/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:58:54,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:58:54,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:58:54,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:58:54,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:58:54,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:58:54,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:58:54,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:58:54,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:58:54,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:58:54,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:58:54,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:58:54,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:58:54,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:58:54,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:58:54,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:58:54,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:58:54,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:58:54,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:58:54,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:58:54,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:58:54,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:58:54,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:58:54,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:58:54,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:58:54,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:58:54,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:58:54,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:58:54,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:58:54,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:58:54,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:58:54,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:58:54,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:58:54,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:58:54,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:58:54,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:58:54,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:58:54,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:58:54,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:58:54,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:58:54,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:58:54,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 20:58:54,904 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:58:54,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:58:54,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:58:54,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:58:54,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:58:54,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:58:54,909 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:58:54,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:58:54,909 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:58:54,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:58:54,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:58:54,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:58:54,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:58:54,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:58:54,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:58:54,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:58:54,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:58:54,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:58:54,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:58:54,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:58:54,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:58:54,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:58:54,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:58:54,911 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:58:55,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:58:55,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:58:55,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:58:55,051 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:58:55,051 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:58:55,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-01-27 20:58:55,889 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:58:56,023 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:58:56,024 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-01-27 20:58:56,028 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2bca59de/9790ede252a241ee9361a6766a4d1c30/FLAG901dd1e8a [2023-01-27 20:58:56,037 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2bca59de/9790ede252a241ee9361a6766a4d1c30 [2023-01-27 20:58:56,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:58:56,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:58:56,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:58:56,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:58:56,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:58:56,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7f1bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56, skipping insertion in model container [2023-01-27 20:58:56,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:58:56,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:58:56,210 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2023-01-27 20:58:56,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:58:56,223 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:58:56,252 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2023-01-27 20:58:56,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:58:56,261 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:58:56,262 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:58:56,267 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:58:56,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56 WrapperNode [2023-01-27 20:58:56,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:58:56,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:58:56,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:58:56,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:58:56,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,311 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2023-01-27 20:58:56,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:58:56,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:58:56,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:58:56,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:58:56,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:58:56,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:58:56,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:58:56,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:58:56,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (1/1) ... [2023-01-27 20:58:56,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:58:56,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:58:56,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:58:56,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:58:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:58:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:58:56,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:58:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:58:56,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:58:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:58:56,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:58:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:58:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:58:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:58:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 20:58:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 20:58:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:58:56,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:58:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:58:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:58:56,394 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:58:56,456 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:58:56,457 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:58:56,648 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:58:56,706 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:58:56,707 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 20:58:56,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:58:56 BoogieIcfgContainer [2023-01-27 20:58:56,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:58:56,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:58:56,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:58:56,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:58:56,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:58:56" (1/3) ... [2023-01-27 20:58:56,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306a79d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:58:56, skipping insertion in model container [2023-01-27 20:58:56,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:58:56" (2/3) ... [2023-01-27 20:58:56,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306a79d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:58:56, skipping insertion in model container [2023-01-27 20:58:56,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:58:56" (3/3) ... [2023-01-27 20:58:56,715 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-01-27 20:58:56,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:58:56,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:58:56,725 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:58:56,765 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:58:56,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 242 flow [2023-01-27 20:58:56,824 INFO L130 PetriNetUnfolder]: 7/106 cut-off events. [2023-01-27 20:58:56,824 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:58:56,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 7/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-27 20:58:56,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 242 flow [2023-01-27 20:58:56,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 96 transitions, 210 flow [2023-01-27 20:58:56,834 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:58:56,840 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 96 transitions, 210 flow [2023-01-27 20:58:56,841 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 96 transitions, 210 flow [2023-01-27 20:58:56,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 96 transitions, 210 flow [2023-01-27 20:58:56,860 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2023-01-27 20:58:56,860 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:58:56,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 7/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-27 20:58:56,862 INFO L119 LiptonReduction]: Number of co-enabled transitions 1370 [2023-01-27 20:58:59,405 INFO L134 LiptonReduction]: Checked pairs total: 1979 [2023-01-27 20:58:59,406 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-01-27 20:58:59,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:58:59,434 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;@b25ffbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:58:59,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:58:59,438 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-01-27 20:58:59,438 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:58:59,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:58:59,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:58:59,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:58:59,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:58:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -771544553, now seen corresponding path program 1 times [2023-01-27 20:58:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:58:59,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81683734] [2023-01-27 20:58:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:58:59,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:58:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:58:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:58:59,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:58:59,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81683734] [2023-01-27 20:58:59,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81683734] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:58:59,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:58:59,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:58:59,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126386311] [2023-01-27 20:58:59,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:58:59,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:58:59,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:59:00,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:59:00,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-27 20:59:00,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:00,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-27 20:59:00,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:00,239 INFO L130 PetriNetUnfolder]: 433/696 cut-off events. [2023-01-27 20:59:00,240 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-01-27 20:59:00,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 696 events. 433/696 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2628 event pairs, 74 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 1212. Up to 359 conditions per place. [2023-01-27 20:59:00,244 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 55 selfloop transitions, 5 changer transitions 22/82 dead transitions. [2023-01-27 20:59:00,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 82 transitions, 382 flow [2023-01-27 20:59:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:59:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:59:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 665 transitions. [2023-01-27 20:59:00,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2023-01-27 20:59:00,257 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 665 transitions. [2023-01-27 20:59:00,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 665 transitions. [2023-01-27 20:59:00,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:00,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 665 transitions. [2023-01-27 20:59:00,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,267 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,268 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 62 flow. Second operand 7 states and 665 transitions. [2023-01-27 20:59:00,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 82 transitions, 382 flow [2023-01-27 20:59:00,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 82 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:59:00,272 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2023-01-27 20:59:00,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-27 20:59:00,275 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-27 20:59:00,275 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2023-01-27 20:59:00,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:00,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:00,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:59:00,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:00,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1549483573, now seen corresponding path program 2 times [2023-01-27 20:59:00,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:00,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894070545] [2023-01-27 20:59:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:00,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894070545] [2023-01-27 20:59:00,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894070545] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:59:00,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:59:00,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:59:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865213868] [2023-01-27 20:59:00,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:59:00,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:59:00,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:59:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:59:00,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-01-27 20:59:00,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:00,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-01-27 20:59:00,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:00,590 INFO L130 PetriNetUnfolder]: 260/443 cut-off events. [2023-01-27 20:59:00,590 INFO L131 PetriNetUnfolder]: For 497/497 co-relation queries the response was YES. [2023-01-27 20:59:00,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 443 events. 260/443 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1576 event pairs, 21 based on Foata normal form. 32/475 useless extension candidates. Maximal degree in co-relation 940. Up to 239 conditions per place. [2023-01-27 20:59:00,593 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-01-27 20:59:00,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 280 flow [2023-01-27 20:59:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:59:00,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:59:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-01-27 20:59:00,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066489361702128 [2023-01-27 20:59:00,595 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-01-27 20:59:00,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-01-27 20:59:00,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:00,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-01-27 20:59:00,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,597 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 4 states and 381 transitions. [2023-01-27 20:59:00,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 280 flow [2023-01-27 20:59:00,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 265 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 20:59:00,599 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 124 flow [2023-01-27 20:59:00,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-01-27 20:59:00,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-27 20:59:00,600 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 124 flow [2023-01-27 20:59:00,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:00,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:00,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:59:00,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:00,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:00,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1618678763, now seen corresponding path program 3 times [2023-01-27 20:59:00,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:00,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022649036] [2023-01-27 20:59:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:00,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:00,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:00,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022649036] [2023-01-27 20:59:00,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022649036] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:59:00,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:59:00,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:59:00,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095364426] [2023-01-27 20:59:00,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:59:00,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:59:00,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:00,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:59:00,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:59:00,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-01-27 20:59:00,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:00,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-01-27 20:59:00,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:00,853 INFO L130 PetriNetUnfolder]: 215/378 cut-off events. [2023-01-27 20:59:00,853 INFO L131 PetriNetUnfolder]: For 443/443 co-relation queries the response was YES. [2023-01-27 20:59:00,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 378 events. 215/378 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1264 event pairs, 37 based on Foata normal form. 20/398 useless extension candidates. Maximal degree in co-relation 907. Up to 229 conditions per place. [2023-01-27 20:59:00,856 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 36 selfloop transitions, 7 changer transitions 2/45 dead transitions. [2023-01-27 20:59:00,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 293 flow [2023-01-27 20:59:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:59:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:59:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-01-27 20:59:00,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013297872340425 [2023-01-27 20:59:00,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-01-27 20:59:00,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-01-27 20:59:00,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:00,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-01-27 20:59:00,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,860 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 124 flow. Second operand 4 states and 377 transitions. [2023-01-27 20:59:00,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 293 flow [2023-01-27 20:59:00,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:59:00,865 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 156 flow [2023-01-27 20:59:00,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-01-27 20:59:00,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-01-27 20:59:00,868 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 156 flow [2023-01-27 20:59:00,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:00,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:00,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:00,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:59:00,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:00,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash 994832979, now seen corresponding path program 4 times [2023-01-27 20:59:00,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232259212] [2023-01-27 20:59:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:01,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:01,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232259212] [2023-01-27 20:59:01,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232259212] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:59:01,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:59:01,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:59:01,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355046463] [2023-01-27 20:59:01,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:59:01,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:59:01,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:01,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:59:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:59:01,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-01-27 20:59:01,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:01,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-01-27 20:59:01,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:01,165 INFO L130 PetriNetUnfolder]: 221/380 cut-off events. [2023-01-27 20:59:01,165 INFO L131 PetriNetUnfolder]: For 722/722 co-relation queries the response was YES. [2023-01-27 20:59:01,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 380 events. 221/380 cut-off events. For 722/722 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1256 event pairs, 25 based on Foata normal form. 12/392 useless extension candidates. Maximal degree in co-relation 901. Up to 152 conditions per place. [2023-01-27 20:59:01,167 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 42 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-01-27 20:59:01,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 364 flow [2023-01-27 20:59:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:59:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:59:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2023-01-27 20:59:01,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-27 20:59:01,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2023-01-27 20:59:01,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2023-01-27 20:59:01,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:01,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2023-01-27 20:59:01,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,176 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,176 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 156 flow. Second operand 5 states and 470 transitions. [2023-01-27 20:59:01,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 364 flow [2023-01-27 20:59:01,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 350 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 20:59:01,178 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 202 flow [2023-01-27 20:59:01,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-01-27 20:59:01,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-01-27 20:59:01,180 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 202 flow [2023-01-27 20:59:01,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:01,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:01,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 20:59:01,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:01,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1308365975, now seen corresponding path program 5 times [2023-01-27 20:59:01,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:01,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875599667] [2023-01-27 20:59:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:01,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875599667] [2023-01-27 20:59:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875599667] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:59:01,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:59:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:59:01,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427970507] [2023-01-27 20:59:01,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:59:01,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:59:01,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:59:01,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:59:01,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-27 20:59:01,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:01,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-27 20:59:01,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:01,413 INFO L130 PetriNetUnfolder]: 211/348 cut-off events. [2023-01-27 20:59:01,413 INFO L131 PetriNetUnfolder]: For 949/949 co-relation queries the response was YES. [2023-01-27 20:59:01,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 348 events. 211/348 cut-off events. For 949/949 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1092 event pairs, 25 based on Foata normal form. 10/358 useless extension candidates. Maximal degree in co-relation 981. Up to 246 conditions per place. [2023-01-27 20:59:01,416 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 34 selfloop transitions, 3 changer transitions 18/55 dead transitions. [2023-01-27 20:59:01,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 416 flow [2023-01-27 20:59:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:59:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:59:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 631 transitions. [2023-01-27 20:59:01,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.479483282674772 [2023-01-27 20:59:01,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 631 transitions. [2023-01-27 20:59:01,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 631 transitions. [2023-01-27 20:59:01,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:01,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 631 transitions. [2023-01-27 20:59:01,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,422 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,422 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 202 flow. Second operand 7 states and 631 transitions. [2023-01-27 20:59:01,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 416 flow [2023-01-27 20:59:01,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:59:01,425 INFO L231 Difference]: Finished difference. Result has 52 places, 30 transitions, 168 flow [2023-01-27 20:59:01,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2023-01-27 20:59:01,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2023-01-27 20:59:01,427 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 168 flow [2023-01-27 20:59:01,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:01,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:01,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 20:59:01,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:01,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 639520331, now seen corresponding path program 1 times [2023-01-27 20:59:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:01,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647747864] [2023-01-27 20:59:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:01,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:01,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:01,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647747864] [2023-01-27 20:59:01,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647747864] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:59:01,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:59:01,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:59:01,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904697035] [2023-01-27 20:59:01,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:59:01,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:59:01,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:01,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:59:01,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:59:01,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-27 20:59:01,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:01,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-27 20:59:01,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:01,734 INFO L130 PetriNetUnfolder]: 324/523 cut-off events. [2023-01-27 20:59:01,734 INFO L131 PetriNetUnfolder]: For 1303/1303 co-relation queries the response was YES. [2023-01-27 20:59:01,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 523 events. 324/523 cut-off events. For 1303/1303 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1804 event pairs, 14 based on Foata normal form. 16/539 useless extension candidates. Maximal degree in co-relation 2014. Up to 187 conditions per place. [2023-01-27 20:59:01,738 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 66 selfloop transitions, 37 changer transitions 0/103 dead transitions. [2023-01-27 20:59:01,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 103 transitions, 808 flow [2023-01-27 20:59:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:59:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:59:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 836 transitions. [2023-01-27 20:59:01,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2023-01-27 20:59:01,740 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 836 transitions. [2023-01-27 20:59:01,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 836 transitions. [2023-01-27 20:59:01,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:01,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 836 transitions. [2023-01-27 20:59:01,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.88888888888889) internal successors, (836), 9 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,743 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,743 INFO L175 Difference]: Start difference. First operand has 52 places, 30 transitions, 168 flow. Second operand 9 states and 836 transitions. [2023-01-27 20:59:01,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 103 transitions, 808 flow [2023-01-27 20:59:01,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 103 transitions, 752 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-01-27 20:59:01,748 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 543 flow [2023-01-27 20:59:01,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=543, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-01-27 20:59:01,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2023-01-27 20:59:01,750 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 543 flow [2023-01-27 20:59:01,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:01,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:01,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:59:01,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:01,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2078671299, now seen corresponding path program 2 times [2023-01-27 20:59:01,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:01,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657658758] [2023-01-27 20:59:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:01,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:01,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657658758] [2023-01-27 20:59:01,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657658758] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:59:01,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:59:01,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:59:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645593835] [2023-01-27 20:59:01,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:59:01,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:59:01,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:59:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:59:01,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-27 20:59:01,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 543 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:01,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:01,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-27 20:59:01,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:02,109 INFO L130 PetriNetUnfolder]: 474/831 cut-off events. [2023-01-27 20:59:02,109 INFO L131 PetriNetUnfolder]: For 5344/5344 co-relation queries the response was YES. [2023-01-27 20:59:02,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4420 conditions, 831 events. 474/831 cut-off events. For 5344/5344 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3449 event pairs, 35 based on Foata normal form. 20/851 useless extension candidates. Maximal degree in co-relation 3409. Up to 299 conditions per place. [2023-01-27 20:59:02,115 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 105 selfloop transitions, 63 changer transitions 0/168 dead transitions. [2023-01-27 20:59:02,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 168 transitions, 1712 flow [2023-01-27 20:59:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:59:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:59:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 850 transitions. [2023-01-27 20:59:02,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023640661938534 [2023-01-27 20:59:02,118 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 850 transitions. [2023-01-27 20:59:02,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 850 transitions. [2023-01-27 20:59:02,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:02,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 850 transitions. [2023-01-27 20:59:02,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.44444444444444) internal successors, (850), 9 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,122 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,122 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 543 flow. Second operand 9 states and 850 transitions. [2023-01-27 20:59:02,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 168 transitions, 1712 flow [2023-01-27 20:59:02,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 168 transitions, 1694 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-27 20:59:02,133 INFO L231 Difference]: Finished difference. Result has 71 places, 106 transitions, 1309 flow [2023-01-27 20:59:02,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1309, PETRI_PLACES=71, PETRI_TRANSITIONS=106} [2023-01-27 20:59:02,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-01-27 20:59:02,134 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 106 transitions, 1309 flow [2023-01-27 20:59:02,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:02,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:02,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:59:02,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:02,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash -37646305, now seen corresponding path program 3 times [2023-01-27 20:59:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:02,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579832234] [2023-01-27 20:59:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:02,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:02,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:02,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579832234] [2023-01-27 20:59:02,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579832234] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:59:02,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:59:02,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:59:02,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786411807] [2023-01-27 20:59:02,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:59:02,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:59:02,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:59:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:59:02,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-01-27 20:59:02,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 106 transitions, 1309 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:02,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-01-27 20:59:02,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:02,432 INFO L130 PetriNetUnfolder]: 553/944 cut-off events. [2023-01-27 20:59:02,433 INFO L131 PetriNetUnfolder]: For 10667/10667 co-relation queries the response was YES. [2023-01-27 20:59:02,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6188 conditions, 944 events. 553/944 cut-off events. For 10667/10667 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3911 event pairs, 4 based on Foata normal form. 36/980 useless extension candidates. Maximal degree in co-relation 5161. Up to 458 conditions per place. [2023-01-27 20:59:02,439 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 100 selfloop transitions, 42 changer transitions 40/182 dead transitions. [2023-01-27 20:59:02,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 182 transitions, 2517 flow [2023-01-27 20:59:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:59:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:59:02,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 826 transitions. [2023-01-27 20:59:02,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48817966903073284 [2023-01-27 20:59:02,441 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 826 transitions. [2023-01-27 20:59:02,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 826 transitions. [2023-01-27 20:59:02,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:02,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 826 transitions. [2023-01-27 20:59:02,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,445 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,445 INFO L175 Difference]: Start difference. First operand has 71 places, 106 transitions, 1309 flow. Second operand 9 states and 826 transitions. [2023-01-27 20:59:02,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 182 transitions, 2517 flow [2023-01-27 20:59:02,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 182 transitions, 2387 flow, removed 65 selfloop flow, removed 0 redundant places. [2023-01-27 20:59:02,465 INFO L231 Difference]: Finished difference. Result has 85 places, 107 transitions, 1459 flow [2023-01-27 20:59:02,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1459, PETRI_PLACES=85, PETRI_TRANSITIONS=107} [2023-01-27 20:59:02,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2023-01-27 20:59:02,465 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 107 transitions, 1459 flow [2023-01-27 20:59:02,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:02,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:02,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:59:02,466 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:02,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 297645157, now seen corresponding path program 4 times [2023-01-27 20:59:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343819770] [2023-01-27 20:59:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343819770] [2023-01-27 20:59:02,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343819770] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:59:02,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:59:02,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:59:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268661232] [2023-01-27 20:59:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:59:02,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:59:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:59:02,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:59:02,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 188 [2023-01-27 20:59:02,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 107 transitions, 1459 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:02,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 188 [2023-01-27 20:59:02,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:02,809 INFO L130 PetriNetUnfolder]: 634/1123 cut-off events. [2023-01-27 20:59:02,810 INFO L131 PetriNetUnfolder]: For 15019/15019 co-relation queries the response was YES. [2023-01-27 20:59:02,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7673 conditions, 1123 events. 634/1123 cut-off events. For 15019/15019 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5263 event pairs, 28 based on Foata normal form. 32/1155 useless extension candidates. Maximal degree in co-relation 6246. Up to 660 conditions per place. [2023-01-27 20:59:02,817 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 116 selfloop transitions, 15 changer transitions 95/226 dead transitions. [2023-01-27 20:59:02,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 226 transitions, 3464 flow [2023-01-27 20:59:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:59:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:59:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 723 transitions. [2023-01-27 20:59:02,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480718085106383 [2023-01-27 20:59:02,819 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 723 transitions. [2023-01-27 20:59:02,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 723 transitions. [2023-01-27 20:59:02,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:02,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 723 transitions. [2023-01-27 20:59:02,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,822 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,822 INFO L175 Difference]: Start difference. First operand has 85 places, 107 transitions, 1459 flow. Second operand 8 states and 723 transitions. [2023-01-27 20:59:02,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 226 transitions, 3464 flow [2023-01-27 20:59:02,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 226 transitions, 3320 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-01-27 20:59:02,850 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 1643 flow [2023-01-27 20:59:02,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1643, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2023-01-27 20:59:02,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-01-27 20:59:02,851 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 1643 flow [2023-01-27 20:59:02,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:02,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:02,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:02,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:59:02,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:02,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:02,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1132828558, now seen corresponding path program 1 times [2023-01-27 20:59:02,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:02,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126590605] [2023-01-27 20:59:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:02,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:02,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126590605] [2023-01-27 20:59:02,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126590605] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95978578] [2023-01-27 20:59:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:02,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:02,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:03,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:59:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:03,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:59:03,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:03,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:03,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95978578] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:03,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:03,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-27 20:59:03,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033540126] [2023-01-27 20:59:03,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:03,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:59:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:59:03,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:59:03,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 188 [2023-01-27 20:59:03,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions, 1643 flow. Second operand has 12 states, 12 states have (on average 84.83333333333333) internal successors, (1018), 12 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:03,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:03,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 188 [2023-01-27 20:59:03,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:03,944 INFO L130 PetriNetUnfolder]: 878/1523 cut-off events. [2023-01-27 20:59:03,944 INFO L131 PetriNetUnfolder]: For 21461/21461 co-relation queries the response was YES. [2023-01-27 20:59:03,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10923 conditions, 1523 events. 878/1523 cut-off events. For 21461/21461 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7460 event pairs, 15 based on Foata normal form. 52/1575 useless extension candidates. Maximal degree in co-relation 10243. Up to 461 conditions per place. [2023-01-27 20:59:03,953 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 130 selfloop transitions, 58 changer transitions 154/342 dead transitions. [2023-01-27 20:59:03,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 342 transitions, 5277 flow [2023-01-27 20:59:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 20:59:03,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 20:59:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1519 transitions. [2023-01-27 20:59:03,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47528160200250313 [2023-01-27 20:59:03,956 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1519 transitions. [2023-01-27 20:59:03,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1519 transitions. [2023-01-27 20:59:03,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:03,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1519 transitions. [2023-01-27 20:59:03,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 89.3529411764706) internal successors, (1519), 17 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:03,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 188.0) internal successors, (3384), 18 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:03,963 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 188.0) internal successors, (3384), 18 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:03,963 INFO L175 Difference]: Start difference. First operand has 92 places, 115 transitions, 1643 flow. Second operand 17 states and 1519 transitions. [2023-01-27 20:59:03,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 342 transitions, 5277 flow [2023-01-27 20:59:04,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 342 transitions, 4941 flow, removed 108 selfloop flow, removed 6 redundant places. [2023-01-27 20:59:04,011 INFO L231 Difference]: Finished difference. Result has 105 places, 133 transitions, 2036 flow [2023-01-27 20:59:04,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2036, PETRI_PLACES=105, PETRI_TRANSITIONS=133} [2023-01-27 20:59:04,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2023-01-27 20:59:04,012 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 133 transitions, 2036 flow [2023-01-27 20:59:04,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 84.83333333333333) internal successors, (1018), 12 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:04,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:04,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:04,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:59:04,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-27 20:59:04,220 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:04,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:04,221 INFO L85 PathProgramCache]: Analyzing trace with hash -452623677, now seen corresponding path program 5 times [2023-01-27 20:59:04,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:04,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299739283] [2023-01-27 20:59:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:04,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:04,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299739283] [2023-01-27 20:59:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299739283] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067110231] [2023-01-27 20:59:04,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:59:04,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:04,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:04,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:04,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:59:04,481 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 20:59:04,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:59:04,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 20:59:04,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:04,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:04,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067110231] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:04,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:04,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-27 20:59:04,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088378192] [2023-01-27 20:59:04,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:04,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 20:59:04,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:04,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 20:59:04,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-01-27 20:59:04,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 188 [2023-01-27 20:59:04,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 133 transitions, 2036 flow. Second operand has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:04,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:04,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 188 [2023-01-27 20:59:04,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:05,851 INFO L130 PetriNetUnfolder]: 1744/3011 cut-off events. [2023-01-27 20:59:05,851 INFO L131 PetriNetUnfolder]: For 58257/58257 co-relation queries the response was YES. [2023-01-27 20:59:05,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23138 conditions, 3011 events. 1744/3011 cut-off events. For 58257/58257 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16723 event pairs, 17 based on Foata normal form. 80/3091 useless extension candidates. Maximal degree in co-relation 21517. Up to 981 conditions per place. [2023-01-27 20:59:05,875 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 220 selfloop transitions, 152 changer transitions 269/641 dead transitions. [2023-01-27 20:59:05,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 641 transitions, 10471 flow [2023-01-27 20:59:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-27 20:59:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-27 20:59:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3117 transitions. [2023-01-27 20:59:05,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737082066869301 [2023-01-27 20:59:05,880 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3117 transitions. [2023-01-27 20:59:05,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3117 transitions. [2023-01-27 20:59:05,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:05,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3117 transitions. [2023-01-27 20:59:05,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 89.05714285714286) internal successors, (3117), 35 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:05,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 188.0) internal successors, (6768), 36 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:05,892 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 188.0) internal successors, (6768), 36 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:05,892 INFO L175 Difference]: Start difference. First operand has 105 places, 133 transitions, 2036 flow. Second operand 35 states and 3117 transitions. [2023-01-27 20:59:05,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 641 transitions, 10471 flow [2023-01-27 20:59:06,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 641 transitions, 9455 flow, removed 356 selfloop flow, removed 11 redundant places. [2023-01-27 20:59:06,039 INFO L231 Difference]: Finished difference. Result has 137 places, 237 transitions, 4124 flow [2023-01-27 20:59:06,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4124, PETRI_PLACES=137, PETRI_TRANSITIONS=237} [2023-01-27 20:59:06,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2023-01-27 20:59:06,040 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 237 transitions, 4124 flow [2023-01-27 20:59:06,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:06,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:06,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:06,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 20:59:06,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-27 20:59:06,245 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:06,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:06,246 INFO L85 PathProgramCache]: Analyzing trace with hash 970370738, now seen corresponding path program 1 times [2023-01-27 20:59:06,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:06,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086606951] [2023-01-27 20:59:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:06,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:06,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:06,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086606951] [2023-01-27 20:59:06,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086606951] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:06,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132082339] [2023-01-27 20:59:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:06,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:06,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:06,554 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:06,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:59:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:06,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 20:59:06,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:06,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:07,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132082339] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:07,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:07,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-01-27 20:59:07,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963166849] [2023-01-27 20:59:07,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:07,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 20:59:07,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 20:59:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-01-27 20:59:07,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 20:59:07,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 237 transitions, 4124 flow. Second operand has 19 states, 19 states have (on average 82.05263157894737) internal successors, (1559), 19 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:07,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:07,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 20:59:07,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:08,766 INFO L130 PetriNetUnfolder]: 2044/3463 cut-off events. [2023-01-27 20:59:08,767 INFO L131 PetriNetUnfolder]: For 66373/66373 co-relation queries the response was YES. [2023-01-27 20:59:08,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26622 conditions, 3463 events. 2044/3463 cut-off events. For 66373/66373 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 19404 event pairs, 25 based on Foata normal form. 92/3555 useless extension candidates. Maximal degree in co-relation 26356. Up to 1199 conditions per place. [2023-01-27 20:59:08,792 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 261 selfloop transitions, 201 changer transitions 246/708 dead transitions. [2023-01-27 20:59:08,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 708 transitions, 11569 flow [2023-01-27 20:59:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-27 20:59:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-27 20:59:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3393 transitions. [2023-01-27 20:59:08,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627659574468085 [2023-01-27 20:59:08,796 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3393 transitions. [2023-01-27 20:59:08,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3393 transitions. [2023-01-27 20:59:08,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:08,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3393 transitions. [2023-01-27 20:59:08,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 87.0) internal successors, (3393), 39 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:08,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 188.0) internal successors, (7520), 40 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:08,807 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 188.0) internal successors, (7520), 40 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:08,807 INFO L175 Difference]: Start difference. First operand has 137 places, 237 transitions, 4124 flow. Second operand 39 states and 3393 transitions. [2023-01-27 20:59:08,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 708 transitions, 11569 flow [2023-01-27 20:59:09,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 708 transitions, 9692 flow, removed 916 selfloop flow, removed 20 redundant places. [2023-01-27 20:59:09,064 INFO L231 Difference]: Finished difference. Result has 151 places, 280 transitions, 4330 flow [2023-01-27 20:59:09,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4330, PETRI_PLACES=151, PETRI_TRANSITIONS=280} [2023-01-27 20:59:09,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2023-01-27 20:59:09,065 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 280 transitions, 4330 flow [2023-01-27 20:59:09,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 82.05263157894737) internal successors, (1559), 19 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:09,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:09,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:09,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:59:09,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:09,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:09,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:09,270 INFO L85 PathProgramCache]: Analyzing trace with hash 204084687, now seen corresponding path program 2 times [2023-01-27 20:59:09,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:09,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413935785] [2023-01-27 20:59:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:09,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:09,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:09,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413935785] [2023-01-27 20:59:09,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413935785] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:09,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688617672] [2023-01-27 20:59:09,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:59:09,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:09,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:09,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:09,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:59:09,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:59:09,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:59:09,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 20:59:09,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:09,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688617672] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:10,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:10,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 20:59:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515197462] [2023-01-27 20:59:10,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:10,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 20:59:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 20:59:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:59:10,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 20:59:10,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 280 transitions, 4330 flow. Second operand has 18 states, 18 states have (on average 82.22222222222223) internal successors, (1480), 18 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:10,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:10,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 20:59:10,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:12,137 INFO L130 PetriNetUnfolder]: 3580/6013 cut-off events. [2023-01-27 20:59:12,138 INFO L131 PetriNetUnfolder]: For 90251/90251 co-relation queries the response was YES. [2023-01-27 20:59:12,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43368 conditions, 6013 events. 3580/6013 cut-off events. For 90251/90251 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 36641 event pairs, 35 based on Foata normal form. 196/6209 useless extension candidates. Maximal degree in co-relation 42664. Up to 2053 conditions per place. [2023-01-27 20:59:12,171 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 328 selfloop transitions, 256 changer transitions 503/1087 dead transitions. [2023-01-27 20:59:12,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1087 transitions, 18251 flow [2023-01-27 20:59:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-27 20:59:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-27 20:59:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3756 transitions. [2023-01-27 20:59:12,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646214745175656 [2023-01-27 20:59:12,175 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3756 transitions. [2023-01-27 20:59:12,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3756 transitions. [2023-01-27 20:59:12,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:12,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3756 transitions. [2023-01-27 20:59:12,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 87.34883720930233) internal successors, (3756), 43 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:12,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 188.0) internal successors, (8272), 44 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:12,187 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 188.0) internal successors, (8272), 44 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:12,187 INFO L175 Difference]: Start difference. First operand has 151 places, 280 transitions, 4330 flow. Second operand 43 states and 3756 transitions. [2023-01-27 20:59:12,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1087 transitions, 18251 flow [2023-01-27 20:59:12,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 1087 transitions, 16866 flow, removed 561 selfloop flow, removed 23 redundant places. [2023-01-27 20:59:12,708 INFO L231 Difference]: Finished difference. Result has 176 places, 405 transitions, 6928 flow [2023-01-27 20:59:12,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6928, PETRI_PLACES=176, PETRI_TRANSITIONS=405} [2023-01-27 20:59:12,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2023-01-27 20:59:12,708 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 405 transitions, 6928 flow [2023-01-27 20:59:12,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 82.22222222222223) internal successors, (1480), 18 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:12,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:12,709 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:12,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:59:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:12,909 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:12,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1434994220, now seen corresponding path program 3 times [2023-01-27 20:59:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:12,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122051519] [2023-01-27 20:59:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122051519] [2023-01-27 20:59:13,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122051519] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:13,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940064268] [2023-01-27 20:59:13,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:59:13,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:13,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:13,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:13,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:59:13,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-27 20:59:13,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:59:13,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 20:59:13,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:13,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:14,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940064268] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:14,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:14,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-27 20:59:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284684974] [2023-01-27 20:59:14,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:14,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 20:59:14,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 20:59:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-01-27 20:59:14,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 188 [2023-01-27 20:59:14,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 405 transitions, 6928 flow. Second operand has 20 states, 20 states have (on average 80.2) internal successors, (1604), 20 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:14,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:14,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 188 [2023-01-27 20:59:14,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:17,451 INFO L130 PetriNetUnfolder]: 4166/6897 cut-off events. [2023-01-27 20:59:17,451 INFO L131 PetriNetUnfolder]: For 132654/132654 co-relation queries the response was YES. [2023-01-27 20:59:17,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54213 conditions, 6897 events. 4166/6897 cut-off events. For 132654/132654 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 41443 event pairs, 73 based on Foata normal form. 226/7123 useless extension candidates. Maximal degree in co-relation 52696. Up to 2409 conditions per place. [2023-01-27 20:59:17,493 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 530 selfloop transitions, 335 changer transitions 329/1194 dead transitions. [2023-01-27 20:59:17,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 1194 transitions, 22299 flow [2023-01-27 20:59:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-01-27 20:59:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-01-27 20:59:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 6507 transitions. [2023-01-27 20:59:17,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44373977086743044 [2023-01-27 20:59:17,499 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 6507 transitions. [2023-01-27 20:59:17,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 6507 transitions. [2023-01-27 20:59:17,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:17,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 6507 transitions. [2023-01-27 20:59:17,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 83.42307692307692) internal successors, (6507), 78 states have internal predecessors, (6507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:17,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 188.0) internal successors, (14852), 79 states have internal predecessors, (14852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:17,517 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 188.0) internal successors, (14852), 79 states have internal predecessors, (14852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:17,517 INFO L175 Difference]: Start difference. First operand has 176 places, 405 transitions, 6928 flow. Second operand 78 states and 6507 transitions. [2023-01-27 20:59:17,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 1194 transitions, 22299 flow [2023-01-27 20:59:18,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 1194 transitions, 19314 flow, removed 1461 selfloop flow, removed 21 redundant places. [2023-01-27 20:59:18,393 INFO L231 Difference]: Finished difference. Result has 261 places, 587 transitions, 10230 flow [2023-01-27 20:59:18,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=5955, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=10230, PETRI_PLACES=261, PETRI_TRANSITIONS=587} [2023-01-27 20:59:18,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2023-01-27 20:59:18,394 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 587 transitions, 10230 flow [2023-01-27 20:59:18,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 80.2) internal successors, (1604), 20 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:18,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:18,394 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:18,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 20:59:18,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-27 20:59:18,601 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:18,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1687850452, now seen corresponding path program 4 times [2023-01-27 20:59:18,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303929185] [2023-01-27 20:59:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:18,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:18,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:18,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303929185] [2023-01-27 20:59:18,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303929185] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629914001] [2023-01-27 20:59:18,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:59:18,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:18,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:18,998 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:19,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:59:19,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:59:19,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:59:19,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 20:59:19,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:19,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629914001] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:19,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-27 20:59:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511419169] [2023-01-27 20:59:19,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:19,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 20:59:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 20:59:19,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-01-27 20:59:19,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 20:59:19,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 587 transitions, 10230 flow. Second operand has 20 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:19,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:19,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 20:59:19,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:23,405 INFO L130 PetriNetUnfolder]: 5702/9503 cut-off events. [2023-01-27 20:59:23,406 INFO L131 PetriNetUnfolder]: For 293565/293565 co-relation queries the response was YES. [2023-01-27 20:59:23,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77428 conditions, 9503 events. 5702/9503 cut-off events. For 293565/293565 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 61103 event pairs, 107 based on Foata normal form. 186/9689 useless extension candidates. Maximal degree in co-relation 77305. Up to 3335 conditions per place. [2023-01-27 20:59:23,486 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 566 selfloop transitions, 443 changer transitions 416/1425 dead transitions. [2023-01-27 20:59:23,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 1425 transitions, 27148 flow [2023-01-27 20:59:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-01-27 20:59:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-01-27 20:59:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4442 transitions. [2023-01-27 20:59:23,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46328744263662913 [2023-01-27 20:59:23,490 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4442 transitions. [2023-01-27 20:59:23,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4442 transitions. [2023-01-27 20:59:23,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:23,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4442 transitions. [2023-01-27 20:59:23,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 87.09803921568627) internal successors, (4442), 51 states have internal predecessors, (4442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:23,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 188.0) internal successors, (9776), 52 states have internal predecessors, (9776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:23,502 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 188.0) internal successors, (9776), 52 states have internal predecessors, (9776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:23,502 INFO L175 Difference]: Start difference. First operand has 261 places, 587 transitions, 10230 flow. Second operand 51 states and 4442 transitions. [2023-01-27 20:59:23,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 1425 transitions, 27148 flow [2023-01-27 20:59:25,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1425 transitions, 23738 flow, removed 1417 selfloop flow, removed 48 redundant places. [2023-01-27 20:59:25,551 INFO L231 Difference]: Finished difference. Result has 240 places, 768 transitions, 13605 flow [2023-01-27 20:59:25,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=9092, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=13605, PETRI_PLACES=240, PETRI_TRANSITIONS=768} [2023-01-27 20:59:25,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2023-01-27 20:59:25,552 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 768 transitions, 13605 flow [2023-01-27 20:59:25,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:25,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:25,552 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:25,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 20:59:25,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 20:59:25,753 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:25,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:25,753 INFO L85 PathProgramCache]: Analyzing trace with hash 815060047, now seen corresponding path program 6 times [2023-01-27 20:59:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:25,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733720930] [2023-01-27 20:59:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:25,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:26,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:26,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733720930] [2023-01-27 20:59:26,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733720930] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:26,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461174804] [2023-01-27 20:59:26,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:59:26,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:26,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:26,218 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:26,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 20:59:26,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-01-27 20:59:26,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:59:26,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 20:59:26,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:26,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:27,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461174804] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:27,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:27,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-27 20:59:27,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957489023] [2023-01-27 20:59:27,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 20:59:27,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 20:59:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-01-27 20:59:27,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 20:59:27,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 768 transitions, 13605 flow. Second operand has 24 states, 24 states have (on average 81.66666666666667) internal successors, (1960), 24 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:27,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:27,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 20:59:27,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:32,124 INFO L130 PetriNetUnfolder]: 7023/11730 cut-off events. [2023-01-27 20:59:32,124 INFO L131 PetriNetUnfolder]: For 213327/213327 co-relation queries the response was YES. [2023-01-27 20:59:32,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90057 conditions, 11730 events. 7023/11730 cut-off events. For 213327/213327 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 77954 event pairs, 157 based on Foata normal form. 318/12048 useless extension candidates. Maximal degree in co-relation 89934. Up to 4223 conditions per place. [2023-01-27 20:59:32,211 INFO L137 encePairwiseOnDemand]: 178/188 looper letters, 742 selfloop transitions, 497 changer transitions 459/1698 dead transitions. [2023-01-27 20:59:32,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1698 transitions, 32500 flow [2023-01-27 20:59:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-01-27 20:59:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-01-27 20:59:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 6424 transitions. [2023-01-27 20:59:32,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45560283687943265 [2023-01-27 20:59:32,216 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 6424 transitions. [2023-01-27 20:59:32,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 6424 transitions. [2023-01-27 20:59:32,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:32,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 6424 transitions. [2023-01-27 20:59:32,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 85.65333333333334) internal successors, (6424), 75 states have internal predecessors, (6424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:32,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 188.0) internal successors, (14288), 76 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:32,238 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 188.0) internal successors, (14288), 76 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:32,238 INFO L175 Difference]: Start difference. First operand has 240 places, 768 transitions, 13605 flow. Second operand 75 states and 6424 transitions. [2023-01-27 20:59:32,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1698 transitions, 32500 flow [2023-01-27 20:59:34,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1698 transitions, 31087 flow, removed 612 selfloop flow, removed 30 redundant places. [2023-01-27 20:59:34,421 INFO L231 Difference]: Finished difference. Result has 310 places, 1001 transitions, 18474 flow [2023-01-27 20:59:34,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=12540, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=18474, PETRI_PLACES=310, PETRI_TRANSITIONS=1001} [2023-01-27 20:59:34,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2023-01-27 20:59:34,422 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 1001 transitions, 18474 flow [2023-01-27 20:59:34,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 81.66666666666667) internal successors, (1960), 24 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:34,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:34,422 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:34,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 20:59:34,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:34,623 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:34,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1332058439, now seen corresponding path program 5 times [2023-01-27 20:59:34,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:34,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453512339] [2023-01-27 20:59:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:34,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:35,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:35,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453512339] [2023-01-27 20:59:35,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453512339] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:35,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127407915] [2023-01-27 20:59:35,025 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:59:35,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:35,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:35,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 20:59:35,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-01-27 20:59:35,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:59:35,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 20:59:35,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:35,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:36,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127407915] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:36,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:36,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-27 20:59:36,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991803456] [2023-01-27 20:59:36,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:36,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 20:59:36,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:36,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 20:59:36,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-01-27 20:59:36,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 20:59:36,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 1001 transitions, 18474 flow. Second operand has 24 states, 24 states have (on average 81.5) internal successors, (1956), 24 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:36,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:36,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 20:59:36,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:44,328 INFO L130 PetriNetUnfolder]: 10041/16834 cut-off events. [2023-01-27 20:59:44,329 INFO L131 PetriNetUnfolder]: For 612691/612691 co-relation queries the response was YES. [2023-01-27 20:59:44,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144704 conditions, 16834 events. 10041/16834 cut-off events. For 612691/612691 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 120073 event pairs, 145 based on Foata normal form. 360/17194 useless extension candidates. Maximal degree in co-relation 144552. Up to 5969 conditions per place. [2023-01-27 20:59:44,487 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 868 selfloop transitions, 758 changer transitions 904/2530 dead transitions. [2023-01-27 20:59:44,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 2530 transitions, 52825 flow [2023-01-27 20:59:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-01-27 20:59:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2023-01-27 20:59:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 7060 transitions. [2023-01-27 20:59:44,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46361964801681116 [2023-01-27 20:59:44,494 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 7060 transitions. [2023-01-27 20:59:44,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 7060 transitions. [2023-01-27 20:59:44,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:44,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 7060 transitions. [2023-01-27 20:59:44,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 87.1604938271605) internal successors, (7060), 81 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:44,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 188.0) internal successors, (15416), 82 states have internal predecessors, (15416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:44,512 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 188.0) internal successors, (15416), 82 states have internal predecessors, (15416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:44,512 INFO L175 Difference]: Start difference. First operand has 310 places, 1001 transitions, 18474 flow. Second operand 81 states and 7060 transitions. [2023-01-27 20:59:44,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 2530 transitions, 52825 flow [2023-01-27 20:59:50,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 2530 transitions, 46884 flow, removed 2928 selfloop flow, removed 51 redundant places. [2023-01-27 20:59:50,501 INFO L231 Difference]: Finished difference. Result has 328 places, 1269 transitions, 24924 flow [2023-01-27 20:59:50,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=17083, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=24924, PETRI_PLACES=328, PETRI_TRANSITIONS=1269} [2023-01-27 20:59:50,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2023-01-27 20:59:50,502 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 1269 transitions, 24924 flow [2023-01-27 20:59:50,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 81.5) internal successors, (1956), 24 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:50,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:59:50,503 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:59:50,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 20:59:50,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-27 20:59:50,707 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:59:50,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:59:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1456534505, now seen corresponding path program 6 times [2023-01-27 20:59:50,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:59:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330204144] [2023-01-27 20:59:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:59:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:59:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:59:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:51,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:59:51,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330204144] [2023-01-27 20:59:51,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330204144] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:59:51,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363456375] [2023-01-27 20:59:51,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:59:51,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:59:51,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:59:51,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:59:51,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 20:59:51,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-27 20:59:51,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:59:51,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 20:59:51,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:59:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:51,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:59:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:59:52,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363456375] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:59:52,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:59:52,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-27 20:59:52,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479514728] [2023-01-27 20:59:52,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:59:52,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 20:59:52,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:59:52,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 20:59:52,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-01-27 20:59:52,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 188 [2023-01-27 20:59:52,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 1269 transitions, 24924 flow. Second operand has 24 states, 24 states have (on average 79.66666666666667) internal successors, (1912), 24 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:52,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:59:52,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 188 [2023-01-27 20:59:52,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:59,547 INFO L130 PetriNetUnfolder]: 10916/18211 cut-off events. [2023-01-27 20:59:59,547 INFO L131 PetriNetUnfolder]: For 488894/488894 co-relation queries the response was YES. [2023-01-27 20:59:59,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151599 conditions, 18211 events. 10916/18211 cut-off events. For 488894/488894 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 130166 event pairs, 221 based on Foata normal form. 278/18489 useless extension candidates. Maximal degree in co-relation 151332. Up to 6497 conditions per place. [2023-01-27 20:59:59,975 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 922 selfloop transitions, 1022 changer transitions 332/2276 dead transitions. [2023-01-27 20:59:59,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 2276 transitions, 47921 flow [2023-01-27 20:59:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-01-27 20:59:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-01-27 20:59:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 5782 transitions. [2023-01-27 20:59:59,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44572926302806043 [2023-01-27 20:59:59,981 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 5782 transitions. [2023-01-27 20:59:59,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 5782 transitions. [2023-01-27 20:59:59,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:59,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 5782 transitions. [2023-01-27 20:59:59,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 83.79710144927536) internal successors, (5782), 69 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:59,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 188.0) internal successors, (13160), 70 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:59,998 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 188.0) internal successors, (13160), 70 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:59,998 INFO L175 Difference]: Start difference. First operand has 328 places, 1269 transitions, 24924 flow. Second operand 69 states and 5782 transitions. [2023-01-27 20:59:59,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 2276 transitions, 47921 flow [2023-01-27 21:00:05,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 2276 transitions, 44160 flow, removed 1601 selfloop flow, removed 42 redundant places. [2023-01-27 21:00:05,257 INFO L231 Difference]: Finished difference. Result has 360 places, 1625 transitions, 33729 flow [2023-01-27 21:00:05,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=22733, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=33729, PETRI_PLACES=360, PETRI_TRANSITIONS=1625} [2023-01-27 21:00:05,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2023-01-27 21:00:05,258 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 1625 transitions, 33729 flow [2023-01-27 21:00:05,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.66666666666667) internal successors, (1912), 24 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:05,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:00:05,259 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:00:05,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 21:00:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-27 21:00:05,459 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:00:05,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:00:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash -374995805, now seen corresponding path program 7 times [2023-01-27 21:00:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:00:05,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301694037] [2023-01-27 21:00:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:00:05,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:00:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:00:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:05,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:00:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301694037] [2023-01-27 21:00:05,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301694037] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:00:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893911101] [2023-01-27 21:00:05,805 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 21:00:05,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:00:05,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:00:05,809 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:00:05,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 21:00:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:00:05,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 21:00:05,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:00:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:06,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:00:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:07,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893911101] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:00:07,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:00:07,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-27 21:00:07,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972934068] [2023-01-27 21:00:07,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:00:07,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 21:00:07,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:00:07,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 21:00:07,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-01-27 21:00:07,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:00:07,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1625 transitions, 33729 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:07,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:00:07,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:00:07,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:00:18,629 INFO L130 PetriNetUnfolder]: 14013/23490 cut-off events. [2023-01-27 21:00:18,630 INFO L131 PetriNetUnfolder]: For 643816/643816 co-relation queries the response was YES. [2023-01-27 21:00:18,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206159 conditions, 23490 events. 14013/23490 cut-off events. For 643816/643816 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 176356 event pairs, 261 based on Foata normal form. 330/23820 useless extension candidates. Maximal degree in co-relation 205957. Up to 8321 conditions per place. [2023-01-27 21:00:18,843 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 1269 selfloop transitions, 934 changer transitions 710/2913 dead transitions. [2023-01-27 21:00:18,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 2913 transitions, 65681 flow [2023-01-27 21:00:18,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-01-27 21:00:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-01-27 21:00:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5231 transitions. [2023-01-27 21:00:18,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46374113475177303 [2023-01-27 21:00:18,847 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5231 transitions. [2023-01-27 21:00:18,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5231 transitions. [2023-01-27 21:00:18,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:00:18,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5231 transitions. [2023-01-27 21:00:18,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 87.18333333333334) internal successors, (5231), 60 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:18,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 188.0) internal successors, (11468), 61 states have internal predecessors, (11468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:18,857 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 188.0) internal successors, (11468), 61 states have internal predecessors, (11468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:18,857 INFO L175 Difference]: Start difference. First operand has 360 places, 1625 transitions, 33729 flow. Second operand 60 states and 5231 transitions. [2023-01-27 21:00:18,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 2913 transitions, 65681 flow [2023-01-27 21:00:30,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 2913 transitions, 61933 flow, removed 1763 selfloop flow, removed 41 redundant places. [2023-01-27 21:00:30,403 INFO L231 Difference]: Finished difference. Result has 377 places, 1913 transitions, 41810 flow [2023-01-27 21:00:30,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=32363, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=701, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=839, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=41810, PETRI_PLACES=377, PETRI_TRANSITIONS=1913} [2023-01-27 21:00:30,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-01-27 21:00:30,404 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1913 transitions, 41810 flow [2023-01-27 21:00:30,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:30,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:00:30,405 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:00:30,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 21:00:30,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:00:30,610 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:00:30,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:00:30,610 INFO L85 PathProgramCache]: Analyzing trace with hash -861836191, now seen corresponding path program 8 times [2023-01-27 21:00:30,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:00:30,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096143292] [2023-01-27 21:00:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:00:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:00:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:00:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:00:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096143292] [2023-01-27 21:00:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096143292] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:00:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966450114] [2023-01-27 21:00:30,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:00:30,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:00:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:00:30,945 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:00:30,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 21:00:31,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:00:31,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:00:31,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 21:00:31,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:00:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:31,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:00:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:32,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966450114] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:00:32,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:00:32,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-27 21:00:32,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045098388] [2023-01-27 21:00:32,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:00:32,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 21:00:32,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:00:32,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 21:00:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2023-01-27 21:00:32,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:00:32,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1913 transitions, 41810 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:32,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:00:32,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:00:32,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:00:44,813 INFO L130 PetriNetUnfolder]: 14865/24854 cut-off events. [2023-01-27 21:00:44,813 INFO L131 PetriNetUnfolder]: For 613998/613998 co-relation queries the response was YES. [2023-01-27 21:00:44,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219028 conditions, 24854 events. 14865/24854 cut-off events. For 613998/613998 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 186361 event pairs, 329 based on Foata normal form. 338/25192 useless extension candidates. Maximal degree in co-relation 218802. Up to 8783 conditions per place. [2023-01-27 21:00:45,073 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 1380 selfloop transitions, 1113 changer transitions 421/2914 dead transitions. [2023-01-27 21:00:45,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 2914 transitions, 67362 flow [2023-01-27 21:00:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-27 21:00:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-27 21:00:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5884 transitions. [2023-01-27 21:00:45,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602628285356696 [2023-01-27 21:00:45,077 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5884 transitions. [2023-01-27 21:00:45,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5884 transitions. [2023-01-27 21:00:45,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:00:45,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5884 transitions. [2023-01-27 21:00:45,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 86.52941176470588) internal successors, (5884), 68 states have internal predecessors, (5884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:45,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:45,089 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:45,089 INFO L175 Difference]: Start difference. First operand has 377 places, 1913 transitions, 41810 flow. Second operand 68 states and 5884 transitions. [2023-01-27 21:00:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 2914 transitions, 67362 flow [2023-01-27 21:00:55,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 2914 transitions, 64489 flow, removed 1315 selfloop flow, removed 37 redundant places. [2023-01-27 21:00:55,201 INFO L231 Difference]: Finished difference. Result has 419 places, 2121 transitions, 49097 flow [2023-01-27 21:00:55,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=40006, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=842, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=49097, PETRI_PLACES=419, PETRI_TRANSITIONS=2121} [2023-01-27 21:00:55,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2023-01-27 21:00:55,203 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 2121 transitions, 49097 flow [2023-01-27 21:00:55,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:55,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:00:55,203 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:00:55,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-27 21:00:55,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:00:55,409 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:00:55,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:00:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1679700261, now seen corresponding path program 9 times [2023-01-27 21:00:55,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:00:55,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061453615] [2023-01-27 21:00:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:00:55,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:00:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:00:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:55,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:00:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061453615] [2023-01-27 21:00:55,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061453615] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:00:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968985042] [2023-01-27 21:00:55,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:00:55,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:00:55,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:00:55,816 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:00:55,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 21:00:55,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 21:00:55,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:00:55,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 21:00:55,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:00:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:56,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:00:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:00:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968985042] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:00:57,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:00:57,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-01-27 21:00:57,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125603851] [2023-01-27 21:00:57,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:00:57,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 21:00:57,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:00:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 21:00:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-01-27 21:00:57,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:00:57,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 2121 transitions, 49097 flow. Second operand has 23 states, 23 states have (on average 81.56521739130434) internal successors, (1876), 23 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:00:57,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:00:57,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:00:57,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:01:12,925 INFO L130 PetriNetUnfolder]: 17241/28954 cut-off events. [2023-01-27 21:01:12,926 INFO L131 PetriNetUnfolder]: For 673318/673318 co-relation queries the response was YES. [2023-01-27 21:01:13,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260573 conditions, 28954 events. 17241/28954 cut-off events. For 673318/673318 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 224657 event pairs, 411 based on Foata normal form. 266/29220 useless extension candidates. Maximal degree in co-relation 260458. Up to 11728 conditions per place. [2023-01-27 21:01:13,486 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 1704 selfloop transitions, 1078 changer transitions 680/3462 dead transitions. [2023-01-27 21:01:13,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 3462 transitions, 84050 flow [2023-01-27 21:01:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-27 21:01:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-27 21:01:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5932 transitions. [2023-01-27 21:01:13,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464017521902378 [2023-01-27 21:01:13,490 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5932 transitions. [2023-01-27 21:01:13,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5932 transitions. [2023-01-27 21:01:13,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:01:13,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5932 transitions. [2023-01-27 21:01:13,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 87.23529411764706) internal successors, (5932), 68 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:13,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:13,503 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:13,503 INFO L175 Difference]: Start difference. First operand has 419 places, 2121 transitions, 49097 flow. Second operand 68 states and 5932 transitions. [2023-01-27 21:01:13,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 3462 transitions, 84050 flow [2023-01-27 21:01:32,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 3462 transitions, 80779 flow, removed 1532 selfloop flow, removed 30 redundant places. [2023-01-27 21:01:32,411 INFO L231 Difference]: Finished difference. Result has 450 places, 2432 transitions, 58341 flow [2023-01-27 21:01:32,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=47484, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=784, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=58341, PETRI_PLACES=450, PETRI_TRANSITIONS=2432} [2023-01-27 21:01:32,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2023-01-27 21:01:32,413 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 2432 transitions, 58341 flow [2023-01-27 21:01:32,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.56521739130434) internal successors, (1876), 23 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:32,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:01:32,414 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:01:32,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 21:01:32,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-01-27 21:01:32,615 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:01:32,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:01:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash 641642743, now seen corresponding path program 10 times [2023-01-27 21:01:32,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:01:32,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877525757] [2023-01-27 21:01:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:01:32,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:01:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:01:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:01:32,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:01:32,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877525757] [2023-01-27 21:01:32,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877525757] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:01:32,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230554548] [2023-01-27 21:01:32,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 21:01:32,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:01:32,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:01:32,880 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:01:32,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 21:01:32,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 21:01:32,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:01:32,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 21:01:32,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:01:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:01:33,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:01:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:01:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230554548] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:01:34,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:01:34,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-27 21:01:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136133535] [2023-01-27 21:01:34,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:01:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 21:01:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:01:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 21:01:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-01-27 21:01:34,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:01:34,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 2432 transitions, 58341 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:34,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:01:34,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:01:34,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:01:53,614 INFO L130 PetriNetUnfolder]: 20120/33819 cut-off events. [2023-01-27 21:01:53,614 INFO L131 PetriNetUnfolder]: For 1044291/1044291 co-relation queries the response was YES. [2023-01-27 21:01:53,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313464 conditions, 33819 events. 20120/33819 cut-off events. For 1044291/1044291 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 268174 event pairs, 333 based on Foata normal form. 468/34287 useless extension candidates. Maximal degree in co-relation 313343. Up to 12069 conditions per place. [2023-01-27 21:01:54,091 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 1577 selfloop transitions, 1496 changer transitions 950/4023 dead transitions. [2023-01-27 21:01:54,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 4023 transitions, 101035 flow [2023-01-27 21:01:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-01-27 21:01:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-01-27 21:01:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 6362 transitions. [2023-01-27 21:01:54,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46356747303993007 [2023-01-27 21:01:54,095 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 6362 transitions. [2023-01-27 21:01:54,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 6362 transitions. [2023-01-27 21:01:54,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:01:54,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 6362 transitions. [2023-01-27 21:01:54,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 87.15068493150685) internal successors, (6362), 73 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:54,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 188.0) internal successors, (13912), 74 states have internal predecessors, (13912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:54,107 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 188.0) internal successors, (13912), 74 states have internal predecessors, (13912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:54,107 INFO L175 Difference]: Start difference. First operand has 450 places, 2432 transitions, 58341 flow. Second operand 73 states and 6362 transitions. [2023-01-27 21:01:54,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 4023 transitions, 101035 flow [2023-01-27 21:02:12,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 4023 transitions, 98093 flow, removed 1400 selfloop flow, removed 30 redundant places. [2023-01-27 21:02:12,819 INFO L231 Difference]: Finished difference. Result has 498 places, 2703 transitions, 68955 flow [2023-01-27 21:02:12,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=56700, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=68955, PETRI_PLACES=498, PETRI_TRANSITIONS=2703} [2023-01-27 21:02:12,821 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 468 predicate places. [2023-01-27 21:02:12,821 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 2703 transitions, 68955 flow [2023-01-27 21:02:12,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:02:12,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:02:12,821 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:02:12,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 21:02:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-27 21:02:13,025 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:02:13,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:02:13,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1196493169, now seen corresponding path program 11 times [2023-01-27 21:02:13,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:02:13,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343817667] [2023-01-27 21:02:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:02:13,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:02:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:02:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:02:13,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:02:13,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343817667] [2023-01-27 21:02:13,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343817667] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:02:13,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353991893] [2023-01-27 21:02:13,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 21:02:13,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:02:13,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:02:13,268 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:02:13,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 21:02:13,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-01-27 21:02:13,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:02:13,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 21:02:13,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:02:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:02:13,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:02:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:02:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353991893] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:02:14,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:02:14,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-27 21:02:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775826477] [2023-01-27 21:02:14,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:02:14,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 21:02:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:02:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 21:02:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2023-01-27 21:02:14,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:02:14,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 2703 transitions, 68955 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:02:14,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:02:14,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:02:14,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:02:35,830 INFO L130 PetriNetUnfolder]: 20212/33745 cut-off events. [2023-01-27 21:02:35,831 INFO L131 PetriNetUnfolder]: For 1132339/1132339 co-relation queries the response was YES. [2023-01-27 21:02:36,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323479 conditions, 33745 events. 20212/33745 cut-off events. For 1132339/1132339 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 265346 event pairs, 455 based on Foata normal form. 330/34075 useless extension candidates. Maximal degree in co-relation 323343. Up to 16085 conditions per place. [2023-01-27 21:02:36,443 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 2159 selfloop transitions, 1010 changer transitions 686/3855 dead transitions. [2023-01-27 21:02:36,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 3855 transitions, 100857 flow [2023-01-27 21:02:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-01-27 21:02:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-01-27 21:02:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 6280 transitions. [2023-01-27 21:02:36,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639479905437352 [2023-01-27 21:02:36,447 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 6280 transitions. [2023-01-27 21:02:36,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 6280 transitions. [2023-01-27 21:02:36,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:02:36,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 6280 transitions. [2023-01-27 21:02:36,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 87.22222222222223) internal successors, (6280), 72 states have internal predecessors, (6280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:02:36,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 188.0) internal successors, (13724), 73 states have internal predecessors, (13724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:02:36,458 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 188.0) internal successors, (13724), 73 states have internal predecessors, (13724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:02:36,458 INFO L175 Difference]: Start difference. First operand has 498 places, 2703 transitions, 68955 flow. Second operand 72 states and 6280 transitions. [2023-01-27 21:02:36,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 3855 transitions, 100857 flow [2023-01-27 21:02:54,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 3855 transitions, 97475 flow, removed 1501 selfloop flow, removed 40 redundant places. [2023-01-27 21:02:54,370 INFO L231 Difference]: Finished difference. Result has 527 places, 2825 transitions, 73128 flow [2023-01-27 21:02:54,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=66129, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=808, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1850, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=73128, PETRI_PLACES=527, PETRI_TRANSITIONS=2825} [2023-01-27 21:02:54,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 497 predicate places. [2023-01-27 21:02:54,373 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 2825 transitions, 73128 flow [2023-01-27 21:02:54,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:02:54,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:02:54,373 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:02:54,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-27 21:02:54,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:02:54,578 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:02:54,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:02:54,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1538225957, now seen corresponding path program 12 times [2023-01-27 21:02:54,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:02:54,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734622430] [2023-01-27 21:02:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:02:54,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:02:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:02:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:02:54,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:02:54,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734622430] [2023-01-27 21:02:54,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734622430] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:02:54,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715618735] [2023-01-27 21:02:54,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 21:02:54,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:02:54,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:02:54,924 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:02:54,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 21:02:55,031 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-01-27 21:02:55,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:02:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 21:02:55,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:02:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:02:55,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:02:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:02:56,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715618735] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:02:56,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:02:56,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-27 21:02:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921049882] [2023-01-27 21:02:56,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:02:56,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 21:02:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:02:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 21:02:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-01-27 21:02:56,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:02:56,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 2825 transitions, 73128 flow. Second operand has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:02:56,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:02:56,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:02:56,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:03:19,254 INFO L130 PetriNetUnfolder]: 21650/36243 cut-off events. [2023-01-27 21:03:19,255 INFO L131 PetriNetUnfolder]: For 1291197/1291197 co-relation queries the response was YES. [2023-01-27 21:03:19,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354695 conditions, 36243 events. 21650/36243 cut-off events. For 1291197/1291197 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 288285 event pairs, 445 based on Foata normal form. 314/36557 useless extension candidates. Maximal degree in co-relation 354555. Up to 15394 conditions per place. [2023-01-27 21:03:19,705 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 2029 selfloop transitions, 1377 changer transitions 651/4057 dead transitions. [2023-01-27 21:03:19,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 4057 transitions, 110194 flow [2023-01-27 21:03:19,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-27 21:03:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-27 21:03:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5929 transitions. [2023-01-27 21:03:19,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637828535669587 [2023-01-27 21:03:19,708 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5929 transitions. [2023-01-27 21:03:19,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5929 transitions. [2023-01-27 21:03:19,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:03:19,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5929 transitions. [2023-01-27 21:03:19,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 87.19117647058823) internal successors, (5929), 68 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:03:19,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:03:19,717 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 188.0) internal successors, (12972), 69 states have internal predecessors, (12972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:03:19,717 INFO L175 Difference]: Start difference. First operand has 527 places, 2825 transitions, 73128 flow. Second operand 68 states and 5929 transitions. [2023-01-27 21:03:19,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 4057 transitions, 110194 flow [2023-01-27 21:03:43,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 4057 transitions, 103661 flow, removed 2252 selfloop flow, removed 43 redundant places. [2023-01-27 21:03:43,956 INFO L231 Difference]: Finished difference. Result has 535 places, 3015 transitions, 79732 flow [2023-01-27 21:03:43,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=69253, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=79732, PETRI_PLACES=535, PETRI_TRANSITIONS=3015} [2023-01-27 21:03:43,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 505 predicate places. [2023-01-27 21:03:43,959 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 3015 transitions, 79732 flow [2023-01-27 21:03:43,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:03:43,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:03:43,959 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:03:43,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-27 21:03:44,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:03:44,165 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:03:44,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:03:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash 947299016, now seen corresponding path program 13 times [2023-01-27 21:03:44,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:03:44,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750480399] [2023-01-27 21:03:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:03:44,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:03:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:03:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:03:44,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:03:44,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750480399] [2023-01-27 21:03:44,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750480399] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:03:44,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771703804] [2023-01-27 21:03:44,515 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 21:03:44,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:03:44,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:03:44,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:03:44,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 21:03:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:03:44,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 21:03:44,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:03:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:03:44,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:03:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:03:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771703804] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:03:46,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:03:46,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-01-27 21:03:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514382048] [2023-01-27 21:03:46,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:03:46,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 21:03:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:03:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 21:03:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-01-27 21:03:46,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:03:46,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 3015 transitions, 79732 flow. Second operand has 27 states, 27 states have (on average 81.74074074074075) internal successors, (2207), 27 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:03:46,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:03:46,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:03:46,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:04:11,964 INFO L130 PetriNetUnfolder]: 22987/38300 cut-off events. [2023-01-27 21:04:11,964 INFO L131 PetriNetUnfolder]: For 1189470/1189470 co-relation queries the response was YES. [2023-01-27 21:04:12,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375585 conditions, 38300 events. 22987/38300 cut-off events. For 1189470/1189470 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 305084 event pairs, 519 based on Foata normal form. 424/38724 useless extension candidates. Maximal degree in co-relation 375456. Up to 18394 conditions per place. [2023-01-27 21:04:12,632 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 2458 selfloop transitions, 1141 changer transitions 556/4155 dead transitions. [2023-01-27 21:04:12,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 4155 transitions, 116301 flow [2023-01-27 21:04:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-01-27 21:04:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-01-27 21:04:12,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 6461 transitions. [2023-01-27 21:04:12,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582269503546099 [2023-01-27 21:04:12,636 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 6461 transitions. [2023-01-27 21:04:12,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 6461 transitions. [2023-01-27 21:04:12,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:04:12,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 6461 transitions. [2023-01-27 21:04:12,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 86.14666666666666) internal successors, (6461), 75 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:04:12,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 188.0) internal successors, (14288), 76 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:04:12,648 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 188.0) internal successors, (14288), 76 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:04:12,648 INFO L175 Difference]: Start difference. First operand has 535 places, 3015 transitions, 79732 flow. Second operand 75 states and 6461 transitions. [2023-01-27 21:04:12,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 4155 transitions, 116301 flow [2023-01-27 21:04:34,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 4155 transitions, 112449 flow, removed 1824 selfloop flow, removed 33 redundant places. [2023-01-27 21:04:34,191 INFO L231 Difference]: Finished difference. Result has 587 places, 3232 transitions, 87791 flow [2023-01-27 21:04:34,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=76942, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=903, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2012, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=87791, PETRI_PLACES=587, PETRI_TRANSITIONS=3232} [2023-01-27 21:04:34,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 557 predicate places. [2023-01-27 21:04:34,194 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 3232 transitions, 87791 flow [2023-01-27 21:04:34,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 81.74074074074075) internal successors, (2207), 27 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:04:34,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:04:34,194 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:04:34,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-27 21:04:34,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-27 21:04:34,397 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:04:34,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:04:34,397 INFO L85 PathProgramCache]: Analyzing trace with hash 954649586, now seen corresponding path program 14 times [2023-01-27 21:04:34,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:04:34,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698191835] [2023-01-27 21:04:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:04:34,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:04:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:04:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:04:34,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:04:34,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698191835] [2023-01-27 21:04:34,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698191835] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:04:34,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210881552] [2023-01-27 21:04:34,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:04:34,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:04:34,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:04:34,973 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:04:34,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 21:04:35,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:04:35,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:04:35,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 21:04:35,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:04:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:04:35,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:04:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:04:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210881552] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:04:37,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:04:37,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-01-27 21:04:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993748940] [2023-01-27 21:04:37,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:04:37,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:04:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:04:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:04:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2023-01-27 21:04:37,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:04:37,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 3232 transitions, 87791 flow. Second operand has 30 states, 30 states have (on average 81.66666666666667) internal successors, (2450), 30 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:04:37,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:04:37,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:04:37,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:05:11,399 INFO L130 PetriNetUnfolder]: 25163/42134 cut-off events. [2023-01-27 21:05:11,399 INFO L131 PetriNetUnfolder]: For 1377380/1377380 co-relation queries the response was YES. [2023-01-27 21:05:12,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420804 conditions, 42134 events. 25163/42134 cut-off events. For 1377380/1377380 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 340516 event pairs, 691 based on Foata normal form. 332/42466 useless extension candidates. Maximal degree in co-relation 420655. Up to 18652 conditions per place. [2023-01-27 21:05:12,547 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 2593 selfloop transitions, 1584 changer transitions 364/4541 dead transitions. [2023-01-27 21:05:12,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 4541 transitions, 128508 flow [2023-01-27 21:05:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-01-27 21:05:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-01-27 21:05:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 6609 transitions. [2023-01-27 21:05:12,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46255599104143336 [2023-01-27 21:05:12,554 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 6609 transitions. [2023-01-27 21:05:12,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 6609 transitions. [2023-01-27 21:05:12,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:05:12,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 6609 transitions. [2023-01-27 21:05:12,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 86.96052631578948) internal successors, (6609), 76 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:12,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 188.0) internal successors, (14476), 77 states have internal predecessors, (14476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:12,567 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 188.0) internal successors, (14476), 77 states have internal predecessors, (14476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:12,567 INFO L175 Difference]: Start difference. First operand has 587 places, 3232 transitions, 87791 flow. Second operand 76 states and 6609 transitions. [2023-01-27 21:05:12,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 4541 transitions, 128508 flow [2023-01-27 21:05:56,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 4541 transitions, 124176 flow, removed 1941 selfloop flow, removed 43 redundant places. [2023-01-27 21:05:56,446 INFO L231 Difference]: Finished difference. Result has 609 places, 3691 transitions, 104190 flow [2023-01-27 21:05:56,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=84942, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2072, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=104190, PETRI_PLACES=609, PETRI_TRANSITIONS=3691} [2023-01-27 21:05:56,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 579 predicate places. [2023-01-27 21:05:56,449 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 3691 transitions, 104190 flow [2023-01-27 21:05:56,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 81.66666666666667) internal successors, (2450), 30 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:56,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:05:56,449 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:05:56,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-27 21:05:56,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-27 21:05:56,654 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:05:56,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:05:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash -593558814, now seen corresponding path program 15 times [2023-01-27 21:05:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:05:56,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193391496] [2023-01-27 21:05:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:05:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:05:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:05:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:05:57,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:05:57,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193391496] [2023-01-27 21:05:57,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193391496] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:05:57,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885764364] [2023-01-27 21:05:57,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:05:57,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:05:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:05:57,154 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:05:57,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 21:05:57,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-27 21:05:57,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:05:57,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 21:05:57,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:05:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:05:57,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:05:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:05:59,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885764364] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:05:59,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:05:59,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-01-27 21:05:59,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786770706] [2023-01-27 21:05:59,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:05:59,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:05:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:05:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:05:59,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2023-01-27 21:05:59,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 188 [2023-01-27 21:05:59,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 3691 transitions, 104190 flow. Second operand has 30 states, 30 states have (on average 79.53333333333333) internal successors, (2386), 30 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:59,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:05:59,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 188 [2023-01-27 21:05:59,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:06:46,290 INFO L130 PetriNetUnfolder]: 28725/48072 cut-off events. [2023-01-27 21:06:46,290 INFO L131 PetriNetUnfolder]: For 1618270/1618270 co-relation queries the response was YES. [2023-01-27 21:06:47,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492885 conditions, 48072 events. 28725/48072 cut-off events. For 1618270/1618270 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 394065 event pairs, 673 based on Foata normal form. 420/48492 useless extension candidates. Maximal degree in co-relation 492735. Up to 17577 conditions per place. [2023-01-27 21:06:47,476 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 2580 selfloop transitions, 2252 changer transitions 518/5350 dead transitions. [2023-01-27 21:06:47,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 5350 transitions, 158597 flow [2023-01-27 21:06:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-01-27 21:06:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-01-27 21:06:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 10050 transitions. [2023-01-27 21:06:47,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4454787234042553 [2023-01-27 21:06:47,481 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 10050 transitions. [2023-01-27 21:06:47,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 10050 transitions. [2023-01-27 21:06:47,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:06:47,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 10050 transitions. [2023-01-27 21:06:47,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 83.75) internal successors, (10050), 120 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:47,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 188.0) internal successors, (22748), 121 states have internal predecessors, (22748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:47,500 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 188.0) internal successors, (22748), 121 states have internal predecessors, (22748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:47,500 INFO L175 Difference]: Start difference. First operand has 609 places, 3691 transitions, 104190 flow. Second operand 120 states and 10050 transitions. [2023-01-27 21:06:47,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 5350 transitions, 158597 flow [2023-01-27 21:07:34,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 5350 transitions, 151455 flow, removed 3347 selfloop flow, removed 36 redundant places. [2023-01-27 21:07:34,328 INFO L231 Difference]: Finished difference. Result has 746 places, 4291 transitions, 127623 flow [2023-01-27 21:07:34,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=99648, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1672, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=127623, PETRI_PLACES=746, PETRI_TRANSITIONS=4291} [2023-01-27 21:07:34,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 716 predicate places. [2023-01-27 21:07:34,331 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 4291 transitions, 127623 flow [2023-01-27 21:07:34,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 79.53333333333333) internal successors, (2386), 30 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:07:34,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:07:34,331 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:07:34,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-27 21:07:34,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-27 21:07:34,532 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:07:34,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:07:34,532 INFO L85 PathProgramCache]: Analyzing trace with hash 337057471, now seen corresponding path program 16 times [2023-01-27 21:07:34,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:07:34,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382566831] [2023-01-27 21:07:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:07:34,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:07:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:07:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:07:35,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:07:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382566831] [2023-01-27 21:07:35,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382566831] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:07:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205710165] [2023-01-27 21:07:35,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 21:07:35,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:07:35,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:07:35,118 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:07:35,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 21:07:35,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 21:07:35,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:07:35,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 21:07:35,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:07:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:07:35,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:07:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:07:37,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205710165] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:07:37,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:07:37,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-01-27 21:07:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079957913] [2023-01-27 21:07:37,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:07:37,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 21:07:37,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:07:37,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 21:07:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2023-01-27 21:07:37,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:07:37,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 4291 transitions, 127623 flow. Second operand has 31 states, 31 states have (on average 81.58064516129032) internal successors, (2529), 31 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:07:37,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:07:37,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:07:37,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:08:44,505 INFO L130 PetriNetUnfolder]: 34899/58762 cut-off events. [2023-01-27 21:08:44,505 INFO L131 PetriNetUnfolder]: For 3515107/3515107 co-relation queries the response was YES. [2023-01-27 21:08:46,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682992 conditions, 58762 events. 34899/58762 cut-off events. For 3515107/3515107 co-relation queries the response was YES. Maximal size of possible extension queue 2097. Compared 499838 event pairs, 771 based on Foata normal form. 436/59198 useless extension candidates. Maximal degree in co-relation 682784. Up to 20835 conditions per place. [2023-01-27 21:08:46,591 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 3289 selfloop transitions, 2435 changer transitions 1134/6858 dead transitions. [2023-01-27 21:08:46,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 6858 transitions, 214465 flow [2023-01-27 21:08:46,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-01-27 21:08:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-01-27 21:08:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 10902 transitions. [2023-01-27 21:08:46,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46391489361702126 [2023-01-27 21:08:46,596 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 10902 transitions. [2023-01-27 21:08:46,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 10902 transitions. [2023-01-27 21:08:46,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:08:46,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 10902 transitions. [2023-01-27 21:08:46,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 87.216) internal successors, (10902), 125 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:08:46,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 188.0) internal successors, (23688), 126 states have internal predecessors, (23688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:08:46,616 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 188.0) internal successors, (23688), 126 states have internal predecessors, (23688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:08:46,616 INFO L175 Difference]: Start difference. First operand has 746 places, 4291 transitions, 127623 flow. Second operand 125 states and 10902 transitions. [2023-01-27 21:08:46,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 6858 transitions, 214465 flow [2023-01-27 21:10:30,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 6858 transitions, 202458 flow, removed 5668 selfloop flow, removed 82 redundant places. [2023-01-27 21:10:30,321 INFO L231 Difference]: Finished difference. Result has 774 places, 5046 transitions, 157473 flow [2023-01-27 21:10:30,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=122945, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1703, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=125, PETRI_FLOW=157473, PETRI_PLACES=774, PETRI_TRANSITIONS=5046} [2023-01-27 21:10:30,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 744 predicate places. [2023-01-27 21:10:30,324 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 5046 transitions, 157473 flow [2023-01-27 21:10:30,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 81.58064516129032) internal successors, (2529), 31 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:30,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:30,324 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:30,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 21:10:30,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:10:30,529 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:10:30,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash 624498002, now seen corresponding path program 17 times [2023-01-27 21:10:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635020362] [2023-01-27 21:10:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:31,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:31,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635020362] [2023-01-27 21:10:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635020362] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:10:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697771639] [2023-01-27 21:10:31,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 21:10:31,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:10:31,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:10:31,011 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:10:31,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-27 21:10:31,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-01-27 21:10:31,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:10:31,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 21:10:31,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:10:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:31,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:10:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:32,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697771639] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:10:32,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:10:32,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-01-27 21:10:32,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418748335] [2023-01-27 21:10:32,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:10:32,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 21:10:32,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 21:10:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2023-01-27 21:10:32,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-01-27 21:10:32,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 5046 transitions, 157473 flow. Second operand has 31 states, 31 states have (on average 81.61290322580645) internal successors, (2530), 31 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:32,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:32,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-01-27 21:10:32,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:11:50,845 INFO L130 PetriNetUnfolder]: 38272/64531 cut-off events. [2023-01-27 21:11:50,845 INFO L131 PetriNetUnfolder]: For 3613766/3613766 co-relation queries the response was YES. [2023-01-27 21:11:52,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724395 conditions, 64531 events. 38272/64531 cut-off events. For 3613766/3613766 co-relation queries the response was YES. Maximal size of possible extension queue 2146. Compared 554636 event pairs, 841 based on Foata normal form. 650/65181 useless extension candidates. Maximal degree in co-relation 724202. Up to 25848 conditions per place. [2023-01-27 21:11:53,299 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 3416 selfloop transitions, 2350 changer transitions 1399/7165 dead transitions. [2023-01-27 21:11:53,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 7165 transitions, 231482 flow [2023-01-27 21:11:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-01-27 21:11:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2023-01-27 21:11:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 8176 transitions. [2023-01-27 21:11:53,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626527840651879 [2023-01-27 21:11:53,303 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 8176 transitions. [2023-01-27 21:11:53,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 8176 transitions. [2023-01-27 21:11:53,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:11:53,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 8176 transitions. [2023-01-27 21:11:53,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 86.97872340425532) internal successors, (8176), 94 states have internal predecessors, (8176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:53,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 188.0) internal successors, (17860), 95 states have internal predecessors, (17860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:53,316 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 188.0) internal successors, (17860), 95 states have internal predecessors, (17860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:53,316 INFO L175 Difference]: Start difference. First operand has 774 places, 5046 transitions, 157473 flow. Second operand 94 states and 8176 transitions. [2023-01-27 21:11:53,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 7165 transitions, 231482 flow Received shutdown request... [2023-01-27 21:12:27,450 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:12:27,450 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:12:27,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 21:12:27,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-27 21:12:27,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-27 21:12:27,690 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-27 21:12:27,691 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 21:12:27,691 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 21:12:27,691 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 21:12:27,691 INFO L445 BasicCegarLoop]: Path program histogram: [17, 6, 5, 1] [2023-01-27 21:12:27,693 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:12:27,693 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:12:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:12:27 BasicIcfg [2023-01-27 21:12:27,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:12:27,695 INFO L158 Benchmark]: Toolchain (without parser) took 811656.42ms. Allocated memory was 341.8MB in the beginning and 6.6GB in the end (delta: 6.2GB). Free memory was 310.5MB in the beginning and 3.3GB in the end (delta: -3.0GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2023-01-27 21:12:27,695 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory was 214.7MB in the beginning and 214.5MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:12:27,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.10ms. Allocated memory is still 341.8MB. Free memory was 310.5MB in the beginning and 298.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 21:12:27,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.64ms. Allocated memory is still 341.8MB. Free memory was 298.9MB in the beginning and 297.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:12:27,696 INFO L158 Benchmark]: Boogie Preprocessor took 28.97ms. Allocated memory is still 341.8MB. Free memory was 297.0MB in the beginning and 295.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:12:27,696 INFO L158 Benchmark]: RCFGBuilder took 368.01ms. Allocated memory is still 341.8MB. Free memory was 295.8MB in the beginning and 275.7MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 21:12:27,696 INFO L158 Benchmark]: TraceAbstraction took 810984.10ms. Allocated memory was 341.8MB in the beginning and 6.6GB in the end (delta: 6.2GB). Free memory was 275.3MB in the beginning and 3.3GB in the end (delta: -3.1GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2023-01-27 21:12:27,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory was 214.7MB in the beginning and 214.5MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 228.10ms. Allocated memory is still 341.8MB. Free memory was 310.5MB in the beginning and 298.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.64ms. Allocated memory is still 341.8MB. Free memory was 298.9MB in the beginning and 297.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.97ms. Allocated memory is still 341.8MB. Free memory was 297.0MB in the beginning and 295.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 368.01ms. Allocated memory is still 341.8MB. Free memory was 295.8MB in the beginning and 275.7MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 810984.10ms. Allocated memory was 341.8MB in the beginning and 6.6GB in the end (delta: 6.2GB). Free memory was 275.3MB in the beginning and 3.3GB in the end (delta: -3.1GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 99 PlacesBefore, 30 PlacesAfterwards, 96 TransitionsBefore, 22 TransitionsAfterwards, 1370 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 79 TotalNumberOfCompositions, 1979 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1535, independent: 1491, independent conditional: 0, independent unconditional: 1491, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 738, independent: 723, independent conditional: 0, independent unconditional: 723, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1535, independent: 768, independent conditional: 0, independent unconditional: 768, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 738, unknown conditional: 0, unknown unconditional: 738] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 134 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: 810.9s, OverallIterations: 29, TraceHistogramMax: 6, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 768.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13787 SdHoareTripleChecker+Valid, 16.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13787 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 13.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 835 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32862 IncrementalHoareTripleChecker+Invalid, 33697 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 835 mSolverCounterUnsat, 20 mSDtfsCounter, 32862 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2551 GetRequests, 803 SyntacticMatches, 22 SemanticMatches, 1726 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57074 ImplicationChecksByTransitivity, 53.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157473occurred in iteration=28, InterpolantAutomatonStates: 1355, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 33.2s InterpolantComputationTime, 1274 NumberOfCodeBlocks, 1274 NumberOfCodeBlocksAsserted, 94 NumberOfCheckSat, 1757 ConstructedInterpolants, 0 QuantifiedInterpolants, 33535 SizeOfPredicates, 526 NumberOfNonLiveVariables, 3384 ConjunctsInSsa, 296 ConjunctsInUnsatCore, 69 InterpolantComputations, 9 PerfectInterpolantSequences, 204/970 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-01-27 21:12:27,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0