transitions. [2022-12-06 17:50:16,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 2862 transitions, 90625 flow [2022-12-06 17:50:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-06 17:50:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-06 17:50:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1321 transitions. [2022-12-06 17:50:16,803 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7338888888888889 [2022-12-06 17:50:16,803 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 373 predicate places. [2022-12-06 17:50:16,803 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 2862 transitions, 90625 flow [2022-12-06 17:50:16,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 50.4) internal successors, (1008), 20 states have internal predecessors, (1008), 0 states have call successors, (0), 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 17:50:16,804 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:16,804 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:16,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-06 17:50:17,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-06 17:50:17,009 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:17,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1969042809, now seen corresponding path program 10 times [2022-12-06 17:50:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:17,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527917035] [2022-12-06 17:50:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:17,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:17,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:17,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527917035] [2022-12-06 17:50:17,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527917035] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:17,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716303080] [2022-12-06 17:50:17,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:50:17,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:17,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:17,087 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:17,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-06 17:50:17,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:50:17,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:17,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:17,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:17,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:17,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716303080] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:17,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:17,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-06 17:50:17,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19066088] [2022-12-06 17:50:17,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:17,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:50:17,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:17,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:50:17,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:50:17,277 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:17,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 2862 transitions, 90625 flow. Second operand has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:50:17,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:17,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:17,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:23,303 INFO L130 PetriNetUnfolder]: 4098/11428 cut-off events. [2022-12-06 17:50:23,303 INFO L131 PetriNetUnfolder]: For 166656/171920 co-relation queries the response was YES. [2022-12-06 17:50:23,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146196 conditions, 11428 events. 4098/11428 cut-off events. For 166656/171920 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 123475 event pairs, 107 based on Foata normal form. 192/10901 useless extension candidates. Maximal degree in co-relation 122286. Up to 7118 conditions per place. [2022-12-06 17:50:23,408 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 2154 selfloop transitions, 1059 changer transitions 511/3766 dead transitions. [2022-12-06 17:50:23,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 3766 transitions, 126712 flow [2022-12-06 17:50:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-06 17:50:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-06 17:50:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 2853 transitions. [2022-12-06 17:50:23,412 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7337962962962963 [2022-12-06 17:50:23,412 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 426 predicate places. [2022-12-06 17:50:23,412 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 3766 transitions, 126712 flow [2022-12-06 17:50:23,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:50:23,413 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:23,413 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:23,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-06 17:50:23,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-06 17:50:23,618 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:23,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1472707225, now seen corresponding path program 11 times [2022-12-06 17:50:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:23,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183081340] [2022-12-06 17:50:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:23,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:23,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183081340] [2022-12-06 17:50:23,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183081340] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:23,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101740282] [2022-12-06 17:50:23,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 17:50:23,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:23,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:23,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:23,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-06 17:50:23,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 17:50:23,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:23,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:23,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:23,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:23,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101740282] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:23,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:23,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-06 17:50:23,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621739827] [2022-12-06 17:50:23,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:23,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:50:23,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:23,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:50:23,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:50:23,932 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:23,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 3766 transitions, 126712 flow. Second operand has 19 states, 19 states have (on average 50.68421052631579) internal successors, (963), 19 states have internal predecessors, (963), 0 states have call successors, (0), 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 17:50:23,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:23,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:23,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:32,886 INFO L130 PetriNetUnfolder]: 4208/11664 cut-off events. [2022-12-06 17:50:32,886 INFO L131 PetriNetUnfolder]: For 185311/191019 co-relation queries the response was YES. [2022-12-06 17:50:32,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159654 conditions, 11664 events. 4208/11664 cut-off events. For 185311/191019 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 126627 event pairs, 101 based on Foata normal form. 231/11201 useless extension candidates. Maximal degree in co-relation 157579. Up to 7337 conditions per place. [2022-12-06 17:50:32,976 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 1957 selfloop transitions, 1386 changer transitions 546/3931 dead transitions. [2022-12-06 17:50:32,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 3931 transitions, 140119 flow [2022-12-06 17:50:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-12-06 17:50:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2022-12-06 17:50:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 4493 transitions. [2022-12-06 17:50:32,979 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7256136950904393 [2022-12-06 17:50:32,980 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 509 predicate places. [2022-12-06 17:50:32,980 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 3931 transitions, 140119 flow [2022-12-06 17:50:32,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.68421052631579) internal successors, (963), 19 states have internal predecessors, (963), 0 states have call successors, (0), 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 17:50:32,980 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:32,980 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:32,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-06 17:50:33,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:33,191 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1117301775, now seen corresponding path program 12 times [2022-12-06 17:50:33,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:33,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516513829] [2022-12-06 17:50:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:33,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:33,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:33,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516513829] [2022-12-06 17:50:33,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516513829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:33,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380596361] [2022-12-06 17:50:33,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 17:50:33,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:33,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:33,271 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:33,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-06 17:50:33,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-06 17:50:33,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:33,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:33,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:33,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:33,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380596361] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:33,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:33,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-06 17:50:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972313143] [2022-12-06 17:50:33,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:33,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:50:33,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:50:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:50:33,462 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:33,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 3931 transitions, 140119 flow. Second operand has 19 states, 19 states have (on average 50.578947368421055) internal successors, (961), 19 states have internal predecessors, (961), 0 states have call successors, (0), 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 17:50:33,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:33,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:33,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:42,804 INFO L130 PetriNetUnfolder]: 4251/11831 cut-off events. [2022-12-06 17:50:42,804 INFO L131 PetriNetUnfolder]: For 208440/214954 co-relation queries the response was YES. [2022-12-06 17:50:42,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171087 conditions, 11831 events. 4251/11831 cut-off events. For 208440/214954 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 128949 event pairs, 135 based on Foata normal form. 244/11393 useless extension candidates. Maximal degree in co-relation 155346. Up to 7443 conditions per place. [2022-12-06 17:50:42,898 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 2128 selfloop transitions, 1268 changer transitions 565/4003 dead transitions. [2022-12-06 17:50:42,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 4003 transitions, 150727 flow [2022-12-06 17:50:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-06 17:50:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-06 17:50:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3594 transitions. [2022-12-06 17:50:42,901 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7234299516908212 [2022-12-06 17:50:42,901 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 575 predicate places. [2022-12-06 17:50:42,902 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 4003 transitions, 150727 flow [2022-12-06 17:50:42,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.578947368421055) internal successors, (961), 19 states have internal predecessors, (961), 0 states have call successors, (0), 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 17:50:42,902 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:42,902 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:42,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-06 17:50:43,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-06 17:50:43,107 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:43,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash 66408581, now seen corresponding path program 13 times [2022-12-06 17:50:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:43,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125097025] [2022-12-06 17:50:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:43,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:43,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:43,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125097025] [2022-12-06 17:50:43,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125097025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:43,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669643351] [2022-12-06 17:50:43,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 17:50:43,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:43,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:43,181 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:43,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-06 17:50:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:43,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:43,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:43,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:50:43,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669643351] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:43,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:43,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-06 17:50:43,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170344529] [2022-12-06 17:50:43,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:43,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:50:43,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:50:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:50:43,372 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:43,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 4003 transitions, 150727 flow. Second operand has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:50:43,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:43,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:43,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:53,269 INFO L130 PetriNetUnfolder]: 4697/13227 cut-off events. [2022-12-06 17:50:53,269 INFO L131 PetriNetUnfolder]: For 248658/255878 co-relation queries the response was YES. [2022-12-06 17:50:53,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199521 conditions, 13227 events. 4697/13227 cut-off events. For 248658/255878 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 147611 event pairs, 125 based on Foata normal form. 200/12606 useless extension candidates. Maximal degree in co-relation 196756. Up to 8216 conditions per place. [2022-12-06 17:50:53,377 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 3175 selfloop transitions, 544 changer transitions 638/4399 dead transitions. [2022-12-06 17:50:53,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 4399 transitions, 174647 flow [2022-12-06 17:50:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-06 17:50:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-06 17:50:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2642 transitions. [2022-12-06 17:50:53,380 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7338888888888889 [2022-12-06 17:50:53,380 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 624 predicate places. [2022-12-06 17:50:53,380 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 4399 transitions, 174647 flow [2022-12-06 17:50:53,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:50:53,380 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:53,381 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:53,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-06 17:50:53,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:53,585 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:50:53,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:53,586 INFO L85 PathProgramCache]: Analyzing trace with hash 402248139, now seen corresponding path program 14 times [2022-12-06 17:50:53,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:53,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750865398] [2022-12-06 17:50:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:53,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:53,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750865398] [2022-12-06 17:50:53,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750865398] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:53,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509317099] [2022-12-06 17:50:53,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:50:53,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:53,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:53,653 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:53,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-06 17:50:53,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:50:53,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:53,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:50:53,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:50:53,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:50:53,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509317099] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:53,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:53,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-06 17:50:53,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136309097] [2022-12-06 17:50:53,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:53,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:50:53,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:53,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:50:53,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:50:53,829 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:50:53,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 4399 transitions, 174647 flow. Second operand has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:50:53,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:53,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:50:53,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:51:16,702 INFO L130 PetriNetUnfolder]: 7094/20274 cut-off events. [2022-12-06 17:51:16,702 INFO L131 PetriNetUnfolder]: For 403357/414318 co-relation queries the response was YES. [2022-12-06 17:51:16,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319042 conditions, 20274 events. 7094/20274 cut-off events. For 403357/414318 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 240900 event pairs, 151 based on Foata normal form. 366/19277 useless extension candidates. Maximal degree in co-relation 314358. Up to 12686 conditions per place. [2022-12-06 17:51:16,880 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 4053 selfloop transitions, 1213 changer transitions 953/6261 dead transitions. [2022-12-06 17:51:16,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 6261 transitions, 263447 flow [2022-12-06 17:51:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-06 17:51:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-12-06 17:51:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 3138 transitions. [2022-12-06 17:51:16,882 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7387005649717514 [2022-12-06 17:51:16,883 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 682 predicate places. [2022-12-06 17:51:16,883 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 6261 transitions, 263447 flow [2022-12-06 17:51:16,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:51:16,883 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:51:16,883 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:51:16,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-06 17:51:17,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:51:17,089 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:51:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:51:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1584782877, now seen corresponding path program 15 times [2022-12-06 17:51:17,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:51:17,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568277470] [2022-12-06 17:51:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:51:17,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:51:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:51:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:51:17,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:51:17,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568277470] [2022-12-06 17:51:17,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568277470] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:51:17,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326404260] [2022-12-06 17:51:17,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:51:17,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:51:17,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:51:17,171 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:51:17,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-06 17:51:17,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 17:51:17,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:51:17,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:51:17,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:51:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:51:17,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:51:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:51:17,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326404260] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:51:17,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:51:17,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-06 17:51:17,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492558298] [2022-12-06 17:51:17,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:51:17,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:51:17,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:51:17,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:51:17,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:51:17,371 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:51:17,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 6261 transitions, 263447 flow. Second operand has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 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 17:51:17,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:51:17,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:51:17,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:51:50,872 INFO L130 PetriNetUnfolder]: 8019/22982 cut-off events. [2022-12-06 17:51:50,872 INFO L131 PetriNetUnfolder]: For 489436/502643 co-relation queries the response was YES. [2022-12-06 17:51:50,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378439 conditions, 22982 events. 8019/22982 cut-off events. For 489436/502643 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 279744 event pairs, 149 based on Foata normal form. 388/21768 useless extension candidates. Maximal degree in co-relation 361041. Up to 14377 conditions per place. [2022-12-06 17:51:51,082 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 5149 selfloop transitions, 900 changer transitions 1039/7130 dead transitions. [2022-12-06 17:51:51,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 7130 transitions, 314523 flow [2022-12-06 17:51:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-06 17:51:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-06 17:51:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2594 transitions. [2022-12-06 17:51:51,084 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7352607709750567 [2022-12-06 17:51:51,085 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 730 predicate places. [2022-12-06 17:51:51,085 INFO L495 AbstractCegarLoop]: Abstraction has has 794 places, 7130 transitions, 314523 flow [2022-12-06 17:51:51,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 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 17:51:51,085 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:51:51,085 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:51:51,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-06 17:51:51,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-06 17:51:51,290 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:51:51,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:51:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash 115393309, now seen corresponding path program 16 times [2022-12-06 17:51:51,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:51:51,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701845863] [2022-12-06 17:51:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:51:51,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:51:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:51:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:51:51,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:51:51,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701845863] [2022-12-06 17:51:51,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701845863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:51:51,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953188704] [2022-12-06 17:51:51,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:51:51,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:51:51,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:51:51,364 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:51:51,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-06 17:51:51,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:51:51,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:51:51,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:51:51,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:51:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:51:51,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:51:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:51:51,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953188704] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:51:51,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:51:51,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-06 17:51:51,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331081242] [2022-12-06 17:51:51,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:51:51,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:51:51,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:51:51,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:51:51,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:51:51,570 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:51:51,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 7130 transitions, 314523 flow. Second operand has 19 states, 19 states have (on average 50.526315789473685) internal successors, (960), 19 states have internal predecessors, (960), 0 states have call successors, (0), 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 17:51:51,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:51:51,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:51:51,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:52:37,234 INFO L130 PetriNetUnfolder]: 8994/25869 cut-off events. [2022-12-06 17:52:37,234 INFO L131 PetriNetUnfolder]: For 589959/605140 co-relation queries the response was YES. [2022-12-06 17:52:37,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443657 conditions, 25869 events. 8994/25869 cut-off events. For 589959/605140 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 320788 event pairs, 174 based on Foata normal form. 887/24932 useless extension candidates. Maximal degree in co-relation 436993. Up to 16069 conditions per place. [2022-12-06 17:52:37,609 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 4611 selfloop transitions, 2070 changer transitions 1157/7880 dead transitions. [2022-12-06 17:52:37,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 7880 transitions, 363475 flow [2022-12-06 17:52:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-12-06 17:52:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-12-06 17:52:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 3537 transitions. [2022-12-06 17:52:37,611 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7332089552238806 [2022-12-06 17:52:37,612 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 796 predicate places. [2022-12-06 17:52:37,612 INFO L495 AbstractCegarLoop]: Abstraction has has 860 places, 7880 transitions, 363475 flow [2022-12-06 17:52:37,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.526315789473685) internal successors, (960), 19 states have internal predecessors, (960), 0 states have call successors, (0), 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 17:52:37,612 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:52:37,612 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:52:37,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-06 17:52:37,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:52:37,815 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:52:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:52:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash -773972859, now seen corresponding path program 17 times [2022-12-06 17:52:37,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:52:37,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205431338] [2022-12-06 17:52:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:52:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:52:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:52:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:52:37,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:52:37,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205431338] [2022-12-06 17:52:37,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205431338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:52:37,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397890430] [2022-12-06 17:52:37,904 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 17:52:37,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:52:37,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:52:37,905 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:52:37,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-06 17:52:37,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 17:52:37,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:52:37,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:52:37,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:52:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:52:38,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:52:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:52:38,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397890430] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:52:38,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:52:38,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-06 17:52:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888831547] [2022-12-06 17:52:38,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:52:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:52:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:52:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:52:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:52:38,084 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:52:38,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 860 places, 7880 transitions, 363475 flow. Second operand has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:52:38,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:52:38,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:52:38,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:53:36,247 INFO L130 PetriNetUnfolder]: 9075/26188 cut-off events. [2022-12-06 17:53:36,248 INFO L131 PetriNetUnfolder]: For 626947/640145 co-relation queries the response was YES. [2022-12-06 17:53:36,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470143 conditions, 26188 events. 9075/26188 cut-off events. For 626947/640145 co-relation queries the response was YES. Maximal size of possible extension queue 1657. Compared 326145 event pairs, 140 based on Foata normal form. 925/25296 useless extension candidates. Maximal degree in co-relation 357426. Up to 16313 conditions per place. [2022-12-06 17:53:36,572 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 4655 selfloop transitions, 2116 changer transitions 1208/8021 dead transitions. [2022-12-06 17:53:36,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 8021 transitions, 386324 flow [2022-12-06 17:53:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-06 17:53:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-12-06 17:53:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 3257 transitions. [2022-12-06 17:53:36,576 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7415755919854281 [2022-12-06 17:53:36,576 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 855 predicate places. [2022-12-06 17:53:36,577 INFO L495 AbstractCegarLoop]: Abstraction has has 919 places, 8021 transitions, 386324 flow [2022-12-06 17:53:36,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:53:36,577 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:53:36,578 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:53:36,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-06 17:53:36,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:53:36,784 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:53:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:53:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash 684653681, now seen corresponding path program 18 times [2022-12-06 17:53:36,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:53:36,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227231464] [2022-12-06 17:53:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:53:36,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:53:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:53:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:53:36,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:53:36,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227231464] [2022-12-06 17:53:36,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227231464] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:53:36,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862646342] [2022-12-06 17:53:36,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 17:53:36,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:53:36,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:53:36,892 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:53:36,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-06 17:53:36,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-06 17:53:36,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:53:36,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:53:36,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:53:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:53:37,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:53:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:53:37,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862646342] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:53:37,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:53:37,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-06 17:53:37,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058492161] [2022-12-06 17:53:37,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:53:37,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:53:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:53:37,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:53:37,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:53:37,090 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:53:37,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 919 places, 8021 transitions, 386324 flow. Second operand has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 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 17:53:37,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:53:37,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:53:37,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:55:00,757 INFO L130 PetriNetUnfolder]: 10943/31235 cut-off events. [2022-12-06 17:55:00,757 INFO L131 PetriNetUnfolder]: For 796246/812220 co-relation queries the response was YES. [2022-12-06 17:55:00,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586052 conditions, 31235 events. 10943/31235 cut-off events. For 796246/812220 co-relation queries the response was YES. Maximal size of possible extension queue 2090. Compared 398127 event pairs, 180 based on Foata normal form. 710/29804 useless extension candidates. Maximal degree in co-relation 449059. Up to 19530 conditions per place. [2022-12-06 17:55:01,072 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 6330 selfloop transitions, 1939 changer transitions 1359/9670 dead transitions. [2022-12-06 17:55:01,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 992 places, 9670 transitions, 485088 flow [2022-12-06 17:55:01,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-06 17:55:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-12-06 17:55:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 3865 transitions. [2022-12-06 17:55:01,075 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7254129129129129 [2022-12-06 17:55:01,075 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 928 predicate places. [2022-12-06 17:55:01,075 INFO L495 AbstractCegarLoop]: Abstraction has has 992 places, 9670 transitions, 485088 flow [2022-12-06 17:55:01,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 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 17:55:01,076 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:55:01,076 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:55:01,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-06 17:55:01,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:55:01,280 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:55:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:55:01,281 INFO L85 PathProgramCache]: Analyzing trace with hash 530156691, now seen corresponding path program 19 times [2022-12-06 17:55:01,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:55:01,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505666293] [2022-12-06 17:55:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:55:01,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:55:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:55:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:55:01,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:55:01,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505666293] [2022-12-06 17:55:01,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505666293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:55:01,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117141064] [2022-12-06 17:55:01,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 17:55:01,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:55:01,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:55:01,347 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:55:01,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-06 17:55:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:55:01,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:55:01,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:55:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:55:01,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:55:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:55:01,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117141064] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:55:01,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:55:01,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-06 17:55:01,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991482934] [2022-12-06 17:55:01,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:55:01,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:55:01,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:55:01,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:55:01,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:55:01,535 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:55:01,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 992 places, 9670 transitions, 485088 flow. Second operand has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 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 17:55:01,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:55:01,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:55:01,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:56:49,531 INFO L130 PetriNetUnfolder]: 11317/32484 cut-off events. [2022-12-06 17:56:49,532 INFO L131 PetriNetUnfolder]: For 882086/899548 co-relation queries the response was YES. [2022-12-06 17:56:49,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631194 conditions, 32484 events. 11317/32484 cut-off events. For 882086/899548 co-relation queries the response was YES. Maximal size of possible extension queue 2145. Compared 416049 event pairs, 167 based on Foata normal form. 812/31030 useless extension candidates. Maximal degree in co-relation 599761. Up to 20210 conditions per place. [2022-12-06 17:56:49,854 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 6111 selfloop transitions, 2389 changer transitions 1386/9928 dead transitions. [2022-12-06 17:56:49,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1062 places, 9928 transitions, 517784 flow [2022-12-06 17:56:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-06 17:56:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-12-06 17:56:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 3749 transitions. [2022-12-06 17:56:49,856 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7333724569640062 [2022-12-06 17:56:49,857 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 998 predicate places. [2022-12-06 17:56:49,857 INFO L495 AbstractCegarLoop]: Abstraction has has 1062 places, 9928 transitions, 517784 flow [2022-12-06 17:56:49,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 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 17:56:49,857 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:56:49,857 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:56:49,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-06 17:56:50,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-06 17:56:50,062 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:56:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:56:50,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1190604065, now seen corresponding path program 20 times [2022-12-06 17:56:50,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:56:50,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233180803] [2022-12-06 17:56:50,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:56:50,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:56:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:56:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:56:50,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:56:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233180803] [2022-12-06 17:56:50,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233180803] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:56:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387864237] [2022-12-06 17:56:50,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:56:50,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:56:50,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:56:50,132 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:56:50,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-06 17:56:50,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:56:50,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:56:50,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:56:50,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:56:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:56:50,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:56:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:56:50,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387864237] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:56:50,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:56:50,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-06 17:56:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263060718] [2022-12-06 17:56:50,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:56:50,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:56:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:56:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:56:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:56:50,332 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:56:50,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1062 places, 9928 transitions, 517784 flow. Second operand has 21 states, 21 states have (on average 50.333333333333336) internal successors, (1057), 21 states have internal predecessors, (1057), 0 states have call successors, (0), 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 17:56:50,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:56:50,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:56:50,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:58:39,302 INFO L130 PetriNetUnfolder]: 11334/32615 cut-off events. [2022-12-06 17:58:39,302 INFO L131 PetriNetUnfolder]: For 949016/967460 co-relation queries the response was YES. [2022-12-06 17:58:39,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657771 conditions, 32615 events. 11334/32615 cut-off events. For 949016/967460 co-relation queries the response was YES. Maximal size of possible extension queue 2165. Compared 418570 event pairs, 158 based on Foata normal form. 638/30979 useless extension candidates. Maximal degree in co-relation 624776. Up to 20279 conditions per place. [2022-12-06 17:58:39,743 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 7450 selfloop transitions, 1097 changer transitions 1397/9986 dead transitions. [2022-12-06 17:58:39,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1086 places, 9986 transitions, 540762 flow [2022-12-06 17:58:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-06 17:58:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-06 17:58:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1306 transitions. [2022-12-06 17:58:39,745 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7255555555555555 [2022-12-06 17:58:39,745 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 1022 predicate places. [2022-12-06 17:58:39,745 INFO L495 AbstractCegarLoop]: Abstraction has has 1086 places, 9986 transitions, 540762 flow [2022-12-06 17:58:39,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.333333333333336) internal successors, (1057), 21 states have internal predecessors, (1057), 0 states have call successors, (0), 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 17:58:39,746 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:58:39,746 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:58:39,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-06 17:58:39,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-06 17:58:39,950 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:58:39,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:58:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1591314209, now seen corresponding path program 21 times [2022-12-06 17:58:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:58:39,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052932315] [2022-12-06 17:58:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:58:39,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:58:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:58:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:58:40,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:58:40,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052932315] [2022-12-06 17:58:40,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052932315] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:58:40,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497481760] [2022-12-06 17:58:40,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:58:40,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:58:40,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:58:40,020 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:58:40,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-06 17:58:40,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-06 17:58:40,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:58:40,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:58:40,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:58:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:58:40,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:58:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:58:40,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497481760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:58:40,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:58:40,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-06 17:58:40,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387918921] [2022-12-06 17:58:40,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:58:40,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:58:40,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:58:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:58:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:58:40,220 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 17:58:40,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1086 places, 9986 transitions, 540762 flow. Second operand has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 17:58:40,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:58:40,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 17:58:40,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:01:01,643 INFO L130 PetriNetUnfolder]: 11715/33797 cut-off events. [2022-12-06 18:01:01,644 INFO L131 PetriNetUnfolder]: For 1042173/1062392 co-relation queries the response was YES. [2022-12-06 18:01:01,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705879 conditions, 33797 events. 11715/33797 cut-off events. For 1042173/1062392 co-relation queries the response was YES. Maximal size of possible extension queue 2245. Compared 436601 event pairs, 167 based on Foata normal form. 656/32064 useless extension candidates. Maximal degree in co-relation 650039. Up to 20997 conditions per place. [2022-12-06 18:01:02,093 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 7608 selfloop transitions, 1203 changer transitions 1443/10296 dead transitions. [2022-12-06 18:01:02,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1125 places, 10296 transitions, 578305 flow [2022-12-06 18:01:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-06 18:01:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-06 18:01:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2153 transitions. [2022-12-06 18:01:02,095 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7475694444444444 [2022-12-06 18:01:02,097 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 1061 predicate places. [2022-12-06 18:01:02,097 INFO L495 AbstractCegarLoop]: Abstraction has has 1125 places, 10296 transitions, 578305 flow [2022-12-06 18:01:02,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 18:01:02,097 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:01:02,097 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:01:02,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-06 18:01:02,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-06 18:01:02,305 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:01:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:01:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1632566703, now seen corresponding path program 22 times [2022-12-06 18:01:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:01:02,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712705208] [2022-12-06 18:01:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:01:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:01:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:01:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:01:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:01:02,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712705208] [2022-12-06 18:01:02,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712705208] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:01:02,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841508689] [2022-12-06 18:01:02,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:01:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:01:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:01:02,397 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:01:02,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-06 18:01:02,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:01:02,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:01:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 18:01:02,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:01:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:01:02,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:01:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:01:02,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841508689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:01:02,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:01:02,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-06 18:01:02,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887256612] [2022-12-06 18:01:02,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:01:02,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 18:01:02,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:01:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 18:01:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-12-06 18:01:02,620 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 18:01:02,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1125 places, 10296 transitions, 578305 flow. Second operand has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 18:01:02,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:01:02,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 18:01:02,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:03:41,590 INFO L130 PetriNetUnfolder]: 12281/35465 cut-off events. [2022-12-06 18:03:41,590 INFO L131 PetriNetUnfolder]: For 1163706/1185601 co-relation queries the response was YES. [2022-12-06 18:03:41,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765477 conditions, 35465 events. 12281/35465 cut-off events. For 1163706/1185601 co-relation queries the response was YES. Maximal size of possible extension queue 2323. Compared 461504 event pairs, 201 based on Foata normal form. 654/33579 useless extension candidates. Maximal degree in co-relation 673675. Up to 21968 conditions per place. [2022-12-06 18:03:42,115 INFO L137 encePairwiseOnDemand]: 60/72 looper letters, 8010 selfloop transitions, 1192 changer transitions 1491/10735 dead transitions. [2022-12-06 18:03:42,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1170 places, 10735 transitions, 624265 flow [2022-12-06 18:03:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-06 18:03:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-06 18:03:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2442 transitions. [2022-12-06 18:03:42,117 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7373188405797102 [2022-12-06 18:03:42,118 INFO L294 CegarLoopForPetriNet]: 64 programPoint places, 1106 predicate places. [2022-12-06 18:03:42,118 INFO L495 AbstractCegarLoop]: Abstraction has has 1170 places, 10735 transitions, 624265 flow [2022-12-06 18:03:42,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.473684210526315) internal successors, (959), 19 states have internal predecessors, (959), 0 states have call successors, (0), 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 18:03:42,118 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:03:42,118 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:03:42,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-06 18:03:42,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:03:42,323 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:03:42,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:03:42,324 INFO L85 PathProgramCache]: Analyzing trace with hash 164570985, now seen corresponding path program 23 times [2022-12-06 18:03:42,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:03:42,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510603124] [2022-12-06 18:03:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:03:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:03:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:03:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:03:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:03:42,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510603124] [2022-12-06 18:03:42,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510603124] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:03:42,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738131003] [2022-12-06 18:03:42,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:03:42,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:03:42,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:03:42,406 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:03:42,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-06 18:03:42,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:03:42,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:03:42,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 18:03:42,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:03:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:03:42,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:03:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:03:42,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738131003] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:03:42,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:03:42,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-06 18:03:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855588218] [2022-12-06 18:03:42,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:03:42,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 18:03:42,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:03:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 18:03:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-12-06 18:03:42,600 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2022-12-06 18:03:42,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1170 places, 10735 transitions, 624265 flow. Second operand has 19 states, 19 states have (on average 50.578947368421055) internal successors, (961), 19 states have internal predecessors, (961), 0 states have call successors, (0), 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 18:03:42,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:03:42,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2022-12-06 18:03:42,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 18:04:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 18:04:01,687 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 18:04:01,697 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 18:04:01,698 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 18:04:01,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-06 18:04:01,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:04:01,899 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 48/72 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 90456 conditions, 3659 events (1193/3658 cut-off events. For 137445/141600 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 42320 event pairs, 12 based on Foata normal form. 103/4193 useless extension candidates. Maximal degree in co-relation 86668. Up to 2389 conditions per place.). [2022-12-06 18:04:01,907 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 18:04:01,907 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 18:04:01,908 INFO L458 BasicCegarLoop]: Path program histogram: [23, 7, 1] [2022-12-06 18:04:01,910 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 18:04:01,910 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 18:04:01,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:04:01 BasicIcfg [2022-12-06 18:04:01,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 18:04:01,913 INFO L158 Benchmark]: Toolchain (without parser) took 847625.70ms. Allocated memory was 205.5MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 181.6MB in the beginning and 953.5MB in the end (delta: -771.8MB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2022-12-06 18:04:01,913 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 182.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 18:04:01,913 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.16ms. Allocated memory is still 205.5MB. Free memory was 181.1MB in the beginning and 170.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-06 18:04:01,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.42ms. Allocated memory is still 205.5MB. Free memory was 170.1MB in the beginning and 168.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 18:04:01,914 INFO L158 Benchmark]: Boogie Preprocessor took 27.80ms. Allocated memory is still 205.5MB. Free memory was 168.5MB in the beginning and 167.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 18:04:01,916 INFO L158 Benchmark]: RCFGBuilder took 356.24ms. Allocated memory is still 205.5MB. Free memory was 167.5MB in the beginning and 153.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 18:04:01,916 INFO L158 Benchmark]: TraceAbstraction took 847040.90ms. Allocated memory was 205.5MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 152.8MB in the beginning and 953.5MB in the end (delta: -800.7MB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2022-12-06 18:04:01,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 182.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 165.16ms. Allocated memory is still 205.5MB. Free memory was 181.1MB in the beginning and 170.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.42ms. Allocated memory is still 205.5MB. Free memory was 170.1MB in the beginning and 168.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.80ms. Allocated memory is still 205.5MB. Free memory was 168.5MB in the beginning and 167.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 356.24ms. Allocated memory is still 205.5MB. Free memory was 167.5MB in the beginning and 153.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 847040.90ms. Allocated memory was 205.5MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 152.8MB in the beginning and 953.5MB in the end (delta: -800.7MB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 48/72 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 90456 conditions, 3659 events (1193/3658 cut-off events. For 137445/141600 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 42320 event pairs, 12 based on Foata normal form. 103/4193 useless extension candidates. Maximal degree in co-relation 86668. Up to 2389 conditions per place.). - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 48/72 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 90456 conditions, 3659 events (1193/3658 cut-off events. For 137445/141600 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 42320 event pairs, 12 based on Foata normal form. 103/4193 useless extension candidates. Maximal degree in co-relation 86668. Up to 2389 conditions per place.). - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 48/72 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 90456 conditions, 3659 events (1193/3658 cut-off events. For 137445/141600 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 42320 event pairs, 12 based on Foata normal form. 103/4193 useless extension candidates. Maximal degree in co-relation 86668. Up to 2389 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 847.0s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.0s, AutomataDifference: 833.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5973 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5973 mSDsluCounter, 3853 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3183 mSDsCounter, 562 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16684 IncrementalHoareTripleChecker+Invalid, 17246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 562 mSolverCounterUnsat, 670 mSDtfsCounter, 16684 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4151 GetRequests, 2708 SyntacticMatches, 87 SemanticMatches, 1356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28760 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=624265occurred in iteration=30, InterpolantAutomatonStates: 1142, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 3360 NumberOfCodeBlocks, 3340 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 4778 ConstructedInterpolants, 0 QuantifiedInterpolants, 9739 SizeOfPredicates, 182 NumberOfNonLiveVariables, 3619 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 79 InterpolantComputations, 7 PerfectInterpolantSequences, 352/543 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown