/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 23:28:01,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 23:28:01,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 23:28:01,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 23:28:01,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 23:28:01,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 23:28:01,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 23:28:01,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 23:28:01,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 23:28:01,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 23:28:01,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 23:28:01,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 23:28:01,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 23:28:01,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 23:28:01,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 23:28:01,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 23:28:01,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 23:28:01,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 23:28:01,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 23:28:01,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 23:28:01,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 23:28:01,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 23:28:01,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 23:28:01,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 23:28:01,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 23:28:01,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 23:28:01,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 23:28:01,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 23:28:01,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 23:28:01,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 23:28:01,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 23:28:01,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 23:28:01,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 23:28:01,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 23:28:01,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 23:28:01,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 23:28:01,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 23:28:01,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 23:28:01,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 23:28:01,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 23:28:01,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 23:28:01,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 23:28:01,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 23:28:01,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 23:28:01,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 23:28:01,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 23:28:01,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 23:28:01,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 23:28:01,893 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 23:28:01,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 23:28:01,893 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 23:28:01,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 23:28:01,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 23:28:01,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 23:28:01,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 23:28:01,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 23:28:01,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 23:28:01,895 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 23:28:01,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 23:28:01,895 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 23:28:01,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 23:28:01,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 23:28:01,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 23:28:01,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:28:01,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 23:28:01,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-11 23:28:02,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 23:28:02,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 23:28:02,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 23:28:02,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 23:28:02,162 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 23:28:02,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2022-12-11 23:28:03,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 23:28:03,394 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 23:28:03,395 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2022-12-11 23:28:03,403 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe1b4384/bc2c08d724ca4bd4b49411e4f4b6d7f2/FLAG2271ccd2e [2022-12-11 23:28:03,414 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe1b4384/bc2c08d724ca4bd4b49411e4f4b6d7f2 [2022-12-11 23:28:03,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 23:28:03,417 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 23:28:03,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 23:28:03,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 23:28:03,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 23:28:03,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771df0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03, skipping insertion in model container [2022-12-11 23:28:03,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 23:28:03,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 23:28:03,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:28:03,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:28:03,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:28:03,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:28:03,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:28:03,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:28:03,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:28:03,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:28:03,701 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2022-12-11 23:28:03,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:28:03,711 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 23:28:03,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:28:03,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:28:03,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:28:03,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:28:03,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:28:03,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:28:03,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:28:03,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:28:03,748 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2022-12-11 23:28:03,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:28:03,777 INFO L208 MainTranslator]: Completed translation [2022-12-11 23:28:03,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03 WrapperNode [2022-12-11 23:28:03,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 23:28:03,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 23:28:03,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 23:28:03,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 23:28:03,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,821 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-11 23:28:03,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 23:28:03,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 23:28:03,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 23:28:03,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 23:28:03,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 23:28:03,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 23:28:03,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 23:28:03,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 23:28:03,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (1/1) ... [2022-12-11 23:28:03,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:28:03,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:03,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 23:28:03,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 23:28:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 23:28:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 23:28:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 23:28:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 23:28:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 23:28:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 23:28:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 23:28:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 23:28:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 23:28:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 23:28:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 23:28:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 23:28:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 23:28:03,917 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 23:28:04,023 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 23:28:04,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 23:28:04,152 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 23:28:04,164 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 23:28:04,164 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-11 23:28:04,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:28:04 BoogieIcfgContainer [2022-12-11 23:28:04,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 23:28:04,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 23:28:04,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 23:28:04,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 23:28:04,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 11:28:03" (1/3) ... [2022-12-11 23:28:04,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4821a140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:28:04, skipping insertion in model container [2022-12-11 23:28:04,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:28:03" (2/3) ... [2022-12-11 23:28:04,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4821a140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:28:04, skipping insertion in model container [2022-12-11 23:28:04,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:28:04" (3/3) ... [2022-12-11 23:28:04,172 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2022-12-11 23:28:04,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 23:28:04,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 23:28:04,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 23:28:04,234 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 23:28:04,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2022-12-11 23:28:04,326 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-11 23:28:04,326 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 23:28:04,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-11 23:28:04,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2022-12-11 23:28:04,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2022-12-11 23:28:04,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:28:04,352 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;@1563e5d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:28:04,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 23:28:04,371 INFO L130 PetriNetUnfolder]: 4/54 cut-off events. [2022-12-11 23:28:04,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 23:28:04,371 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:04,372 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:04,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash -869864902, now seen corresponding path program 1 times [2022-12-11 23:28:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:04,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120237805] [2022-12-11 23:28:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:04,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:04,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120237805] [2022-12-11 23:28:04,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120237805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:28:04,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:28:04,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:28:04,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458849490] [2022-12-11 23:28:04,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:28:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:28:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:28:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:28:04,877 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:04,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:04,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:04,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:04,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:05,031 INFO L130 PetriNetUnfolder]: 46/204 cut-off events. [2022-12-11 23:28:05,032 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 23:28:05,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 204 events. 46/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 790 event pairs, 3 based on Foata normal form. 49/233 useless extension candidates. Maximal degree in co-relation 259. Up to 32 conditions per place. [2022-12-11 23:28:05,034 INFO L137 encePairwiseOnDemand]: 55/66 looper letters, 14 selfloop transitions, 9 changer transitions 23/88 dead transitions. [2022-12-11 23:28:05,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 263 flow [2022-12-11 23:28:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 23:28:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 23:28:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2022-12-11 23:28:05,052 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8681818181818182 [2022-12-11 23:28:05,057 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2022-12-11 23:28:05,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 88 transitions, 263 flow [2022-12-11 23:28:05,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 65 transitions, 185 flow [2022-12-11 23:28:05,061 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 185 flow [2022-12-11 23:28:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,062 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:05,062 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:05,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 23:28:05,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:05,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1673234708, now seen corresponding path program 1 times [2022-12-11 23:28:05,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:05,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885703274] [2022-12-11 23:28:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885703274] [2022-12-11 23:28:05,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885703274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:28:05,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:28:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:28:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593434000] [2022-12-11 23:28:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:28:05,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:28:05,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:28:05,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:28:05,238 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:05,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:05,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:05,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:05,320 INFO L130 PetriNetUnfolder]: 27/140 cut-off events. [2022-12-11 23:28:05,320 INFO L131 PetriNetUnfolder]: For 28/46 co-relation queries the response was YES. [2022-12-11 23:28:05,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 140 events. 27/140 cut-off events. For 28/46 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 399 event pairs, 0 based on Foata normal form. 4/130 useless extension candidates. Maximal degree in co-relation 210. Up to 31 conditions per place. [2022-12-11 23:28:05,321 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 19 selfloop transitions, 9 changer transitions 5/75 dead transitions. [2022-12-11 23:28:05,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 291 flow [2022-12-11 23:28:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 23:28:05,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 23:28:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 383 transitions. [2022-12-11 23:28:05,323 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.829004329004329 [2022-12-11 23:28:05,324 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2022-12-11 23:28:05,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 75 transitions, 291 flow [2022-12-11 23:28:05,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 70 transitions, 261 flow [2022-12-11 23:28:05,326 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 261 flow [2022-12-11 23:28:05,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,327 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:05,327 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:05,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 23:28:05,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:05,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1128844342, now seen corresponding path program 1 times [2022-12-11 23:28:05,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:05,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431040414] [2022-12-11 23:28:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:05,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:05,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:05,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431040414] [2022-12-11 23:28:05,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431040414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:28:05,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:28:05,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:28:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448652561] [2022-12-11 23:28:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:28:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:28:05,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:28:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:28:05,473 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:05,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:05,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:05,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:05,558 INFO L130 PetriNetUnfolder]: 37/192 cut-off events. [2022-12-11 23:28:05,558 INFO L131 PetriNetUnfolder]: For 111/177 co-relation queries the response was YES. [2022-12-11 23:28:05,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 192 events. 37/192 cut-off events. For 111/177 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 642 event pairs, 0 based on Foata normal form. 14/188 useless extension candidates. Maximal degree in co-relation 356. Up to 51 conditions per place. [2022-12-11 23:28:05,560 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 25 selfloop transitions, 11 changer transitions 8/86 dead transitions. [2022-12-11 23:28:05,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 86 transitions, 445 flow [2022-12-11 23:28:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 23:28:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 23:28:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 494 transitions. [2022-12-11 23:28:05,562 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8316498316498316 [2022-12-11 23:28:05,562 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2022-12-11 23:28:05,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 86 transitions, 445 flow [2022-12-11 23:28:05,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 78 transitions, 381 flow [2022-12-11 23:28:05,564 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 381 flow [2022-12-11 23:28:05,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,564 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:05,564 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:05,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 23:28:05,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:05,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1724335678, now seen corresponding path program 2 times [2022-12-11 23:28:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:05,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168669861] [2022-12-11 23:28:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:05,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:05,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:05,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168669861] [2022-12-11 23:28:05,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168669861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:28:05,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:28:05,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:28:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060127027] [2022-12-11 23:28:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:28:05,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:28:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:05,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:28:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:28:05,684 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:05,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 78 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:05,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:05,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:05,767 INFO L130 PetriNetUnfolder]: 30/175 cut-off events. [2022-12-11 23:28:05,768 INFO L131 PetriNetUnfolder]: For 194/258 co-relation queries the response was YES. [2022-12-11 23:28:05,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 175 events. 30/175 cut-off events. For 194/258 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 574 event pairs, 0 based on Foata normal form. 16/175 useless extension candidates. Maximal degree in co-relation 359. Up to 41 conditions per place. [2022-12-11 23:28:05,769 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 22 selfloop transitions, 12 changer transitions 12/88 dead transitions. [2022-12-11 23:28:05,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 553 flow [2022-12-11 23:28:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 23:28:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 23:28:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 488 transitions. [2022-12-11 23:28:05,770 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8215488215488216 [2022-12-11 23:28:05,771 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2022-12-11 23:28:05,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 88 transitions, 553 flow [2022-12-11 23:28:05,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 76 transitions, 433 flow [2022-12-11 23:28:05,772 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 433 flow [2022-12-11 23:28:05,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,772 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:05,773 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:05,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 23:28:05,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:05,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1063132410, now seen corresponding path program 1 times [2022-12-11 23:28:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:05,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862898828] [2022-12-11 23:28:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:05,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862898828] [2022-12-11 23:28:05,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862898828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:28:05,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:28:05,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:28:05,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086718644] [2022-12-11 23:28:05,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:28:05,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:28:05,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:28:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:28:05,858 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:05,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:05,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:05,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:05,983 INFO L130 PetriNetUnfolder]: 43/232 cut-off events. [2022-12-11 23:28:05,983 INFO L131 PetriNetUnfolder]: For 371/447 co-relation queries the response was YES. [2022-12-11 23:28:05,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 232 events. 43/232 cut-off events. For 371/447 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 847 event pairs, 0 based on Foata normal form. 15/226 useless extension candidates. Maximal degree in co-relation 571. Up to 62 conditions per place. [2022-12-11 23:28:05,986 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 26 selfloop transitions, 21 changer transitions 8/97 dead transitions. [2022-12-11 23:28:05,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 97 transitions, 753 flow [2022-12-11 23:28:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 23:28:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 23:28:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 600 transitions. [2022-12-11 23:28:05,989 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8264462809917356 [2022-12-11 23:28:05,990 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2022-12-11 23:28:05,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 97 transitions, 753 flow [2022-12-11 23:28:05,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 89 transitions, 657 flow [2022-12-11 23:28:05,992 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 657 flow [2022-12-11 23:28:05,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:05,992 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:05,992 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:05,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 23:28:05,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:05,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash -698770310, now seen corresponding path program 2 times [2022-12-11 23:28:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:05,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330876255] [2022-12-11 23:28:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:06,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:06,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330876255] [2022-12-11 23:28:06,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330876255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:28:06,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:28:06,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:28:06,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62020317] [2022-12-11 23:28:06,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:28:06,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:28:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:06,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:28:06,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:28:06,086 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:06,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 657 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:06,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:06,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:06,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:06,189 INFO L130 PetriNetUnfolder]: 36/206 cut-off events. [2022-12-11 23:28:06,189 INFO L131 PetriNetUnfolder]: For 502/594 co-relation queries the response was YES. [2022-12-11 23:28:06,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 206 events. 36/206 cut-off events. For 502/594 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 739 event pairs, 0 based on Foata normal form. 26/214 useless extension candidates. Maximal degree in co-relation 556. Up to 52 conditions per place. [2022-12-11 23:28:06,190 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 24 selfloop transitions, 21 changer transitions 12/99 dead transitions. [2022-12-11 23:28:06,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 99 transitions, 891 flow [2022-12-11 23:28:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 23:28:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 23:28:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 594 transitions. [2022-12-11 23:28:06,192 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-12-11 23:28:06,193 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2022-12-11 23:28:06,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 99 transitions, 891 flow [2022-12-11 23:28:06,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 87 transitions, 723 flow [2022-12-11 23:28:06,194 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 723 flow [2022-12-11 23:28:06,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:06,194 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:06,195 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:06,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 23:28:06,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:06,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash 661120386, now seen corresponding path program 3 times [2022-12-11 23:28:06,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:06,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380070129] [2022-12-11 23:28:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:06,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:06,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380070129] [2022-12-11 23:28:06,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380070129] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:28:06,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:28:06,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:28:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046723251] [2022-12-11 23:28:06,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:28:06,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:28:06,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:06,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:28:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:28:06,287 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:06,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 723 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:06,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:06,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:06,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:06,407 INFO L130 PetriNetUnfolder]: 35/198 cut-off events. [2022-12-11 23:28:06,408 INFO L131 PetriNetUnfolder]: For 684/764 co-relation queries the response was YES. [2022-12-11 23:28:06,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 198 events. 35/198 cut-off events. For 684/764 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 726 event pairs, 0 based on Foata normal form. 20/201 useless extension candidates. Maximal degree in co-relation 595. Up to 50 conditions per place. [2022-12-11 23:28:06,409 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 33 selfloop transitions, 17 changer transitions 5/97 dead transitions. [2022-12-11 23:28:06,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 973 flow [2022-12-11 23:28:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 23:28:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 23:28:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 647 transitions. [2022-12-11 23:28:06,410 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8169191919191919 [2022-12-11 23:28:06,411 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 35 predicate places. [2022-12-11 23:28:06,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 97 transitions, 973 flow [2022-12-11 23:28:06,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 92 transitions, 893 flow [2022-12-11 23:28:06,412 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 893 flow [2022-12-11 23:28:06,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:06,412 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:06,412 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:06,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 23:28:06,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:06,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 298308350, now seen corresponding path program 1 times [2022-12-11 23:28:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:06,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130809394] [2022-12-11 23:28:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:06,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:06,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130809394] [2022-12-11 23:28:06,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130809394] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:06,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044408193] [2022-12-11 23:28:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:06,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:06,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:06,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:06,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 23:28:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:06,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 23:28:06,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:06,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:06,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044408193] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:06,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:06,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-12-11 23:28:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431860665] [2022-12-11 23:28:06,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:06,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-11 23:28:06,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-11 23:28:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-11 23:28:06,838 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:06,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 893 flow. Second operand has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:06,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:06,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:06,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:07,036 INFO L130 PetriNetUnfolder]: 53/297 cut-off events. [2022-12-11 23:28:07,037 INFO L131 PetriNetUnfolder]: For 1260/1398 co-relation queries the response was YES. [2022-12-11 23:28:07,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 297 events. 53/297 cut-off events. For 1260/1398 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1148 event pairs, 0 based on Foata normal form. 21/290 useless extension candidates. Maximal degree in co-relation 985. Up to 79 conditions per place. [2022-12-11 23:28:07,039 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 34 selfloop transitions, 36 changer transitions 14/126 dead transitions. [2022-12-11 23:28:07,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 126 transitions, 1605 flow [2022-12-11 23:28:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 23:28:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 23:28:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1079 transitions. [2022-12-11 23:28:07,041 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8174242424242424 [2022-12-11 23:28:07,042 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 52 predicate places. [2022-12-11 23:28:07,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 1605 flow [2022-12-11 23:28:07,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 112 transitions, 1353 flow [2022-12-11 23:28:07,044 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 1353 flow [2022-12-11 23:28:07,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:07,045 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:07,045 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:07,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:07,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:07,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:07,252 INFO L85 PathProgramCache]: Analyzing trace with hash 64894311, now seen corresponding path program 1 times [2022-12-11 23:28:07,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:07,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511755969] [2022-12-11 23:28:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:07,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:07,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:07,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511755969] [2022-12-11 23:28:07,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511755969] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:07,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763452568] [2022-12-11 23:28:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:07,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:07,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:07,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 23:28:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:07,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 23:28:07,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:07,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:07,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763452568] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:07,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:07,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-12-11 23:28:07,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625763032] [2022-12-11 23:28:07,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:07,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-11 23:28:07,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-11 23:28:07,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-12-11 23:28:07,703 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:07,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 1353 flow. Second operand has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:07,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:07,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:07,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:07,967 INFO L130 PetriNetUnfolder]: 75/463 cut-off events. [2022-12-11 23:28:07,967 INFO L131 PetriNetUnfolder]: For 2297/2461 co-relation queries the response was YES. [2022-12-11 23:28:07,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 463 events. 75/463 cut-off events. For 2297/2461 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1872 event pairs, 0 based on Foata normal form. 21/438 useless extension candidates. Maximal degree in co-relation 1599. Up to 119 conditions per place. [2022-12-11 23:28:07,970 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 73 selfloop transitions, 25 changer transitions 26/166 dead transitions. [2022-12-11 23:28:07,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 166 transitions, 2573 flow [2022-12-11 23:28:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-11 23:28:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-11 23:28:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1350 transitions. [2022-12-11 23:28:07,974 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-12-11 23:28:07,974 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 71 predicate places. [2022-12-11 23:28:07,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 166 transitions, 2573 flow [2022-12-11 23:28:07,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 140 transitions, 2053 flow [2022-12-11 23:28:07,977 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 140 transitions, 2053 flow [2022-12-11 23:28:07,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:07,977 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:07,977 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:07,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:08,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-11 23:28:08,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash 865146735, now seen corresponding path program 2 times [2022-12-11 23:28:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:08,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576210411] [2022-12-11 23:28:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576210411] [2022-12-11 23:28:08,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576210411] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738853640] [2022-12-11 23:28:08,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 23:28:08,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:08,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:08,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:08,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 23:28:08,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 23:28:08,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:08,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 23:28:08,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:08,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:08,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738853640] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:08,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:08,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-12-11 23:28:08,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374347213] [2022-12-11 23:28:08,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-11 23:28:08,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-11 23:28:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-12-11 23:28:08,686 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:08,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 140 transitions, 2053 flow. Second operand has 18 states, 18 states have (on average 52.666666666666664) internal successors, (948), 18 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:08,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:08,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:08,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:09,187 INFO L130 PetriNetUnfolder]: 113/737 cut-off events. [2022-12-11 23:28:09,188 INFO L131 PetriNetUnfolder]: For 4317/4581 co-relation queries the response was YES. [2022-12-11 23:28:09,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 737 events. 113/737 cut-off events. For 4317/4581 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4383 event pairs, 0 based on Foata normal form. 29/691 useless extension candidates. Maximal degree in co-relation 2721. Up to 191 conditions per place. [2022-12-11 23:28:09,191 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 94 selfloop transitions, 76 changer transitions 26/238 dead transitions. [2022-12-11 23:28:09,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 238 transitions, 4405 flow [2022-12-11 23:28:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-11 23:28:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-11 23:28:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1723 transitions. [2022-12-11 23:28:09,197 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8158143939393939 [2022-12-11 23:28:09,197 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 93 predicate places. [2022-12-11 23:28:09,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 238 transitions, 4405 flow [2022-12-11 23:28:09,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 212 transitions, 3833 flow [2022-12-11 23:28:09,201 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 212 transitions, 3833 flow [2022-12-11 23:28:09,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 52.666666666666664) internal successors, (948), 18 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:09,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:09,201 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:09,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:09,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:09,406 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:09,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:09,407 INFO L85 PathProgramCache]: Analyzing trace with hash -391380653, now seen corresponding path program 3 times [2022-12-11 23:28:09,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:09,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816305467] [2022-12-11 23:28:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:09,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:09,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:09,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816305467] [2022-12-11 23:28:09,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816305467] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:09,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349812393] [2022-12-11 23:28:09,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 23:28:09,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:09,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:09,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:09,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 23:28:09,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-11 23:28:09,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:09,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 23:28:09,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:09,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:09,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349812393] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:09,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:09,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-12-11 23:28:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19594629] [2022-12-11 23:28:09,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:09,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-11 23:28:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-11 23:28:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-12-11 23:28:09,745 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:09,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 212 transitions, 3833 flow. Second operand has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:09,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:09,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:09,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:10,240 INFO L130 PetriNetUnfolder]: 169/1065 cut-off events. [2022-12-11 23:28:10,241 INFO L131 PetriNetUnfolder]: For 7598/8068 co-relation queries the response was YES. [2022-12-11 23:28:10,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 1065 events. 169/1065 cut-off events. For 7598/8068 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7333 event pairs, 0 based on Foata normal form. 37/994 useless extension candidates. Maximal degree in co-relation 4305. Up to 287 conditions per place. [2022-12-11 23:28:10,247 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 123 selfloop transitions, 143 changer transitions 26/334 dead transitions. [2022-12-11 23:28:10,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 334 transitions, 7101 flow [2022-12-11 23:28:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-11 23:28:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-11 23:28:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1941 transitions. [2022-12-11 23:28:10,249 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8169191919191919 [2022-12-11 23:28:10,249 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 119 predicate places. [2022-12-11 23:28:10,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 334 transitions, 7101 flow [2022-12-11 23:28:10,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 308 transitions, 6477 flow [2022-12-11 23:28:10,255 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 308 transitions, 6477 flow [2022-12-11 23:28:10,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:10,256 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:10,256 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:10,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:10,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:10,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1956775817, now seen corresponding path program 4 times [2022-12-11 23:28:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:10,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2416904] [2022-12-11 23:28:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:10,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:10,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2416904] [2022-12-11 23:28:10,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2416904] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:10,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209044553] [2022-12-11 23:28:10,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 23:28:10,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:10,628 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:10,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 23:28:10,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 23:28:10,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:10,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-11 23:28:10,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:10,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:11,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209044553] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:11,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:11,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2022-12-11 23:28:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309366458] [2022-12-11 23:28:11,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-11 23:28:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-11 23:28:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-12-11 23:28:11,108 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:11,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 308 transitions, 6477 flow. Second operand has 26 states, 26 states have (on average 52.34615384615385) internal successors, (1361), 26 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:11,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:11,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:11,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:11,793 INFO L130 PetriNetUnfolder]: 232/1553 cut-off events. [2022-12-11 23:28:11,794 INFO L131 PetriNetUnfolder]: For 12984/13562 co-relation queries the response was YES. [2022-12-11 23:28:11,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 1553 events. 232/1553 cut-off events. For 12984/13562 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12144 event pairs, 0 based on Foata normal form. 53/1447 useless extension candidates. Maximal degree in co-relation 6577. Up to 411 conditions per place. [2022-12-11 23:28:11,805 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 196 selfloop transitions, 188 changer transitions 32/458 dead transitions. [2022-12-11 23:28:11,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 458 transitions, 10909 flow [2022-12-11 23:28:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-11 23:28:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-11 23:28:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2098 transitions. [2022-12-11 23:28:11,809 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.815073815073815 [2022-12-11 23:28:11,809 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 148 predicate places. [2022-12-11 23:28:11,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 458 transitions, 10909 flow [2022-12-11 23:28:11,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 426 transitions, 10077 flow [2022-12-11 23:28:11,821 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 426 transitions, 10077 flow [2022-12-11 23:28:11,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 52.34615384615385) internal successors, (1361), 26 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:11,821 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:11,822 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:11,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-11 23:28:12,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-11 23:28:12,026 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash 600986197, now seen corresponding path program 5 times [2022-12-11 23:28:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:12,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875514559] [2022-12-11 23:28:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:12,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875514559] [2022-12-11 23:28:12,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875514559] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056628938] [2022-12-11 23:28:12,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 23:28:12,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:12,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:12,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:12,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 23:28:12,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-11 23:28:12,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-11 23:28:12,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:12,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:12,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056628938] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:12,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:12,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2022-12-11 23:28:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578737837] [2022-12-11 23:28:12,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:12,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-11 23:28:12,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-11 23:28:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-12-11 23:28:12,529 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:12,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 426 transitions, 10077 flow. Second operand has 26 states, 26 states have (on average 52.30769230769231) internal successors, (1360), 26 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:12,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:12,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:12,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:13,573 INFO L130 PetriNetUnfolder]: 373/2456 cut-off events. [2022-12-11 23:28:13,573 INFO L131 PetriNetUnfolder]: For 23935/25051 co-relation queries the response was YES. [2022-12-11 23:28:13,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11279 conditions, 2456 events. 373/2456 cut-off events. For 23935/25051 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 20392 event pairs, 0 based on Foata normal form. 87/2290 useless extension candidates. Maximal degree in co-relation 11189. Up to 664 conditions per place. [2022-12-11 23:28:13,588 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 291 selfloop transitions, 340 changer transitions 38/711 dead transitions. [2022-12-11 23:28:13,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 711 transitions, 18825 flow [2022-12-11 23:28:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-11 23:28:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-11 23:28:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2803 transitions. [2022-12-11 23:28:13,591 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8167249417249417 [2022-12-11 23:28:13,591 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 188 predicate places. [2022-12-11 23:28:13,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 711 transitions, 18825 flow [2022-12-11 23:28:13,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 673 transitions, 17761 flow [2022-12-11 23:28:13,606 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 673 transitions, 17761 flow [2022-12-11 23:28:13,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 52.30769230769231) internal successors, (1360), 26 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:13,606 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:13,606 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:13,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:13,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:13,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:13,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1808917305, now seen corresponding path program 6 times [2022-12-11 23:28:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:13,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536251395] [2022-12-11 23:28:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:28:14,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:14,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536251395] [2022-12-11 23:28:14,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536251395] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:14,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048978222] [2022-12-11 23:28:14,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 23:28:14,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:14,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:14,140 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:14,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 23:28:14,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-12-11 23:28:14,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:14,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-11 23:28:14,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:28:14,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:28:14,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048978222] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:14,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:14,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2022-12-11 23:28:14,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444451091] [2022-12-11 23:28:14,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:14,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-11 23:28:14,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-11 23:28:14,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-12-11 23:28:14,942 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:14,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 673 transitions, 17761 flow. Second operand has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:14,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:14,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:14,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:16,310 INFO L130 PetriNetUnfolder]: 419/2778 cut-off events. [2022-12-11 23:28:16,310 INFO L131 PetriNetUnfolder]: For 31625/32889 co-relation queries the response was YES. [2022-12-11 23:28:16,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13455 conditions, 2778 events. 419/2778 cut-off events. For 31625/32889 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 21946 event pairs, 0 based on Foata normal form. 33/2524 useless extension candidates. Maximal degree in co-relation 13360. Up to 748 conditions per place. [2022-12-11 23:28:16,326 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 632 selfloop transitions, 59 changer transitions 62/795 dead transitions. [2022-12-11 23:28:16,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 795 transitions, 22683 flow [2022-12-11 23:28:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-11 23:28:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-12-11 23:28:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 3282 transitions. [2022-12-11 23:28:16,331 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8152011922503726 [2022-12-11 23:28:16,331 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 235 predicate places. [2022-12-11 23:28:16,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 795 transitions, 22683 flow [2022-12-11 23:28:16,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 733 transitions, 20823 flow [2022-12-11 23:28:16,349 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 733 transitions, 20823 flow [2022-12-11 23:28:16,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:16,349 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:16,350 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:16,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:16,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:16,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:16,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash -425509557, now seen corresponding path program 7 times [2022-12-11 23:28:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:16,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681359324] [2022-12-11 23:28:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:16,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:16,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:16,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681359324] [2022-12-11 23:28:16,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681359324] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:16,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651520114] [2022-12-11 23:28:16,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 23:28:16,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:16,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:16,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:16,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 23:28:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:17,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-11 23:28:17,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:17,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:17,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651520114] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:17,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:17,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2022-12-11 23:28:17,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545546714] [2022-12-11 23:28:17,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:17,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-11 23:28:17,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-11 23:28:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2022-12-11 23:28:17,682 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:17,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 733 transitions, 20823 flow. Second operand has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:17,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:17,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:17,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:19,264 INFO L130 PetriNetUnfolder]: 531/3829 cut-off events. [2022-12-11 23:28:19,265 INFO L131 PetriNetUnfolder]: For 48393/49659 co-relation queries the response was YES. [2022-12-11 23:28:19,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18628 conditions, 3829 events. 531/3829 cut-off events. For 48393/49659 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 33097 event pairs, 0 based on Foata normal form. 51/3475 useless extension candidates. Maximal degree in co-relation 18528. Up to 972 conditions per place. [2022-12-11 23:28:19,285 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 649 selfloop transitions, 266 changer transitions 62/1019 dead transitions. [2022-12-11 23:28:19,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 1019 transitions, 31357 flow [2022-12-11 23:28:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-11 23:28:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-11 23:28:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3709 transitions. [2022-12-11 23:28:19,288 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8144488361879666 [2022-12-11 23:28:19,288 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 282 predicate places. [2022-12-11 23:28:19,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 1019 transitions, 31357 flow [2022-12-11 23:28:19,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 957 transitions, 29373 flow [2022-12-11 23:28:19,310 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 957 transitions, 29373 flow [2022-12-11 23:28:19,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:19,311 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:19,312 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:19,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:19,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-11 23:28:19,516 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash 335815133, now seen corresponding path program 8 times [2022-12-11 23:28:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:19,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788158293] [2022-12-11 23:28:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:19,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:19,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788158293] [2022-12-11 23:28:19,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788158293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:19,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017064914] [2022-12-11 23:28:19,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 23:28:19,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:19,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:19,816 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:19,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-11 23:28:19,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 23:28:19,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:19,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-11 23:28:19,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:20,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:20,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017064914] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:20,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:20,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2022-12-11 23:28:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143817640] [2022-12-11 23:28:20,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:20,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-11 23:28:20,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:20,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-11 23:28:20,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2022-12-11 23:28:20,524 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:20,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 957 transitions, 29373 flow. Second operand has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:20,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:20,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:22,520 INFO L130 PetriNetUnfolder]: 683/4983 cut-off events. [2022-12-11 23:28:22,520 INFO L131 PetriNetUnfolder]: For 72390/74322 co-relation queries the response was YES. [2022-12-11 23:28:22,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25456 conditions, 4983 events. 683/4983 cut-off events. For 72390/74322 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 46067 event pairs, 0 based on Foata normal form. 123/4578 useless extension candidates. Maximal degree in co-relation 25351. Up to 1265 conditions per place. [2022-12-11 23:28:22,544 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 589 selfloop transitions, 619 changer transitions 62/1312 dead transitions. [2022-12-11 23:28:22,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1312 transitions, 43273 flow [2022-12-11 23:28:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-12-11 23:28:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-12-11 23:28:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4141 transitions. [2022-12-11 23:28:22,547 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8148366784730421 [2022-12-11 23:28:22,548 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 337 predicate places. [2022-12-11 23:28:22,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 403 places, 1312 transitions, 43273 flow [2022-12-11 23:28:22,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 1250 transitions, 41165 flow [2022-12-11 23:28:22,576 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 1250 transitions, 41165 flow [2022-12-11 23:28:22,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:22,576 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:22,576 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:22,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-11 23:28:22,781 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1153618799, now seen corresponding path program 9 times [2022-12-11 23:28:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:22,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422832525] [2022-12-11 23:28:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:22,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:23,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422832525] [2022-12-11 23:28:23,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422832525] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128575840] [2022-12-11 23:28:23,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 23:28:23,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:23,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:23,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:23,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-11 23:28:23,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-11 23:28:23,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:23,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-11 23:28:23,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:23,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:28:23,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128575840] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:23,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:23,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2022-12-11 23:28:23,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008594885] [2022-12-11 23:28:23,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:23,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-11 23:28:23,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-11 23:28:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2022-12-11 23:28:23,592 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:23,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1250 transitions, 41165 flow. Second operand has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:23,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:23,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:23,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:26,184 INFO L130 PetriNetUnfolder]: 815/5919 cut-off events. [2022-12-11 23:28:26,184 INFO L131 PetriNetUnfolder]: For 94927/96693 co-relation queries the response was YES. [2022-12-11 23:28:26,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31581 conditions, 5919 events. 815/5919 cut-off events. For 94927/96693 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 55748 event pairs, 0 based on Foata normal form. 125/5416 useless extension candidates. Maximal degree in co-relation 31471. Up to 1495 conditions per place. [2022-12-11 23:28:26,213 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 661 selfloop transitions, 757 changer transitions 62/1522 dead transitions. [2022-12-11 23:28:26,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1522 transitions, 53373 flow [2022-12-11 23:28:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-12-11 23:28:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2022-12-11 23:28:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 5011 transitions. [2022-12-11 23:28:26,217 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8163897034864777 [2022-12-11 23:28:26,217 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 408 predicate places. [2022-12-11 23:28:26,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 474 places, 1522 transitions, 53373 flow [2022-12-11 23:28:26,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 453 places, 1460 transitions, 51141 flow [2022-12-11 23:28:26,250 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 1460 transitions, 51141 flow [2022-12-11 23:28:26,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:26,251 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:26,251 INFO L214 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:26,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:26,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-11 23:28:26,456 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash 102398062, now seen corresponding path program 10 times [2022-12-11 23:28:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581877743] [2022-12-11 23:28:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:26,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:26,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581877743] [2022-12-11 23:28:26,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581877743] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:26,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070649183] [2022-12-11 23:28:26,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 23:28:26,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:26,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:26,899 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:26,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-11 23:28:26,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 23:28:26,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:26,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-11 23:28:26,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:27,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:27,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070649183] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:27,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:27,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2022-12-11 23:28:27,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165146785] [2022-12-11 23:28:27,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:27,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-11 23:28:27,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-11 23:28:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2022-12-11 23:28:27,690 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:27,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 1460 transitions, 51141 flow. Second operand has 47 states, 47 states have (on average 52.191489361702125) internal successors, (2453), 47 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:27,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:27,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:27,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:31,206 INFO L130 PetriNetUnfolder]: 911/6657 cut-off events. [2022-12-11 23:28:31,206 INFO L131 PetriNetUnfolder]: For 118476/120270 co-relation queries the response was YES. [2022-12-11 23:28:31,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37032 conditions, 6657 events. 911/6657 cut-off events. For 118476/120270 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 61728 event pairs, 0 based on Foata normal form. 126/6075 useless extension candidates. Maximal degree in co-relation 36917. Up to 1673 conditions per place. [2022-12-11 23:28:31,239 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 747 selfloop transitions, 862 changer transitions 69/1720 dead transitions. [2022-12-11 23:28:31,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 1720 transitions, 63857 flow [2022-12-11 23:28:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-12-11 23:28:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2022-12-11 23:28:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 5538 transitions. [2022-12-11 23:28:31,243 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8146513680494263 [2022-12-11 23:28:31,243 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 489 predicate places. [2022-12-11 23:28:31,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 555 places, 1720 transitions, 63857 flow [2022-12-11 23:28:31,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 538 places, 1651 transitions, 61235 flow [2022-12-11 23:28:31,285 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 1651 transitions, 61235 flow [2022-12-11 23:28:31,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 52.191489361702125) internal successors, (2453), 47 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:31,286 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:31,286 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:31,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-11 23:28:31,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-11 23:28:31,489 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:31,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:31,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1660903825, now seen corresponding path program 11 times [2022-12-11 23:28:31,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:31,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910805667] [2022-12-11 23:28:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:32,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:32,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910805667] [2022-12-11 23:28:32,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910805667] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:32,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124611503] [2022-12-11 23:28:32,472 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 23:28:32,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:32,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:32,474 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:32,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-11 23:28:32,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-12-11 23:28:32,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:32,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-11 23:28:32,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:32,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:28:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:28:33,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124611503] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:28:33,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:28:33,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 88 [2022-12-11 23:28:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961782834] [2022-12-11 23:28:33,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:28:33,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-12-11 23:28:33,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-12-11 23:28:33,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1747, Invalid=5909, Unknown=0, NotChecked=0, Total=7656 [2022-12-11 23:28:33,673 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 23:28:33,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1651 transitions, 61235 flow. Second operand has 88 states, 88 states have (on average 52.10227272727273) internal successors, (4585), 88 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:33,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:33,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 23:28:33,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:28:37,567 INFO L130 PetriNetUnfolder]: 935/6910 cut-off events. [2022-12-11 23:28:37,567 INFO L131 PetriNetUnfolder]: For 137370/138950 co-relation queries the response was YES. [2022-12-11 23:28:37,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39903 conditions, 6910 events. 935/6910 cut-off events. For 137370/138950 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 63745 event pairs, 0 based on Foata normal form. 122/6295 useless extension candidates. Maximal degree in co-relation 39783. Up to 1722 conditions per place. [2022-12-11 23:28:37,609 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 798 selfloop transitions, 918 changer transitions 11/1769 dead transitions. [2022-12-11 23:28:37,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1769 transitions, 69173 flow [2022-12-11 23:28:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-12-11 23:28:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2022-12-11 23:28:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 4984 transitions. [2022-12-11 23:28:37,613 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8119908765070055 [2022-12-11 23:28:37,614 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 564 predicate places. [2022-12-11 23:28:37,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 630 places, 1769 transitions, 69173 flow [2022-12-11 23:28:37,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 626 places, 1758 transitions, 68733 flow [2022-12-11 23:28:37,664 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 1758 transitions, 68733 flow [2022-12-11 23:28:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 52.10227272727273) internal successors, (4585), 88 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:37,665 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:28:37,666 INFO L214 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:28:37,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-11 23:28:37,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:37,866 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:28:37,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:28:37,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1012854389, now seen corresponding path program 12 times [2022-12-11 23:28:37,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:28:37,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566955684] [2022-12-11 23:28:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:28:37,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:28:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:28:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1758 proven. 115 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 23:28:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:28:38,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566955684] [2022-12-11 23:28:38,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566955684] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:28:38,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838406766] [2022-12-11 23:28:38,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 23:28:38,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:28:38,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:28:38,720 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:28:38,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-11 23:28:38,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2022-12-11 23:28:38,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:28:38,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-11 23:28:38,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:28:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1873 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 23:28:39,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:28:39,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838406766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:28:39,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 23:28:39,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [43] total 45 [2022-12-11 23:28:39,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857826142] [2022-12-11 23:28:39,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:28:39,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-11 23:28:39,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:28:39,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-11 23:28:39,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1491, Unknown=0, NotChecked=0, Total=1980 [2022-12-11 23:28:39,046 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 66 [2022-12-11 23:28:39,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 1758 transitions, 68733 flow. Second operand has 43 states, 43 states have (on average 55.95348837209303) internal successors, (2406), 43 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:28:39,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:28:39,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 66 [2022-12-11 23:28:39,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:29:16,862 INFO L130 PetriNetUnfolder]: 15764/79188 cut-off events. [2022-12-11 23:29:16,862 INFO L131 PetriNetUnfolder]: For 1738729/1760525 co-relation queries the response was YES. [2022-12-11 23:29:17,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516389 conditions, 79188 events. 15764/79188 cut-off events. For 1738729/1760525 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 1154939 event pairs, 0 based on Foata normal form. 2/70036 useless extension candidates. Maximal degree in co-relation 516267. Up to 21704 conditions per place. [2022-12-11 23:29:17,439 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 0 selfloop transitions, 0 changer transitions 1894/1894 dead transitions. [2022-12-11 23:29:17,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 1894 transitions, 71083 flow [2022-12-11 23:29:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-11 23:29:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-12-11 23:29:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3568 transitions. [2022-12-11 23:29:17,442 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8581048581048581 [2022-12-11 23:29:17,447 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 619 predicate places. [2022-12-11 23:29:17,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 685 places, 1894 transitions, 71083 flow [2022-12-11 23:29:17,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-11 23:29:17,508 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-11 23:29:17,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 55.95348837209303) internal successors, (2406), 43 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:17,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 23:29:17,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 23:29:17,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 23:29:17,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-11 23:29:17,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-11 23:29:17,712 INFO L445 BasicCegarLoop]: Path program histogram: [12, 3, 2, 1, 1, 1] [2022-12-11 23:29:17,714 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 23:29:17,715 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 23:29:17,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 11:29:17 BasicIcfg [2022-12-11 23:29:17,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 23:29:17,718 INFO L158 Benchmark]: Toolchain (without parser) took 74301.02ms. Allocated memory was 184.5MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 159.6MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-12-11 23:29:17,718 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 161.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 23:29:17,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.84ms. Allocated memory is still 184.5MB. Free memory was 159.1MB in the beginning and 139.1MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-11 23:29:17,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.34ms. Allocated memory is still 184.5MB. Free memory was 139.1MB in the beginning and 137.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 23:29:17,718 INFO L158 Benchmark]: Boogie Preprocessor took 29.20ms. Allocated memory is still 184.5MB. Free memory was 137.1MB in the beginning and 135.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 23:29:17,719 INFO L158 Benchmark]: RCFGBuilder took 314.44ms. Allocated memory is still 184.5MB. Free memory was 135.6MB in the beginning and 123.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-11 23:29:17,719 INFO L158 Benchmark]: TraceAbstraction took 73549.29ms. Allocated memory was 184.5MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 121.9MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2022-12-11 23:29:17,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 161.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 358.84ms. Allocated memory is still 184.5MB. Free memory was 159.1MB in the beginning and 139.1MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.34ms. Allocated memory is still 184.5MB. Free memory was 139.1MB in the beginning and 137.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.20ms. Allocated memory is still 184.5MB. Free memory was 137.1MB in the beginning and 135.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 314.44ms. Allocated memory is still 184.5MB. Free memory was 135.6MB in the beginning and 123.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 73549.29ms. Allocated memory was 184.5MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 121.9MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.3s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 73.4s, OverallIterations: 20, TraceHistogramMax: 21, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 57.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3970 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3970 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 306 mSDsCounter, 809 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4300 IncrementalHoareTripleChecker+Invalid, 5109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 809 mSolverCounterUnsat, 104 mSDtfsCounter, 4300 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3715 GetRequests, 2527 SyntacticMatches, 25 SemanticMatches, 1163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36463 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68733occurred in iteration=19, InterpolantAutomatonStates: 832, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 86829 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 3220 NumberOfCodeBlocks, 3220 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 4420 ConstructedInterpolants, 0 QuantifiedInterpolants, 17094 SizeOfPredicates, 222 NumberOfNonLiveVariables, 3161 ConjunctsInSsa, 287 ConjunctsInUnsatCore, 45 InterpolantComputations, 8 PerfectInterpolantSequences, 3759/15619 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 23:29:17,732 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 Received shutdown request...