/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:43:56,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:43:56,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:43:56,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:43:56,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:43:56,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:43:56,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:43:56,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:43:56,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:43:56,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:43:56,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:43:56,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:43:56,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:43:56,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:43:56,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:43:56,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:43:56,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:43:56,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:43:56,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:43:56,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:43:56,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:43:56,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:43:56,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:43:56,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:43:56,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:43:56,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:43:56,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:43:56,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:43:56,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:43:56,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:43:56,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:43:56,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:43:56,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:43:56,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:43:56,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:43:56,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:43:56,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:43:56,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:43:56,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:43:56,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:43:56,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:43:56,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 09:43:56,780 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:43:56,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:43:56,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:43:56,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:43:56,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:43:56,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:43:56,782 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:43:56,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:43:56,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:43:56,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:43:56,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:43:56,784 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:43:57,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:43:57,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:43:57,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:43:57,043 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:43:57,043 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:43:57,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2023-01-28 09:43:58,205 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:43:58,343 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:43:58,344 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2023-01-28 09:43:58,349 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8477fc61a/1d43d73020bb431c9b135ae7cde44334/FLAGa4d4fb845 [2023-01-28 09:43:58,361 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8477fc61a/1d43d73020bb431c9b135ae7cde44334 [2023-01-28 09:43:58,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:43:58,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:43:58,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:43:58,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:43:58,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:43:58,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c246f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58, skipping insertion in model container [2023-01-28 09:43:58,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:43:58,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:43:58,532 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2023-01-28 09:43:58,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:43:58,544 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:43:58,574 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2023-01-28 09:43:58,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:43:58,582 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:43:58,583 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:43:58,587 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:43:58,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58 WrapperNode [2023-01-28 09:43:58,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:43:58,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:43:58,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:43:58,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:43:58,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,623 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-01-28 09:43:58,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:43:58,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:43:58,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:43:58,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:43:58,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:43:58,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:43:58,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:43:58,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:43:58,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (1/1) ... [2023-01-28 09:43:58,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:43:58,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:58,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 09:43:58,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 09:43:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:43:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:43:58,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:43:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:43:58,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:43:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:43:58,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:43:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:43:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:43:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:43:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:43:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:43:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:43:58,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:43:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:43:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:43:58,800 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:43:58,893 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:43:58,894 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:43:59,050 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:43:59,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:43:59,070 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 09:43:59,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:43:59 BoogieIcfgContainer [2023-01-28 09:43:59,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:43:59,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:43:59,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:43:59,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:43:59,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:43:58" (1/3) ... [2023-01-28 09:43:59,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebb7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:43:59, skipping insertion in model container [2023-01-28 09:43:59,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:58" (2/3) ... [2023-01-28 09:43:59,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebb7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:43:59, skipping insertion in model container [2023-01-28 09:43:59,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:43:59" (3/3) ... [2023-01-28 09:43:59,077 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2023-01-28 09:43:59,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:43:59,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:43:59,090 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:43:59,158 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:43:59,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 103 transitions, 230 flow [2023-01-28 09:43:59,288 INFO L130 PetriNetUnfolder]: 7/100 cut-off events. [2023-01-28 09:43:59,288 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:43:59,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 7/100 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-01-28 09:43:59,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 103 transitions, 230 flow [2023-01-28 09:43:59,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 90 transitions, 198 flow [2023-01-28 09:43:59,306 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:43:59,316 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 90 transitions, 198 flow [2023-01-28 09:43:59,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 90 transitions, 198 flow [2023-01-28 09:43:59,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 90 transitions, 198 flow [2023-01-28 09:43:59,369 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2023-01-28 09:43:59,370 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:43:59,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 90 events. 7/90 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-01-28 09:43:59,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2023-01-28 09:44:01,405 INFO L134 LiptonReduction]: Checked pairs total: 1280 [2023-01-28 09:44:01,406 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-01-28 09:44:01,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:44:01,436 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;@4be59f63, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:44:01,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:44:01,448 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-01-28 09:44:01,448 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:44:01,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:01,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:01,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:01,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1669197162, now seen corresponding path program 1 times [2023-01-28 09:44:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095015074] [2023-01-28 09:44:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:01,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:01,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095015074] [2023-01-28 09:44:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095015074] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:01,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:01,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:44:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138150107] [2023-01-28 09:44:01,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:01,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:02,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:02,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-01-28 09:44:02,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:02,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:02,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-01-28 09:44:02,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:02,353 INFO L130 PetriNetUnfolder]: 433/696 cut-off events. [2023-01-28 09:44:02,354 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-01-28 09:44:02,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 696 events. 433/696 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2652 event pairs, 74 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 1212. Up to 359 conditions per place. [2023-01-28 09:44:02,365 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 55 selfloop transitions, 5 changer transitions 22/82 dead transitions. [2023-01-28 09:44:02,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 82 transitions, 382 flow [2023-01-28 09:44:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:44:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:44:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 623 transitions. [2023-01-28 09:44:02,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2023-01-28 09:44:02,387 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 623 transitions. [2023-01-28 09:44:02,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 623 transitions. [2023-01-28 09:44:02,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:02,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 623 transitions. [2023-01-28 09:44:02,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:02,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:02,406 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:02,407 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 62 flow. Second operand 7 states and 623 transitions. [2023-01-28 09:44:02,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 82 transitions, 382 flow [2023-01-28 09:44:02,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 82 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:44:02,415 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2023-01-28 09:44:02,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-28 09:44:02,420 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 09:44:02,421 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2023-01-28 09:44:02,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:02,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:02,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:02,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:44:02,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:02,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:02,423 INFO L85 PathProgramCache]: Analyzing trace with hash 550478170, now seen corresponding path program 2 times [2023-01-28 09:44:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:02,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418077810] [2023-01-28 09:44:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:02,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:02,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:02,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418077810] [2023-01-28 09:44:02,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418077810] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:02,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:02,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:44:02,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373153878] [2023-01-28 09:44:02,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:02,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:44:02,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:02,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:44:02,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:44:02,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-01-28 09:44:02,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:02,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:02,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-01-28 09:44:02,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:03,000 INFO L130 PetriNetUnfolder]: 260/443 cut-off events. [2023-01-28 09:44:03,001 INFO L131 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2023-01-28 09:44:03,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 443 events. 260/443 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1570 event pairs, 21 based on Foata normal form. 32/475 useless extension candidates. Maximal degree in co-relation 940. Up to 239 conditions per place. [2023-01-28 09:44:03,005 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-01-28 09:44:03,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 280 flow [2023-01-28 09:44:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:44:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:44:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-01-28 09:44:03,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184659090909091 [2023-01-28 09:44:03,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-01-28 09:44:03,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-01-28 09:44:03,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:03,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-01-28 09:44:03,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,010 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 4 states and 365 transitions. [2023-01-28 09:44:03,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 280 flow [2023-01-28 09:44:03,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 265 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:44:03,014 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 124 flow [2023-01-28 09:44:03,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-01-28 09:44:03,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 09:44:03,016 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 124 flow [2023-01-28 09:44:03,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:03,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:03,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:44:03,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:03,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1382764458, now seen corresponding path program 3 times [2023-01-28 09:44:03,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:03,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181135081] [2023-01-28 09:44:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:03,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:03,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:03,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181135081] [2023-01-28 09:44:03,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181135081] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:03,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:03,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:44:03,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643923066] [2023-01-28 09:44:03,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:03,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:44:03,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:44:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:44:03,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-01-28 09:44:03,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:03,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-01-28 09:44:03,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:03,437 INFO L130 PetriNetUnfolder]: 215/378 cut-off events. [2023-01-28 09:44:03,437 INFO L131 PetriNetUnfolder]: For 445/445 co-relation queries the response was YES. [2023-01-28 09:44:03,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 378 events. 215/378 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1259 event pairs, 37 based on Foata normal form. 20/398 useless extension candidates. Maximal degree in co-relation 923. Up to 229 conditions per place. [2023-01-28 09:44:03,439 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 36 selfloop transitions, 7 changer transitions 2/45 dead transitions. [2023-01-28 09:44:03,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 293 flow [2023-01-28 09:44:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:44:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:44:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-01-28 09:44:03,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127840909090909 [2023-01-28 09:44:03,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-01-28 09:44:03,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-01-28 09:44:03,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:03,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-01-28 09:44:03,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,444 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,444 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 124 flow. Second operand 4 states and 361 transitions. [2023-01-28 09:44:03,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 293 flow [2023-01-28 09:44:03,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:44:03,450 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 156 flow [2023-01-28 09:44:03,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-01-28 09:44:03,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-01-28 09:44:03,454 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 156 flow [2023-01-28 09:44:03,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:03,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:03,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:44:03,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:03,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash -762312740, now seen corresponding path program 4 times [2023-01-28 09:44:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:03,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724601583] [2023-01-28 09:44:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:03,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:03,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:03,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724601583] [2023-01-28 09:44:03,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724601583] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:03,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:03,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:44:03,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592561751] [2023-01-28 09:44:03,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:03,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-01-28 09:44:03,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:03,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-01-28 09:44:03,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:03,860 INFO L130 PetriNetUnfolder]: 221/380 cut-off events. [2023-01-28 09:44:03,860 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-01-28 09:44:03,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 380 events. 221/380 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1257 event pairs, 25 based on Foata normal form. 12/392 useless extension candidates. Maximal degree in co-relation 976. Up to 152 conditions per place. [2023-01-28 09:44:03,862 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 42 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-01-28 09:44:03,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 364 flow [2023-01-28 09:44:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:44:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:44:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-01-28 09:44:03,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2023-01-28 09:44:03,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-01-28 09:44:03,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-01-28 09:44:03,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:03,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-01-28 09:44:03,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 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) [2023-01-28 09:44:03,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 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) [2023-01-28 09:44:03,873 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 156 flow. Second operand 5 states and 450 transitions. [2023-01-28 09:44:03,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 364 flow [2023-01-28 09:44:03,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 350 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 09:44:03,876 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 202 flow [2023-01-28 09:44:03,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-01-28 09:44:03,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-01-28 09:44:03,878 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 202 flow [2023-01-28 09:44:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:03,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:03,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:03,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:44:03,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:03,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash 366060416, now seen corresponding path program 5 times [2023-01-28 09:44:03,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:03,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789607329] [2023-01-28 09:44:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:03,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:04,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:04,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789607329] [2023-01-28 09:44:04,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789607329] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:04,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:04,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:44:04,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386475413] [2023-01-28 09:44:04,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:04,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:04,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:04,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-01-28 09:44:04,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:04,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-01-28 09:44:04,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:04,165 INFO L130 PetriNetUnfolder]: 211/348 cut-off events. [2023-01-28 09:44:04,165 INFO L131 PetriNetUnfolder]: For 950/950 co-relation queries the response was YES. [2023-01-28 09:44:04,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 348 events. 211/348 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1100 event pairs, 25 based on Foata normal form. 10/358 useless extension candidates. Maximal degree in co-relation 981. Up to 246 conditions per place. [2023-01-28 09:44:04,168 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 34 selfloop transitions, 3 changer transitions 18/55 dead transitions. [2023-01-28 09:44:04,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 416 flow [2023-01-28 09:44:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:44:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:44:04,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 589 transitions. [2023-01-28 09:44:04,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780844155844156 [2023-01-28 09:44:04,170 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 589 transitions. [2023-01-28 09:44:04,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 589 transitions. [2023-01-28 09:44:04,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:04,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 589 transitions. [2023-01-28 09:44:04,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.14285714285714) internal successors, (589), 7 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,176 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 202 flow. Second operand 7 states and 589 transitions. [2023-01-28 09:44:04,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 416 flow [2023-01-28 09:44:04,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:44:04,180 INFO L231 Difference]: Finished difference. Result has 52 places, 30 transitions, 168 flow [2023-01-28 09:44:04,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2023-01-28 09:44:04,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2023-01-28 09:44:04,182 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 168 flow [2023-01-28 09:44:04,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:04,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:04,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:44:04,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:04,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash 877823779, now seen corresponding path program 1 times [2023-01-28 09:44:04,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:04,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628319823] [2023-01-28 09:44:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:04,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:04,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:04,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628319823] [2023-01-28 09:44:04,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628319823] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:04,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:04,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:44:04,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073925343] [2023-01-28 09:44:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:04,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:04,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:04,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:04,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-01-28 09:44:04,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:04,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-01-28 09:44:04,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:04,597 INFO L130 PetriNetUnfolder]: 335/554 cut-off events. [2023-01-28 09:44:04,598 INFO L131 PetriNetUnfolder]: For 1326/1326 co-relation queries the response was YES. [2023-01-28 09:44:04,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 554 events. 335/554 cut-off events. For 1326/1326 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1992 event pairs, 14 based on Foata normal form. 16/570 useless extension candidates. Maximal degree in co-relation 2112. Up to 191 conditions per place. [2023-01-28 09:44:04,603 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 76 selfloop transitions, 34 changer transitions 0/110 dead transitions. [2023-01-28 09:44:04,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 110 transitions, 835 flow [2023-01-28 09:44:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:44:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:44:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 807 transitions. [2023-01-28 09:44:04,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509469696969697 [2023-01-28 09:44:04,606 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 807 transitions. [2023-01-28 09:44:04,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 807 transitions. [2023-01-28 09:44:04,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:04,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 807 transitions. [2023-01-28 09:44:04,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.66666666666667) internal successors, (807), 9 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,611 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,611 INFO L175 Difference]: Start difference. First operand has 52 places, 30 transitions, 168 flow. Second operand 9 states and 807 transitions. [2023-01-28 09:44:04,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 110 transitions, 835 flow [2023-01-28 09:44:04,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 110 transitions, 779 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-01-28 09:44:04,618 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 507 flow [2023-01-28 09:44:04,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=507, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-01-28 09:44:04,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2023-01-28 09:44:04,621 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 507 flow [2023-01-28 09:44:04,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:04,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:04,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:44:04,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:04,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:04,622 INFO L85 PathProgramCache]: Analyzing trace with hash -960778785, now seen corresponding path program 2 times [2023-01-28 09:44:04,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:04,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453337640] [2023-01-28 09:44:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:04,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:04,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453337640] [2023-01-28 09:44:04,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453337640] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:04,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:04,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:44:04,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131626025] [2023-01-28 09:44:04,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:04,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:04,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:04,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-01-28 09:44:04,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 507 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:04,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-01-28 09:44:04,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:04,977 INFO L130 PetriNetUnfolder]: 483/856 cut-off events. [2023-01-28 09:44:04,978 INFO L131 PetriNetUnfolder]: For 5283/5283 co-relation queries the response was YES. [2023-01-28 09:44:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4418 conditions, 856 events. 483/856 cut-off events. For 5283/5283 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3629 event pairs, 39 based on Foata normal form. 20/876 useless extension candidates. Maximal degree in co-relation 3390. Up to 303 conditions per place. [2023-01-28 09:44:04,984 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 98 selfloop transitions, 61 changer transitions 0/159 dead transitions. [2023-01-28 09:44:04,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 159 transitions, 1568 flow [2023-01-28 09:44:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:44:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:44:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 814 transitions. [2023-01-28 09:44:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2023-01-28 09:44:04,987 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 814 transitions. [2023-01-28 09:44:04,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 814 transitions. [2023-01-28 09:44:04,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:04,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 814 transitions. [2023-01-28 09:44:04,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.44444444444444) internal successors, (814), 9 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,990 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:04,990 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 507 flow. Second operand 9 states and 814 transitions. [2023-01-28 09:44:04,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 159 transitions, 1568 flow [2023-01-28 09:44:04,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 159 transitions, 1550 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-28 09:44:05,001 INFO L231 Difference]: Finished difference. Result has 71 places, 99 transitions, 1193 flow [2023-01-28 09:44:05,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1193, PETRI_PLACES=71, PETRI_TRANSITIONS=99} [2023-01-28 09:44:05,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-01-28 09:44:05,002 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 99 transitions, 1193 flow [2023-01-28 09:44:05,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:05,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:05,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:05,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:44:05,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:05,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -602311999, now seen corresponding path program 3 times [2023-01-28 09:44:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:05,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690290955] [2023-01-28 09:44:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:05,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:05,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:05,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690290955] [2023-01-28 09:44:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690290955] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:05,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:05,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:44:05,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399670598] [2023-01-28 09:44:05,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:05,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:44:05,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:05,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:44:05,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:44:05,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-01-28 09:44:05,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 99 transitions, 1193 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:05,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:05,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-01-28 09:44:05,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:05,314 INFO L130 PetriNetUnfolder]: 568/983 cut-off events. [2023-01-28 09:44:05,315 INFO L131 PetriNetUnfolder]: For 11208/11208 co-relation queries the response was YES. [2023-01-28 09:44:05,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 983 events. 568/983 cut-off events. For 11208/11208 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4232 event pairs, 8 based on Foata normal form. 40/1023 useless extension candidates. Maximal degree in co-relation 5213. Up to 472 conditions per place. [2023-01-28 09:44:05,322 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 97 selfloop transitions, 42 changer transitions 35/174 dead transitions. [2023-01-28 09:44:05,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 174 transitions, 2309 flow [2023-01-28 09:44:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:44:05,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:44:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 790 transitions. [2023-01-28 09:44:05,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49873737373737376 [2023-01-28 09:44:05,324 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 790 transitions. [2023-01-28 09:44:05,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 790 transitions. [2023-01-28 09:44:05,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:05,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 790 transitions. [2023-01-28 09:44:05,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.77777777777777) internal successors, (790), 9 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:05,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:05,327 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:05,328 INFO L175 Difference]: Start difference. First operand has 71 places, 99 transitions, 1193 flow. Second operand 9 states and 790 transitions. [2023-01-28 09:44:05,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 174 transitions, 2309 flow [2023-01-28 09:44:05,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 174 transitions, 2191 flow, removed 59 selfloop flow, removed 0 redundant places. [2023-01-28 09:44:05,355 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 1387 flow [2023-01-28 09:44:05,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1387, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2023-01-28 09:44:05,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2023-01-28 09:44:05,356 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 1387 flow [2023-01-28 09:44:05,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:05,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:05,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:05,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:44:05,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:05,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2082278653, now seen corresponding path program 4 times [2023-01-28 09:44:05,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:05,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804952195] [2023-01-28 09:44:05,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:05,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:05,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:05,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804952195] [2023-01-28 09:44:05,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804952195] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:44:05,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:44:05,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:44:05,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218309731] [2023-01-28 09:44:05,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:44:05,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:44:05,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:05,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:44:05,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:44:05,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-01-28 09:44:05,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 1387 flow. Second operand has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:05,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:05,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-01-28 09:44:05,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:06,131 INFO L130 PetriNetUnfolder]: 520/947 cut-off events. [2023-01-28 09:44:06,131 INFO L131 PetriNetUnfolder]: For 11942/11942 co-relation queries the response was YES. [2023-01-28 09:44:06,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6211 conditions, 947 events. 520/947 cut-off events. For 11942/11942 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4335 event pairs, 40 based on Foata normal form. 20/967 useless extension candidates. Maximal degree in co-relation 4956. Up to 665 conditions per place. [2023-01-28 09:44:06,141 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 110 selfloop transitions, 13 changer transitions 60/183 dead transitions. [2023-01-28 09:44:06,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 183 transitions, 2696 flow [2023-01-28 09:44:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:44:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:44:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 792 transitions. [2023-01-28 09:44:06,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-01-28 09:44:06,144 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 792 transitions. [2023-01-28 09:44:06,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 792 transitions. [2023-01-28 09:44:06,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:06,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 792 transitions. [2023-01-28 09:44:06,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.2) internal successors, (792), 10 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:06,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:06,150 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:06,150 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 1387 flow. Second operand 10 states and 792 transitions. [2023-01-28 09:44:06,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 183 transitions, 2696 flow [2023-01-28 09:44:06,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 183 transitions, 2595 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-01-28 09:44:06,191 INFO L231 Difference]: Finished difference. Result has 96 places, 110 transitions, 1505 flow [2023-01-28 09:44:06,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1505, PETRI_PLACES=96, PETRI_TRANSITIONS=110} [2023-01-28 09:44:06,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2023-01-28 09:44:06,192 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 110 transitions, 1505 flow [2023-01-28 09:44:06,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:06,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:06,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:06,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:44:06,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:06,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash 253493268, now seen corresponding path program 1 times [2023-01-28 09:44:06,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:06,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097866892] [2023-01-28 09:44:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:06,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:06,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:06,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097866892] [2023-01-28 09:44:06,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097866892] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:06,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54380405] [2023-01-28 09:44:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:06,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:06,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:06,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:06,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:44:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:06,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 09:44:06,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:06,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54380405] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:06,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:06,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-28 09:44:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589228253] [2023-01-28 09:44:06,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:06,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:44:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:44:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:44:06,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-01-28 09:44:06,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 110 transitions, 1505 flow. Second operand has 13 states, 13 states have (on average 75.38461538461539) internal successors, (980), 13 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:06,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:06,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-01-28 09:44:06,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:07,550 INFO L130 PetriNetUnfolder]: 948/1653 cut-off events. [2023-01-28 09:44:07,551 INFO L131 PetriNetUnfolder]: For 22613/22613 co-relation queries the response was YES. [2023-01-28 09:44:07,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11303 conditions, 1653 events. 948/1653 cut-off events. For 22613/22613 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8373 event pairs, 19 based on Foata normal form. 64/1717 useless extension candidates. Maximal degree in co-relation 10479. Up to 497 conditions per place. [2023-01-28 09:44:07,562 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 134 selfloop transitions, 80 changer transitions 149/363 dead transitions. [2023-01-28 09:44:07,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 363 transitions, 5409 flow [2023-01-28 09:44:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 09:44:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 09:44:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1671 transitions. [2023-01-28 09:44:07,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45211038961038963 [2023-01-28 09:44:07,565 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1671 transitions. [2023-01-28 09:44:07,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1671 transitions. [2023-01-28 09:44:07,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:07,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1671 transitions. [2023-01-28 09:44:07,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 79.57142857142857) internal successors, (1671), 21 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:07,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:07,572 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:07,572 INFO L175 Difference]: Start difference. First operand has 96 places, 110 transitions, 1505 flow. Second operand 21 states and 1671 transitions. [2023-01-28 09:44:07,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 363 transitions, 5409 flow [2023-01-28 09:44:07,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 363 transitions, 5165 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-01-28 09:44:07,630 INFO L231 Difference]: Finished difference. Result has 112 places, 158 transitions, 2470 flow [2023-01-28 09:44:07,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2470, PETRI_PLACES=112, PETRI_TRANSITIONS=158} [2023-01-28 09:44:07,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2023-01-28 09:44:07,630 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 158 transitions, 2470 flow [2023-01-28 09:44:07,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 75.38461538461539) internal successors, (980), 13 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:07,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:07,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:07,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 09:44:07,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 09:44:07,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:07,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:07,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1905524860, now seen corresponding path program 5 times [2023-01-28 09:44:07,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:07,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788625604] [2023-01-28 09:44:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:07,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:08,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:08,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788625604] [2023-01-28 09:44:08,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788625604] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:08,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856156165] [2023-01-28 09:44:08,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:44:08,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:08,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:08,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:08,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:44:08,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 09:44:08,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:08,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 09:44:08,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:08,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856156165] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:08,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:08,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2023-01-28 09:44:08,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573168726] [2023-01-28 09:44:08,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:08,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 09:44:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:08,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 09:44:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-01-28 09:44:08,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 176 [2023-01-28 09:44:08,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 158 transitions, 2470 flow. Second operand has 19 states, 19 states have (on average 72.36842105263158) internal successors, (1375), 19 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:08,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:08,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 176 [2023-01-28 09:44:08,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:09,996 INFO L130 PetriNetUnfolder]: 1185/2014 cut-off events. [2023-01-28 09:44:09,996 INFO L131 PetriNetUnfolder]: For 31987/31987 co-relation queries the response was YES. [2023-01-28 09:44:10,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15187 conditions, 2014 events. 1185/2014 cut-off events. For 31987/31987 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9921 event pairs, 16 based on Foata normal form. 102/2116 useless extension candidates. Maximal degree in co-relation 13913. Up to 691 conditions per place. [2023-01-28 09:44:10,014 INFO L137 encePairwiseOnDemand]: 166/176 looper letters, 146 selfloop transitions, 143 changer transitions 198/487 dead transitions. [2023-01-28 09:44:10,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 487 transitions, 8128 flow [2023-01-28 09:44:10,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-28 09:44:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-28 09:44:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3543 transitions. [2023-01-28 09:44:10,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42831237911025144 [2023-01-28 09:44:10,020 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3543 transitions. [2023-01-28 09:44:10,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3543 transitions. [2023-01-28 09:44:10,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:10,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3543 transitions. [2023-01-28 09:44:10,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 75.38297872340425) internal successors, (3543), 47 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:10,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 176.0) internal successors, (8448), 48 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:10,035 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 176.0) internal successors, (8448), 48 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:10,035 INFO L175 Difference]: Start difference. First operand has 112 places, 158 transitions, 2470 flow. Second operand 47 states and 3543 transitions. [2023-01-28 09:44:10,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 487 transitions, 8128 flow [2023-01-28 09:44:10,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 487 transitions, 7271 flow, removed 371 selfloop flow, removed 9 redundant places. [2023-01-28 09:44:10,142 INFO L231 Difference]: Finished difference. Result has 174 places, 216 transitions, 3685 flow [2023-01-28 09:44:10,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3685, PETRI_PLACES=174, PETRI_TRANSITIONS=216} [2023-01-28 09:44:10,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2023-01-28 09:44:10,143 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 216 transitions, 3685 flow [2023-01-28 09:44:10,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 72.36842105263158) internal successors, (1375), 19 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:10,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:10,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:10,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 09:44:10,348 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,SelfDestructingSolverStorable10 [2023-01-28 09:44:10,348 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:10,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1067501500, now seen corresponding path program 1 times [2023-01-28 09:44:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:10,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233490555] [2023-01-28 09:44:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:10,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233490555] [2023-01-28 09:44:10,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233490555] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:10,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481064564] [2023-01-28 09:44:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:10,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:10,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:10,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:10,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:44:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:10,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:44:10,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:11,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481064564] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:11,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:11,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-01-28 09:44:11,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659630079] [2023-01-28 09:44:11,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:11,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 09:44:11,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:11,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 09:44:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-01-28 09:44:11,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 176 [2023-01-28 09:44:11,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 216 transitions, 3685 flow. Second operand has 21 states, 21 states have (on average 69.66666666666667) internal successors, (1463), 21 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:11,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:11,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 176 [2023-01-28 09:44:11,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:13,816 INFO L130 PetriNetUnfolder]: 1829/3082 cut-off events. [2023-01-28 09:44:13,817 INFO L131 PetriNetUnfolder]: For 68841/68841 co-relation queries the response was YES. [2023-01-28 09:44:13,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25918 conditions, 3082 events. 1829/3082 cut-off events. For 68841/68841 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16493 event pairs, 23 based on Foata normal form. 120/3202 useless extension candidates. Maximal degree in co-relation 25204. Up to 1023 conditions per place. [2023-01-28 09:44:13,853 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 256 selfloop transitions, 259 changer transitions 186/701 dead transitions. [2023-01-28 09:44:13,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 701 transitions, 12350 flow [2023-01-28 09:44:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-28 09:44:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-28 09:44:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 4938 transitions. [2023-01-28 09:44:13,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41260026737967914 [2023-01-28 09:44:13,863 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 4938 transitions. [2023-01-28 09:44:13,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 4938 transitions. [2023-01-28 09:44:13,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:13,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 4938 transitions. [2023-01-28 09:44:13,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 72.61764705882354) internal successors, (4938), 68 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:13,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 176.0) internal successors, (12144), 69 states have internal predecessors, (12144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:13,900 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 176.0) internal successors, (12144), 69 states have internal predecessors, (12144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:13,900 INFO L175 Difference]: Start difference. First operand has 174 places, 216 transitions, 3685 flow. Second operand 68 states and 4938 transitions. [2023-01-28 09:44:13,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 701 transitions, 12350 flow [2023-01-28 09:44:14,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 701 transitions, 9911 flow, removed 1085 selfloop flow, removed 32 redundant places. [2023-01-28 09:44:14,411 INFO L231 Difference]: Finished difference. Result has 202 places, 351 transitions, 5717 flow [2023-01-28 09:44:14,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2942, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=5717, PETRI_PLACES=202, PETRI_TRANSITIONS=351} [2023-01-28 09:44:14,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-01-28 09:44:14,411 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 351 transitions, 5717 flow [2023-01-28 09:44:14,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 69.66666666666667) internal successors, (1463), 21 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:14,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:14,413 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:14,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 09:44:14,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:14,618 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:14,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1270924035, now seen corresponding path program 2 times [2023-01-28 09:44:14,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:14,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92669265] [2023-01-28 09:44:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:14,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:15,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92669265] [2023-01-28 09:44:15,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92669265] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953835584] [2023-01-28 09:44:15,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:44:15,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:15,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:15,199 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) [2023-01-28 09:44:15,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:44:15,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:44:15,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:15,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 09:44:15,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:15,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:15,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953835584] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:15,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:15,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2023-01-28 09:44:15,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658040893] [2023-01-28 09:44:15,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 09:44:15,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 09:44:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-01-28 09:44:15,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-01-28 09:44:15,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 351 transitions, 5717 flow. Second operand has 20 states, 20 states have (on average 67.9) internal successors, (1358), 20 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:15,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:15,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-01-28 09:44:15,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:19,070 INFO L130 PetriNetUnfolder]: 2687/4460 cut-off events. [2023-01-28 09:44:19,071 INFO L131 PetriNetUnfolder]: For 58844/58844 co-relation queries the response was YES. [2023-01-28 09:44:19,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34169 conditions, 4460 events. 2687/4460 cut-off events. For 58844/58844 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 25106 event pairs, 33 based on Foata normal form. 212/4672 useless extension candidates. Maximal degree in co-relation 33829. Up to 1507 conditions per place. [2023-01-28 09:44:19,101 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 310 selfloop transitions, 344 changer transitions 344/998 dead transitions. [2023-01-28 09:44:19,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 998 transitions, 17579 flow [2023-01-28 09:44:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-01-28 09:44:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-01-28 09:44:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 5408 transitions. [2023-01-28 09:44:19,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990554899645809 [2023-01-28 09:44:19,108 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 5408 transitions. [2023-01-28 09:44:19,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 5408 transitions. [2023-01-28 09:44:19,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:19,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 5408 transitions. [2023-01-28 09:44:19,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 70.23376623376623) internal successors, (5408), 77 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:19,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 176.0) internal successors, (13728), 78 states have internal predecessors, (13728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:19,125 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 176.0) internal successors, (13728), 78 states have internal predecessors, (13728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:19,125 INFO L175 Difference]: Start difference. First operand has 202 places, 351 transitions, 5717 flow. Second operand 77 states and 5408 transitions. [2023-01-28 09:44:19,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 998 transitions, 17579 flow [2023-01-28 09:44:19,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 998 transitions, 15666 flow, removed 932 selfloop flow, removed 24 redundant places. [2023-01-28 09:44:19,551 INFO L231 Difference]: Finished difference. Result has 266 places, 525 transitions, 8783 flow [2023-01-28 09:44:19,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=8783, PETRI_PLACES=266, PETRI_TRANSITIONS=525} [2023-01-28 09:44:19,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2023-01-28 09:44:19,552 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 525 transitions, 8783 flow [2023-01-28 09:44:19,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 67.9) internal successors, (1358), 20 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:19,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:19,552 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:19,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 09:44:19,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:19,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:19,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1435905026, now seen corresponding path program 3 times [2023-01-28 09:44:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:19,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196462240] [2023-01-28 09:44:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:19,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:20,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196462240] [2023-01-28 09:44:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196462240] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:20,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103974487] [2023-01-28 09:44:20,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:44:20,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:20,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:20,206 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) [2023-01-28 09:44:20,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:44:20,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 09:44:20,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:20,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 09:44:20,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:20,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103974487] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:20,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-01-28 09:44:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549997922] [2023-01-28 09:44:20,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:20,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 09:44:20,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:20,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 09:44:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2023-01-28 09:44:20,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-01-28 09:44:20,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 525 transitions, 8783 flow. Second operand has 27 states, 27 states have (on average 67.37037037037037) internal successors, (1819), 27 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:20,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:20,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-01-28 09:44:20,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:27,832 INFO L130 PetriNetUnfolder]: 5896/9829 cut-off events. [2023-01-28 09:44:27,832 INFO L131 PetriNetUnfolder]: For 198182/198182 co-relation queries the response was YES. [2023-01-28 09:44:27,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81839 conditions, 9829 events. 5896/9829 cut-off events. For 198182/198182 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 64653 event pairs, 57 based on Foata normal form. 396/10225 useless extension candidates. Maximal degree in co-relation 80569. Up to 3049 conditions per place. [2023-01-28 09:44:27,920 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 482 selfloop transitions, 1065 changer transitions 674/2221 dead transitions. [2023-01-28 09:44:27,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 2221 transitions, 40921 flow [2023-01-28 09:44:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-01-28 09:44:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2023-01-28 09:44:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 10143 transitions. [2023-01-28 09:44:27,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002130681818182 [2023-01-28 09:44:27,936 INFO L72 ComplementDD]: Start complementDD. Operand 144 states and 10143 transitions. [2023-01-28 09:44:27,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 10143 transitions. [2023-01-28 09:44:27,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:27,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 144 states and 10143 transitions. [2023-01-28 09:44:27,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 145 states, 144 states have (on average 70.4375) internal successors, (10143), 144 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:27,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 145 states, 145 states have (on average 176.0) internal successors, (25520), 145 states have internal predecessors, (25520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:27,981 INFO L81 ComplementDD]: Finished complementDD. Result has 145 states, 145 states have (on average 176.0) internal successors, (25520), 145 states have internal predecessors, (25520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:27,982 INFO L175 Difference]: Start difference. First operand has 266 places, 525 transitions, 8783 flow. Second operand 144 states and 10143 transitions. [2023-01-28 09:44:27,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 2221 transitions, 40921 flow [2023-01-28 09:44:29,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 2221 transitions, 35813 flow, removed 1693 selfloop flow, removed 33 redundant places. [2023-01-28 09:44:30,007 INFO L231 Difference]: Finished difference. Result has 391 places, 1219 transitions, 22356 flow [2023-01-28 09:44:30,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=7640, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=144, PETRI_FLOW=22356, PETRI_PLACES=391, PETRI_TRANSITIONS=1219} [2023-01-28 09:44:30,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2023-01-28 09:44:30,008 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 1219 transitions, 22356 flow [2023-01-28 09:44:30,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 67.37037037037037) internal successors, (1819), 27 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:30,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:30,008 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:30,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 09:44:30,212 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,SelfDestructingSolverStorable13 [2023-01-28 09:44:30,213 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:30,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:30,213 INFO L85 PathProgramCache]: Analyzing trace with hash -832080362, now seen corresponding path program 4 times [2023-01-28 09:44:30,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:30,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663998394] [2023-01-28 09:44:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:30,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:30,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:30,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663998394] [2023-01-28 09:44:30,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663998394] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:30,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058210560] [2023-01-28 09:44:30,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:44:30,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:30,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:30,644 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) [2023-01-28 09:44:30,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 09:44:30,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:44:30,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:30,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 09:44:30,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:31,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:31,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058210560] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:31,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:31,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-01-28 09:44:31,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434810344] [2023-01-28 09:44:31,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:31,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 09:44:31,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:31,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 09:44:31,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-01-28 09:44:31,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 176 [2023-01-28 09:44:31,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 1219 transitions, 22356 flow. Second operand has 26 states, 26 states have (on average 69.46153846153847) internal successors, (1806), 26 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:31,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:31,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 176 [2023-01-28 09:44:31,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:42,097 INFO L130 PetriNetUnfolder]: 11640/20155 cut-off events. [2023-01-28 09:44:42,098 INFO L131 PetriNetUnfolder]: For 896069/896069 co-relation queries the response was YES. [2023-01-28 09:44:42,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187382 conditions, 20155 events. 11640/20155 cut-off events. For 896069/896069 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 156978 event pairs, 169 based on Foata normal form. 552/20707 useless extension candidates. Maximal degree in co-relation 187036. Up to 5375 conditions per place. [2023-01-28 09:44:42,422 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 993 selfloop transitions, 1792 changer transitions 1069/3854 dead transitions. [2023-01-28 09:44:42,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 3854 transitions, 77758 flow [2023-01-28 09:44:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-01-28 09:44:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-01-28 09:44:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 9279 transitions. [2023-01-28 09:44:42,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4184253246753247 [2023-01-28 09:44:42,436 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 9279 transitions. [2023-01-28 09:44:42,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 9279 transitions. [2023-01-28 09:44:42,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:42,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 9279 transitions. [2023-01-28 09:44:42,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 73.64285714285714) internal successors, (9279), 126 states have internal predecessors, (9279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:42,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 176.0) internal successors, (22352), 127 states have internal predecessors, (22352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:42,473 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 176.0) internal successors, (22352), 127 states have internal predecessors, (22352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:42,474 INFO L175 Difference]: Start difference. First operand has 391 places, 1219 transitions, 22356 flow. Second operand 126 states and 9279 transitions. [2023-01-28 09:44:42,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 3854 transitions, 77758 flow [2023-01-28 09:44:55,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 3854 transitions, 64129 flow, removed 5255 selfloop flow, removed 57 redundant places. [2023-01-28 09:44:55,819 INFO L231 Difference]: Finished difference. Result has 456 places, 2341 transitions, 43792 flow [2023-01-28 09:44:55,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=18792, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=838, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=43792, PETRI_PLACES=456, PETRI_TRANSITIONS=2341} [2023-01-28 09:44:55,822 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2023-01-28 09:44:55,822 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 2341 transitions, 43792 flow [2023-01-28 09:44:55,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 69.46153846153847) internal successors, (1806), 26 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:55,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:55,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:55,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 09:44:56,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 09:44:56,039 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:44:56,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash 50510264, now seen corresponding path program 5 times [2023-01-28 09:44:56,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:56,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552950562] [2023-01-28 09:44:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:56,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:56,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:56,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552950562] [2023-01-28 09:44:56,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552950562] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:56,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003231378] [2023-01-28 09:44:56,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:44:56,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:56,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:56,707 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) [2023-01-28 09:44:56,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 09:44:56,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 09:44:56,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:56,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 09:44:56,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:57,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:57,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003231378] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:57,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:57,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-01-28 09:44:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827953875] [2023-01-28 09:44:57,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:57,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 09:44:57,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:57,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 09:44:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-01-28 09:44:57,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-01-28 09:44:57,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 2341 transitions, 43792 flow. Second operand has 30 states, 30 states have (on average 66.9) internal successors, (2007), 30 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:44:57,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:57,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-01-28 09:44:57,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:45:17,317 INFO L130 PetriNetUnfolder]: 16977/28782 cut-off events. [2023-01-28 09:45:17,317 INFO L131 PetriNetUnfolder]: For 701984/701984 co-relation queries the response was YES. [2023-01-28 09:45:17,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250301 conditions, 28782 events. 16977/28782 cut-off events. For 701984/701984 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 229997 event pairs, 246 based on Foata normal form. 656/29438 useless extension candidates. Maximal degree in co-relation 250115. Up to 7251 conditions per place. [2023-01-28 09:45:17,802 INFO L137 encePairwiseOnDemand]: 166/176 looper letters, 1569 selfloop transitions, 2813 changer transitions 925/5307 dead transitions. [2023-01-28 09:45:17,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 5307 transitions, 106837 flow [2023-01-28 09:45:17,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2023-01-28 09:45:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2023-01-28 09:45:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 13524 transitions. [2023-01-28 09:45:17,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39608716026241797 [2023-01-28 09:45:17,823 INFO L72 ComplementDD]: Start complementDD. Operand 194 states and 13524 transitions. [2023-01-28 09:45:17,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 194 states and 13524 transitions. [2023-01-28 09:45:17,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:45:17,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 194 states and 13524 transitions. [2023-01-28 09:45:17,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 195 states, 194 states have (on average 69.71134020618557) internal successors, (13524), 194 states have internal predecessors, (13524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:45:17,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 195 states, 195 states have (on average 176.0) internal successors, (34320), 195 states have internal predecessors, (34320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:45:17,860 INFO L81 ComplementDD]: Finished complementDD. Result has 195 states, 195 states have (on average 176.0) internal successors, (34320), 195 states have internal predecessors, (34320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:45:17,860 INFO L175 Difference]: Start difference. First operand has 456 places, 2341 transitions, 43792 flow. Second operand 194 states and 13524 transitions. [2023-01-28 09:45:17,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 5307 transitions, 106837 flow [2023-01-28 09:45:39,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 5307 transitions, 102795 flow, removed 1931 selfloop flow, removed 50 redundant places. [2023-01-28 09:45:39,594 INFO L231 Difference]: Finished difference. Result has 682 places, 4036 transitions, 84330 flow [2023-01-28 09:45:39,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=41936, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=194, PETRI_FLOW=84330, PETRI_PLACES=682, PETRI_TRANSITIONS=4036} [2023-01-28 09:45:39,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 652 predicate places. [2023-01-28 09:45:39,597 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 4036 transitions, 84330 flow [2023-01-28 09:45:39,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 66.9) internal successors, (2007), 30 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:45:39,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:45:39,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:45:39,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 09:45:39,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:45:39,804 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:45:39,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:45:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2043538846, now seen corresponding path program 6 times [2023-01-28 09:45:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:45:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070605192] [2023-01-28 09:45:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:45:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:45:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:45:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:40,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:45:40,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070605192] [2023-01-28 09:45:40,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070605192] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:45:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360059171] [2023-01-28 09:45:40,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:45:40,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:45:40,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:45:40,076 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) [2023-01-28 09:45:40,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 09:45:40,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 09:45:40,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:45:40,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 09:45:40,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:45:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:40,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:45:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:45:40,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360059171] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:45:40,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:45:40,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-01-28 09:45:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734986588] [2023-01-28 09:45:40,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:45:40,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 09:45:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:45:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 09:45:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-01-28 09:45:40,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-01-28 09:45:40,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 4036 transitions, 84330 flow. Second operand has 27 states, 27 states have (on average 67.4074074074074) internal successors, (1820), 27 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:45:40,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:45:40,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-01-28 09:45:40,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:46:30,864 INFO L130 PetriNetUnfolder]: 33146/56275 cut-off events. [2023-01-28 09:46:30,864 INFO L131 PetriNetUnfolder]: For 2995492/2995492 co-relation queries the response was YES. [2023-01-28 09:46:32,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565509 conditions, 56275 events. 33146/56275 cut-off events. For 2995492/2995492 co-relation queries the response was YES. Maximal size of possible extension queue 2784. Compared 496108 event pairs, 464 based on Foata normal form. 2436/58711 useless extension candidates. Maximal degree in co-relation 565201. Up to 14147 conditions per place. [2023-01-28 09:46:33,034 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 1582 selfloop transitions, 5908 changer transitions 3329/10819 dead transitions. [2023-01-28 09:46:33,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 10819 transitions, 247973 flow [2023-01-28 09:46:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-01-28 09:46:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2023-01-28 09:46:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 12951 transitions. [2023-01-28 09:46:33,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977579852579853 [2023-01-28 09:46:33,058 INFO L72 ComplementDD]: Start complementDD. Operand 185 states and 12951 transitions. [2023-01-28 09:46:33,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 12951 transitions. [2023-01-28 09:46:33,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:46:33,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 185 states and 12951 transitions. [2023-01-28 09:46:33,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 186 states, 185 states have (on average 70.00540540540541) internal successors, (12951), 185 states have internal predecessors, (12951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:46:33,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 186 states, 186 states have (on average 176.0) internal successors, (32736), 186 states have internal predecessors, (32736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:46:33,089 INFO L81 ComplementDD]: Finished complementDD. Result has 186 states, 186 states have (on average 176.0) internal successors, (32736), 186 states have internal predecessors, (32736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:46:33,089 INFO L175 Difference]: Start difference. First operand has 682 places, 4036 transitions, 84330 flow. Second operand 185 states and 12951 transitions. [2023-01-28 09:46:33,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 10819 transitions, 247973 flow [2023-01-28 09:48:29,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 10819 transitions, 239044 flow, removed 3939 selfloop flow, removed 99 redundant places. [2023-01-28 09:48:29,473 INFO L231 Difference]: Finished difference. Result has 762 places, 6952 transitions, 160969 flow [2023-01-28 09:48:29,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=80534, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3087, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=185, PETRI_FLOW=160969, PETRI_PLACES=762, PETRI_TRANSITIONS=6952} [2023-01-28 09:48:29,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 732 predicate places. [2023-01-28 09:48:29,477 INFO L495 AbstractCegarLoop]: Abstraction has has 762 places, 6952 transitions, 160969 flow [2023-01-28 09:48:29,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 67.4074074074074) internal successors, (1820), 27 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:48:29,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:48:29,477 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:48:29,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 09:48:29,681 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,SelfDestructingSolverStorable16 [2023-01-28 09:48:29,682 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:48:29,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:48:29,682 INFO L85 PathProgramCache]: Analyzing trace with hash -887681577, now seen corresponding path program 7 times [2023-01-28 09:48:29,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:48:29,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082011037] [2023-01-28 09:48:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:48:29,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:48:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:48:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:48:30,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082011037] [2023-01-28 09:48:30,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082011037] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:48:30,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523768355] [2023-01-28 09:48:30,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:48:30,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:48:30,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:48:30,198 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) [2023-01-28 09:48:30,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 09:48:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:48:30,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 09:48:30,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:48:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:30,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:48:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:48:31,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523768355] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:48:31,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:48:31,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 31 [2023-01-28 09:48:31,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336599225] [2023-01-28 09:48:31,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:48:31,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 09:48:31,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:48:31,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 09:48:31,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2023-01-28 09:48:31,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 176 [2023-01-28 09:48:31,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 6952 transitions, 160969 flow. Second operand has 32 states, 32 states have (on average 69.125) internal successors, (2212), 32 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:48:31,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:48:31,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 176 [2023-01-28 09:48:31,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:50:53,723 INFO L130 PetriNetUnfolder]: 50278/85141 cut-off events. [2023-01-28 09:50:53,724 INFO L131 PetriNetUnfolder]: For 8525254/8525254 co-relation queries the response was YES. [2023-01-28 09:50:57,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036340 conditions, 85141 events. 50278/85141 cut-off events. For 8525254/8525254 co-relation queries the response was YES. Maximal size of possible extension queue 3713. Compared 783678 event pairs, 857 based on Foata normal form. 2116/87257 useless extension candidates. Maximal degree in co-relation 1035970. Up to 24202 conditions per place. [2023-01-28 09:50:57,555 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 5068 selfloop transitions, 6422 changer transitions 3266/14756 dead transitions. [2023-01-28 09:50:57,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 844 places, 14756 transitions, 375185 flow [2023-01-28 09:50:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-01-28 09:50:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2023-01-28 09:50:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 12924 transitions. [2023-01-28 09:50:57,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412538304392237 [2023-01-28 09:50:57,565 INFO L72 ComplementDD]: Start complementDD. Operand 178 states and 12924 transitions. [2023-01-28 09:50:57,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 12924 transitions. [2023-01-28 09:50:57,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:50:57,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 178 states and 12924 transitions. [2023-01-28 09:50:57,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 179 states, 178 states have (on average 72.6067415730337) internal successors, (12924), 178 states have internal predecessors, (12924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:50:57,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 179 states, 179 states have (on average 176.0) internal successors, (31504), 179 states have internal predecessors, (31504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:50:57,600 INFO L81 ComplementDD]: Finished complementDD. Result has 179 states, 179 states have (on average 176.0) internal successors, (31504), 179 states have internal predecessors, (31504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:50:57,600 INFO L175 Difference]: Start difference. First operand has 762 places, 6952 transitions, 160969 flow. Second operand 178 states and 12924 transitions. [2023-01-28 09:50:57,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 844 places, 14756 transitions, 375185 flow Received shutdown request... [2023-01-28 09:57:56,011 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:57:56,013 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:57:56,868 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:57:56,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 09:57:57,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 09:57:57,073 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,SelfDestructingSolverStorable17 [2023-01-28 09:57:57,073 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 09:57:57,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:57:57,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:57:57,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:57:57,075 INFO L445 BasicCegarLoop]: Path program histogram: [7, 5, 5, 1] [2023-01-28 09:57:57,077 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:57:57,077 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:57:57,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:57:57 BasicIcfg [2023-01-28 09:57:57,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:57:57,079 INFO L158 Benchmark]: Toolchain (without parser) took 838715.56ms. Allocated memory was 394.3MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 353.2MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. [2023-01-28 09:57:57,079 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:57:57,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.73ms. Allocated memory is still 394.3MB. Free memory was 353.2MB in the beginning and 342.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:57:57,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.18ms. Allocated memory is still 394.3MB. Free memory was 342.0MB in the beginning and 340.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:57:57,080 INFO L158 Benchmark]: Boogie Preprocessor took 33.74ms. Allocated memory is still 394.3MB. Free memory was 340.4MB in the beginning and 338.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:57:57,080 INFO L158 Benchmark]: RCFGBuilder took 413.96ms. Allocated memory is still 394.3MB. Free memory was 338.9MB in the beginning and 323.8MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 09:57:57,080 INFO L158 Benchmark]: TraceAbstraction took 838005.50ms. Allocated memory was 394.3MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 323.2MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. [2023-01-28 09:57:57,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 223.73ms. Allocated memory is still 394.3MB. Free memory was 353.2MB in the beginning and 342.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.18ms. Allocated memory is still 394.3MB. Free memory was 342.0MB in the beginning and 340.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.74ms. Allocated memory is still 394.3MB. Free memory was 340.4MB in the beginning and 338.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 413.96ms. Allocated memory is still 394.3MB. Free memory was 338.9MB in the beginning and 323.8MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 838005.50ms. Allocated memory was 394.3MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 323.2MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 93 PlacesBefore, 30 PlacesAfterwards, 90 TransitionsBefore, 22 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 1280 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1135, independent: 1109, independent conditional: 0, independent unconditional: 1109, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 557, independent: 552, independent conditional: 0, independent unconditional: 552, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1135, independent: 557, independent conditional: 0, independent unconditional: 557, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 557, unknown conditional: 0, unknown unconditional: 557] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 124 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 837.9s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 821.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6567 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6567 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18156 IncrementalHoareTripleChecker+Invalid, 18828 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 672 mSolverCounterUnsat, 12 mSDtfsCounter, 18156 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1546 GetRequests, 310 SyntacticMatches, 17 SemanticMatches, 1219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78743 ImplicationChecksByTransitivity, 29.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160969occurred in iteration=17, InterpolantAutomatonStates: 926, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 614 NumberOfCodeBlocks, 614 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 800 ConstructedInterpolants, 14 QuantifiedInterpolants, 9855 SizeOfPredicates, 85 NumberOfNonLiveVariables, 1530 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 36 InterpolantComputations, 9 PerfectInterpolantSequences, 42/184 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