/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_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:03:57,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:03:57,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:03:57,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:03:57,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:03:57,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:03:57,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:03:57,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:03:57,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:03:57,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:03:57,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:03:57,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:03:57,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:03:57,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:03:57,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:03:57,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:03:57,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:03:57,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:03:57,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:03:57,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:03:57,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:03:57,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:03:57,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:03:57,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:03:57,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:03:57,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:03:57,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:03:57,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:03:57,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:03:57,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:03:57,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:03:57,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:03:57,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:03:57,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:03:57,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:03:57,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:03:57,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:03:57,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:03:57,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:03:57,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:03:57,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:03:57,751 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 [2022-12-12 12:03:57,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:03:57,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:03:57,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:03:57,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:03:57,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:03:57,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:03:57,780 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:03:57,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:03:57,780 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:03:57,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:03:57,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:03:57,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:03:57,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:03:57,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:03:57,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:03:57,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:03:57,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:03:57,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:03:57,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:03:57,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:03:57,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:03:57,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:03:57,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:03:57,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:03:57,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:03:57,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:03:57,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:03:57,782 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:03:57,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:03:57,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:03:57,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:03:57,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:03:58,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:03:58,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:03:58,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:03:58,084 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:03:58,084 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:03:58,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 12:03:59,125 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:03:59,424 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:03:59,424 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 12:03:59,437 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83153cf69/2449494596ca4108906ebee326e4271d/FLAG86bcc428e [2022-12-12 12:03:59,456 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83153cf69/2449494596ca4108906ebee326e4271d [2022-12-12 12:03:59,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:03:59,461 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:03:59,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:03:59,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:03:59,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:03:59,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf8af00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59, skipping insertion in model container [2022-12-12 12:03:59,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:03:59,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:03:59,675 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-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 12:03:59,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:03:59,839 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:03:59,849 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-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 12:03:59,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:03:59,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:03:59,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:03:59,914 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:03:59,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59 WrapperNode [2022-12-12 12:03:59,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:03:59,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:03:59,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:03:59,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:03:59,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,963 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 12:03:59,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:03:59,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:03:59,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:03:59,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:03:59,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,991 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:03:59,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:03:59,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:03:59,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:03:59,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (1/1) ... [2022-12-12 12:03:59,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:04:00,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:04:00,025 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) [2022-12-12 12:04:00,043 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 [2022-12-12 12:04:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:04:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 12:04:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:04:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:04:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:04:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 12:04:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 12:04:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 12:04:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 12:04:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 12:04:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 12:04:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:04:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 12:04:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:04:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:04:00,059 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:04:00,165 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:04:00,167 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:04:00,286 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:04:00,291 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:04:00,291 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:04:00,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:04:00 BoogieIcfgContainer [2022-12-12 12:04:00,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:04:00,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:04:00,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:04:00,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:04:00,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:03:59" (1/3) ... [2022-12-12 12:04:00,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2365f31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:04:00, skipping insertion in model container [2022-12-12 12:04:00,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:03:59" (2/3) ... [2022-12-12 12:04:00,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2365f31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:04:00, skipping insertion in model container [2022-12-12 12:04:00,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:04:00" (3/3) ... [2022-12-12 12:04:00,298 INFO L112 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 12:04:00,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:04:00,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:04:00,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:04:00,343 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 12:04:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 12:04:00,431 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-12 12:04:00,432 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:04:00,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-12 12:04:00,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 12:04:00,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-12 12:04:00,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:04:00,457 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;@6452ec2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:04:00,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 12:04:00,474 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-12 12:04:00,474 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:04:00,474 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:00,475 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:00,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1911347137, now seen corresponding path program 1 times [2022-12-12 12:04:00,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:00,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117607379] [2022-12-12 12:04:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:00,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:01,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:01,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117607379] [2022-12-12 12:04:01,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117607379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:01,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:01,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:01,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296153196] [2022-12-12 12:04:01,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:01,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:01,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:01,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:01,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:01,143 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 12:04:01,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 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) [2022-12-12 12:04:01,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:01,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 12:04:01,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:01,406 INFO L130 PetriNetUnfolder]: 348/830 cut-off events. [2022-12-12 12:04:01,406 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-12 12:04:01,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 830 events. 348/830 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4716 event pairs, 40 based on Foata normal form. 35/837 useless extension candidates. Maximal degree in co-relation 1409. Up to 176 conditions per place. [2022-12-12 12:04:01,412 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 23 selfloop transitions, 6 changer transitions 47/127 dead transitions. [2022-12-12 12:04:01,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 127 transitions, 415 flow [2022-12-12 12:04:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:04:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:04:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 901 transitions. [2022-12-12 12:04:01,430 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8153846153846154 [2022-12-12 12:04:01,433 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-12-12 12:04:01,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 127 transitions, 415 flow [2022-12-12 12:04:01,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 402 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-12 12:04:01,439 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 127 transitions, 402 flow [2022-12-12 12:04:01,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 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) [2022-12-12 12:04:01,439 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:01,440 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:01,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:04:01,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:01,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1020593024, now seen corresponding path program 1 times [2022-12-12 12:04:01,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:01,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031891596] [2022-12-12 12:04:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:01,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:01,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031891596] [2022-12-12 12:04:01,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031891596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:01,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:01,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:01,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877667802] [2022-12-12 12:04:01,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:01,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:01,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:01,695 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 12:04:01,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 127 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2022-12-12 12:04:01,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:01,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 12:04:01,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:01,964 INFO L130 PetriNetUnfolder]: 397/981 cut-off events. [2022-12-12 12:04:01,964 INFO L131 PetriNetUnfolder]: For 43/325 co-relation queries the response was YES. [2022-12-12 12:04:01,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 981 events. 397/981 cut-off events. For 43/325 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6172 event pairs, 23 based on Foata normal form. 23/980 useless extension candidates. Maximal degree in co-relation 2393. Up to 216 conditions per place. [2022-12-12 12:04:01,972 INFO L137 encePairwiseOnDemand]: 73/85 looper letters, 26 selfloop transitions, 12 changer transitions 159/248 dead transitions. [2022-12-12 12:04:01,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 248 transitions, 1284 flow [2022-12-12 12:04:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:04:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:04:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 900 transitions. [2022-12-12 12:04:01,976 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8144796380090498 [2022-12-12 12:04:01,977 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2022-12-12 12:04:01,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 248 transitions, 1284 flow [2022-12-12 12:04:01,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 248 transitions, 1278 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-12 12:04:01,984 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 248 transitions, 1278 flow [2022-12-12 12:04:01,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2022-12-12 12:04:01,985 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:01,985 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:01,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:04:01,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:01,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:01,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2141965537, now seen corresponding path program 1 times [2022-12-12 12:04:01,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:01,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200979855] [2022-12-12 12:04:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:02,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:02,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200979855] [2022-12-12 12:04:02,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200979855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:02,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:02,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:02,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532495110] [2022-12-12 12:04:02,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:02,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:02,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:02,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:02,178 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 12:04:02,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 248 transitions, 1278 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2022-12-12 12:04:02,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:02,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 12:04:02,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:02,437 INFO L130 PetriNetUnfolder]: 400/1017 cut-off events. [2022-12-12 12:04:02,438 INFO L131 PetriNetUnfolder]: For 170/963 co-relation queries the response was YES. [2022-12-12 12:04:02,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3238 conditions, 1017 events. 400/1017 cut-off events. For 170/963 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6673 event pairs, 12 based on Foata normal form. 41/1037 useless extension candidates. Maximal degree in co-relation 3200. Up to 227 conditions per place. [2022-12-12 12:04:02,441 INFO L137 encePairwiseOnDemand]: 73/85 looper letters, 27 selfloop transitions, 16 changer transitions 231/325 dead transitions. [2022-12-12 12:04:02,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 325 transitions, 2290 flow [2022-12-12 12:04:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:04:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:04:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 903 transitions. [2022-12-12 12:04:02,443 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8171945701357466 [2022-12-12 12:04:02,443 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 33 predicate places. [2022-12-12 12:04:02,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 325 transitions, 2290 flow [2022-12-12 12:04:02,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 325 transitions, 2242 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-12 12:04:02,448 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 325 transitions, 2242 flow [2022-12-12 12:04:02,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2022-12-12 12:04:02,449 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:02,449 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:02,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:04:02,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1906506301, now seen corresponding path program 1 times [2022-12-12 12:04:02,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:02,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834324498] [2022-12-12 12:04:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:02,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:02,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:02,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834324498] [2022-12-12 12:04:02,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834324498] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:02,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:02,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:04:02,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587420429] [2022-12-12 12:04:02,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:02,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:04:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:02,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:04:02,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:04:02,557 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-12 12:04:02,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 325 transitions, 2242 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2022-12-12 12:04:02,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:02,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-12 12:04:02,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:02,789 INFO L130 PetriNetUnfolder]: 764/2049 cut-off events. [2022-12-12 12:04:02,789 INFO L131 PetriNetUnfolder]: For 431/842 co-relation queries the response was YES. [2022-12-12 12:04:02,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 2049 events. 764/2049 cut-off events. For 431/842 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17149 event pairs, 34 based on Foata normal form. 5/1931 useless extension candidates. Maximal degree in co-relation 5286. Up to 421 conditions per place. [2022-12-12 12:04:02,800 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 35 selfloop transitions, 17 changer transitions 43/330 dead transitions. [2022-12-12 12:04:02,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 330 transitions, 2216 flow [2022-12-12 12:04:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:04:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:04:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2022-12-12 12:04:02,802 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8564705882352941 [2022-12-12 12:04:02,803 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 41 predicate places. [2022-12-12 12:04:02,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 330 transitions, 2216 flow [2022-12-12 12:04:02,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 330 transitions, 2212 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 12:04:02,807 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 330 transitions, 2212 flow [2022-12-12 12:04:02,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2022-12-12 12:04:02,807 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:02,807 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:04:02,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash 429505666, now seen corresponding path program 1 times [2022-12-12 12:04:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:02,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514020789] [2022-12-12 12:04:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:02,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:02,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514020789] [2022-12-12 12:04:02,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514020789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:02,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:02,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:02,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434328793] [2022-12-12 12:04:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:02,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:02,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:02,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:02,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:02,915 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-12 12:04:02,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 330 transitions, 2212 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:04:02,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:02,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-12 12:04:02,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:03,146 INFO L130 PetriNetUnfolder]: 460/1346 cut-off events. [2022-12-12 12:04:03,147 INFO L131 PetriNetUnfolder]: For 515/1175 co-relation queries the response was YES. [2022-12-12 12:04:03,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3731 conditions, 1346 events. 460/1346 cut-off events. For 515/1175 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10937 event pairs, 7 based on Foata normal form. 127/1391 useless extension candidates. Maximal degree in co-relation 3690. Up to 336 conditions per place. [2022-12-12 12:04:03,154 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 35 selfloop transitions, 44 changer transitions 94/250 dead transitions. [2022-12-12 12:04:03,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 250 transitions, 1617 flow [2022-12-12 12:04:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:04:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:04:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 947 transitions. [2022-12-12 12:04:03,156 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8570135746606334 [2022-12-12 12:04:03,159 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 52 predicate places. [2022-12-12 12:04:03,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 250 transitions, 1617 flow [2022-12-12 12:04:03,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 250 transitions, 1563 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-12-12 12:04:03,163 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 250 transitions, 1563 flow [2022-12-12 12:04:03,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:04:03,163 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:03,163 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:03,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 12:04:03,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:03,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:03,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2065273011, now seen corresponding path program 1 times [2022-12-12 12:04:03,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:03,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197107787] [2022-12-12 12:04:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:03,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197107787] [2022-12-12 12:04:03,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197107787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:03,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:03,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:04:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593297638] [2022-12-12 12:04:03,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:03,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:04:03,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:04:03,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:04:03,302 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-12 12:04:03,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 250 transitions, 1563 flow. Second operand has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 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) [2022-12-12 12:04:03,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:03,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-12 12:04:03,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:03,567 INFO L130 PetriNetUnfolder]: 419/1175 cut-off events. [2022-12-12 12:04:03,567 INFO L131 PetriNetUnfolder]: For 592/1135 co-relation queries the response was YES. [2022-12-12 12:04:03,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3877 conditions, 1175 events. 419/1175 cut-off events. For 592/1135 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9374 event pairs, 2 based on Foata normal form. 103/1234 useless extension candidates. Maximal degree in co-relation 3835. Up to 237 conditions per place. [2022-12-12 12:04:03,573 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 32 selfloop transitions, 48 changer transitions 47/200 dead transitions. [2022-12-12 12:04:03,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 200 transitions, 1354 flow [2022-12-12 12:04:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:04:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:04:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1150 transitions. [2022-12-12 12:04:03,575 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8455882352941176 [2022-12-12 12:04:03,576 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 45 predicate places. [2022-12-12 12:04:03,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 200 transitions, 1354 flow [2022-12-12 12:04:03,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 200 transitions, 1242 flow, removed 25 selfloop flow, removed 11 redundant places. [2022-12-12 12:04:03,579 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 200 transitions, 1242 flow [2022-12-12 12:04:03,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 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) [2022-12-12 12:04:03,579 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:03,579 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:03,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 12:04:03,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:03,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash -343406799, now seen corresponding path program 1 times [2022-12-12 12:04:03,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:03,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743704761] [2022-12-12 12:04:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:03,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:03,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:03,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743704761] [2022-12-12 12:04:03,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743704761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:03,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:03,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:03,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890510975] [2022-12-12 12:04:03,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:03,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:03,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:03,704 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 85 [2022-12-12 12:04:03,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 200 transitions, 1242 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2022-12-12 12:04:03,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:03,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 85 [2022-12-12 12:04:03,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:03,883 INFO L130 PetriNetUnfolder]: 585/1613 cut-off events. [2022-12-12 12:04:03,884 INFO L131 PetriNetUnfolder]: For 602/1072 co-relation queries the response was YES. [2022-12-12 12:04:03,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5047 conditions, 1613 events. 585/1613 cut-off events. For 602/1072 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 13409 event pairs, 2 based on Foata normal form. 38/1590 useless extension candidates. Maximal degree in co-relation 5000. Up to 325 conditions per place. [2022-12-12 12:04:03,925 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 37 selfloop transitions, 22 changer transitions 63/227 dead transitions. [2022-12-12 12:04:03,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 227 transitions, 1625 flow [2022-12-12 12:04:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 12:04:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 12:04:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 531 transitions. [2022-12-12 12:04:03,932 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7808823529411765 [2022-12-12 12:04:03,933 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 41 predicate places. [2022-12-12 12:04:03,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 227 transitions, 1625 flow [2022-12-12 12:04:03,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 227 transitions, 1615 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-12-12 12:04:03,936 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 227 transitions, 1615 flow [2022-12-12 12:04:03,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2022-12-12 12:04:03,936 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:03,937 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:03,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 12:04:03,937 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1497467613, now seen corresponding path program 2 times [2022-12-12 12:04:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:03,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138451285] [2022-12-12 12:04:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:04,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:04,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138451285] [2022-12-12 12:04:04,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138451285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:04,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:04,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:04,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732157857] [2022-12-12 12:04:04,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:04,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:04,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:04,034 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 85 [2022-12-12 12:04:04,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 227 transitions, 1615 flow. Second operand has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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) [2022-12-12 12:04:04,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:04,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 85 [2022-12-12 12:04:04,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:04,283 INFO L130 PetriNetUnfolder]: 1047/2620 cut-off events. [2022-12-12 12:04:04,284 INFO L131 PetriNetUnfolder]: For 882/1708 co-relation queries the response was YES. [2022-12-12 12:04:04,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8590 conditions, 2620 events. 1047/2620 cut-off events. For 882/1708 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 24576 event pairs, 2 based on Foata normal form. 19/2424 useless extension candidates. Maximal degree in co-relation 8542. Up to 605 conditions per place. [2022-12-12 12:04:04,295 INFO L137 encePairwiseOnDemand]: 78/85 looper letters, 42 selfloop transitions, 19 changer transitions 66/247 dead transitions. [2022-12-12 12:04:04,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 247 transitions, 1965 flow [2022-12-12 12:04:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 12:04:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 12:04:04,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 554 transitions. [2022-12-12 12:04:04,297 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8147058823529412 [2022-12-12 12:04:04,300 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 48 predicate places. [2022-12-12 12:04:04,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 247 transitions, 1965 flow [2022-12-12 12:04:04,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 247 transitions, 1957 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-12 12:04:04,306 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 247 transitions, 1957 flow [2022-12-12 12:04:04,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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) [2022-12-12 12:04:04,307 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:04,307 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:04,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 12:04:04,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:04:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1779689779, now seen corresponding path program 3 times [2022-12-12 12:04:04,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:04,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746741500] [2022-12-12 12:04:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:04,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:04,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746741500] [2022-12-12 12:04:04,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746741500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:04,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:04,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:04:04,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813306409] [2022-12-12 12:04:04,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:04,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:04:04,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:04:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:04:04,452 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 12:04:04,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 247 transitions, 1957 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-12-12 12:04:04,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:04,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 12:04:04,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:04,794 INFO L130 PetriNetUnfolder]: 1282/3306 cut-off events. [2022-12-12 12:04:04,794 INFO L131 PetriNetUnfolder]: For 1278/1952 co-relation queries the response was YES. [2022-12-12 12:04:04,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10884 conditions, 3306 events. 1282/3306 cut-off events. For 1278/1952 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 32917 event pairs, 2 based on Foata normal form. 31/3104 useless extension candidates. Maximal degree in co-relation 10833. Up to 737 conditions per place. [2022-12-12 12:04:04,812 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 0 selfloop transitions, 0 changer transitions 259/259 dead transitions. [2022-12-12 12:04:04,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 259 transitions, 2307 flow [2022-12-12 12:04:04,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 12:04:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 12:04:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 728 transitions. [2022-12-12 12:04:04,814 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7786096256684492 [2022-12-12 12:04:04,815 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 56 predicate places. [2022-12-12 12:04:04,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 259 transitions, 2307 flow [2022-12-12 12:04:04,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 259 transitions, 2124 flow, removed 80 selfloop flow, removed 2 redundant places. [2022-12-12 12:04:04,821 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 259 transitions, 2124 flow [2022-12-12 12:04:04,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-12-12 12:04:04,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 12:04:04,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 12:04:04,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 12:04:04,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 12:04:04,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 12:04:04,825 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:04,827 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:04:04,827 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:04:04,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:04:04 BasicIcfg [2022-12-12 12:04:04,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:04:04,832 INFO L158 Benchmark]: Toolchain (without parser) took 5371.04ms. Allocated memory was 178.3MB in the beginning and 398.5MB in the end (delta: 220.2MB). Free memory was 152.9MB in the beginning and 297.4MB in the end (delta: -144.6MB). Peak memory consumption was 75.6MB. Max. memory is 8.0GB. [2022-12-12 12:04:04,832 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:04:04,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.34ms. Allocated memory is still 178.3MB. Free memory was 152.4MB in the beginning and 128.9MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 12:04:04,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.82ms. Allocated memory is still 178.3MB. Free memory was 128.9MB in the beginning and 126.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:04:04,833 INFO L158 Benchmark]: Boogie Preprocessor took 28.48ms. Allocated memory is still 178.3MB. Free memory was 126.8MB in the beginning and 125.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 12:04:04,833 INFO L158 Benchmark]: RCFGBuilder took 299.08ms. Allocated memory is still 178.3MB. Free memory was 125.6MB in the beginning and 151.6MB in the end (delta: -26.0MB). Peak memory consumption was 14.9MB. Max. memory is 8.0GB. [2022-12-12 12:04:04,834 INFO L158 Benchmark]: TraceAbstraction took 4537.26ms. Allocated memory was 178.3MB in the beginning and 398.5MB in the end (delta: 220.2MB). Free memory was 150.5MB in the beginning and 297.4MB in the end (delta: -146.9MB). Peak memory consumption was 73.3MB. Max. memory is 8.0GB. [2022-12-12 12:04:04,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 452.34ms. Allocated memory is still 178.3MB. Free memory was 152.4MB in the beginning and 128.9MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.82ms. Allocated memory is still 178.3MB. Free memory was 128.9MB in the beginning and 126.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.48ms. Allocated memory is still 178.3MB. Free memory was 126.8MB in the beginning and 125.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 299.08ms. Allocated memory is still 178.3MB. Free memory was 125.6MB in the beginning and 151.6MB in the end (delta: -26.0MB). Peak memory consumption was 14.9MB. Max. memory is 8.0GB. * TraceAbstraction took 4537.26ms. Allocated memory was 178.3MB in the beginning and 398.5MB in the end (delta: 220.2MB). Free memory was 150.5MB in the beginning and 297.4MB in the end (delta: -146.9MB). Peak memory consumption was 73.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 461 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 461 mSDsluCounter, 539 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 407 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 685 IncrementalHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 132 mSDtfsCounter, 685 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2242occurred in iteration=3, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 438 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 511 NumberOfCodeBlocks, 511 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 502 ConstructedInterpolants, 0 QuantifiedInterpolants, 2130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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! [2022-12-12 12:04:04,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...