/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:50:20,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:50:20,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:50:20,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:50:20,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:50:20,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:50:20,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:50:20,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:50:20,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:50:20,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:50:20,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:50:20,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:50:20,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:50:20,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:50:20,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:50:20,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:50:20,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:50:20,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:50:20,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:50:20,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:50:20,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:50:20,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:50:20,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:50:20,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:50:20,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:50:20,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:50:20,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:50:20,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:50:20,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:50:20,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:50:20,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:50:20,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:50:20,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:50:20,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:50:20,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:50:20,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:50:20,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:50:20,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:50:20,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:50:20,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:50:20,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:50:20,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 03:50:20,900 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:50:20,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:50:20,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:50:20,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:50:20,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:50:20,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:50:20,902 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:50:20,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:50:20,902 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:50:20,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:50:20,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:50:20,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:50:20,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:50:20,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:50:20,905 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:50:21,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:50:21,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:50:21,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:50:21,086 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:50:21,087 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:50:21,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-01-28 03:50:22,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:50:22,180 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:50:22,180 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-01-28 03:50:22,185 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434d07561/fefdc723ed12454fb77cccc2d26d73dd/FLAGe92aaa02f [2023-01-28 03:50:22,196 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434d07561/fefdc723ed12454fb77cccc2d26d73dd [2023-01-28 03:50:22,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:50:22,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:50:22,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:50:22,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:50:22,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:50:22,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69acca9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22, skipping insertion in model container [2023-01-28 03:50:22,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:50:22,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:50:22,334 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/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2023-01-28 03:50:22,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:50:22,348 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:50:22,373 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/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2023-01-28 03:50:22,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:50:22,379 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:50:22,379 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:50:22,383 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:50:22,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22 WrapperNode [2023-01-28 03:50:22,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:50:22,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:50:22,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:50:22,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:50:22,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,403 INFO L138 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-01-28 03:50:22,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:50:22,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:50:22,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:50:22,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:50:22,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:50:22,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:50:22,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:50:22,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:50:22,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (1/1) ... [2023-01-28 03:50:22,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:50:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:50:22,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 03:50:22,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 03:50:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:50:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:50:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:50:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:50:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:50:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:50:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:50:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:50:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 03:50:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 03:50:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:50:22,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:50:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:50:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:50:22,475 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 03:50:22,543 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:50:22,545 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:50:22,719 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:50:22,751 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:50:22,752 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 03:50:22,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:50:22 BoogieIcfgContainer [2023-01-28 03:50:22,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:50:22,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:50:22,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:50:22,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:50:22,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:50:22" (1/3) ... [2023-01-28 03:50:22,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f2e06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:50:22, skipping insertion in model container [2023-01-28 03:50:22,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:50:22" (2/3) ... [2023-01-28 03:50:22,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f2e06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:50:22, skipping insertion in model container [2023-01-28 03:50:22,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:50:22" (3/3) ... [2023-01-28 03:50:22,761 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2023-01-28 03:50:22,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:50:22,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:50:22,773 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:50:22,806 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 03:50:22,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 182 flow [2023-01-28 03:50:22,858 INFO L130 PetriNetUnfolder]: 6/81 cut-off events. [2023-01-28 03:50:22,859 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:50:22,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 6/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-01-28 03:50:22,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 83 transitions, 182 flow [2023-01-28 03:50:22,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 73 transitions, 158 flow [2023-01-28 03:50:22,866 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:50:22,872 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 73 transitions, 158 flow [2023-01-28 03:50:22,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 73 transitions, 158 flow [2023-01-28 03:50:22,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 158 flow [2023-01-28 03:50:22,893 INFO L130 PetriNetUnfolder]: 6/73 cut-off events. [2023-01-28 03:50:22,893 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:50:22,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 6/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-01-28 03:50:22,894 INFO L119 LiptonReduction]: Number of co-enabled transitions 396 [2023-01-28 03:50:24,411 INFO L134 LiptonReduction]: Checked pairs total: 617 [2023-01-28 03:50:24,412 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-01-28 03:50:24,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:50:24,428 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;@199abb62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:50:24,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 03:50:24,432 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-01-28 03:50:24,433 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:50:24,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:24,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:24,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:50:24,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:24,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1488220568, now seen corresponding path program 1 times [2023-01-28 03:50:24,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:24,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244293760] [2023-01-28 03:50:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:24,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:24,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:24,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244293760] [2023-01-28 03:50:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244293760] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:50:24,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:50:24,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:50:24,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121996015] [2023-01-28 03:50:24,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:50:24,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:50:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:50:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:50:24,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-01-28 03:50:24,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:24,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:24,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-01-28 03:50:24,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:50:24,972 INFO L130 PetriNetUnfolder]: 88/157 cut-off events. [2023-01-28 03:50:24,972 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 03:50:24,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 157 events. 88/157 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 433 event pairs, 18 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 270. Up to 120 conditions per place. [2023-01-28 03:50:24,975 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 28 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-01-28 03:50:24,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 33 transitions, 153 flow [2023-01-28 03:50:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:50:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:50:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-01-28 03:50:24,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2023-01-28 03:50:24,993 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-01-28 03:50:24,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-01-28 03:50:24,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:50:24,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-01-28 03:50:25,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,003 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,004 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 4 states and 266 transitions. [2023-01-28 03:50:25,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 33 transitions, 153 flow [2023-01-28 03:50:25,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 33 transitions, 139 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 03:50:25,007 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 70 flow [2023-01-28 03:50:25,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-01-28 03:50:25,010 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-01-28 03:50:25,010 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 70 flow [2023-01-28 03:50:25,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:25,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:25,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:50:25,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:50:25,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash 772847751, now seen corresponding path program 1 times [2023-01-28 03:50:25,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:25,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152050462] [2023-01-28 03:50:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:25,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:25,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152050462] [2023-01-28 03:50:25,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152050462] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:50:25,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129699689] [2023-01-28 03:50:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:25,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:50:25,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:50:25,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:50:25,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 03:50:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:25,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 03:50:25,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:50:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:25,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:50:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:25,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129699689] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:50:25,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:50:25,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2023-01-28 03:50:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589958539] [2023-01-28 03:50:25,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:50:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:50:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:50:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:50:25,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 148 [2023-01-28 03:50:25,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 70 flow. Second operand has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:25,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 148 [2023-01-28 03:50:25,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:50:25,963 INFO L130 PetriNetUnfolder]: 111/200 cut-off events. [2023-01-28 03:50:25,964 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-01-28 03:50:25,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 200 events. 111/200 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 547 event pairs, 4 based on Foata normal form. 20/202 useless extension candidates. Maximal degree in co-relation 161. Up to 66 conditions per place. [2023-01-28 03:50:25,965 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 44 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2023-01-28 03:50:25,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 307 flow [2023-01-28 03:50:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 03:50:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 03:50:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 740 transitions. [2023-01-28 03:50:25,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-28 03:50:25,967 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 740 transitions. [2023-01-28 03:50:25,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 740 transitions. [2023-01-28 03:50:25,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:50:25,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 740 transitions. [2023-01-28 03:50:25,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 61.666666666666664) internal successors, (740), 12 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 148.0) internal successors, (1924), 13 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,973 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 148.0) internal successors, (1924), 13 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,973 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 70 flow. Second operand 12 states and 740 transitions. [2023-01-28 03:50:25,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 62 transitions, 307 flow [2023-01-28 03:50:25,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 03:50:25,974 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 174 flow [2023-01-28 03:50:25,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=174, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-01-28 03:50:25,975 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 18 predicate places. [2023-01-28 03:50:25,975 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 174 flow [2023-01-28 03:50:25,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:25,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:25,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:25,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:50:26,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:50:26,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:50:26,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash -800121287, now seen corresponding path program 1 times [2023-01-28 03:50:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:26,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879931968] [2023-01-28 03:50:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:26,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:26,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879931968] [2023-01-28 03:50:26,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879931968] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:50:26,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777937450] [2023-01-28 03:50:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:26,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:50:26,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:50:26,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:50:26,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 03:50:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:26,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 03:50:26,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:50:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:27,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:50:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:27,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777937450] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:50:27,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:50:27,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-01-28 03:50:27,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149066561] [2023-01-28 03:50:27,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:50:27,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:50:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:50:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:50:27,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:50:27,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 174 flow. Second operand has 20 states, 20 states have (on average 54.25) internal successors, (1085), 20 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:27,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:27,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:50:27,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:50:28,637 INFO L130 PetriNetUnfolder]: 429/757 cut-off events. [2023-01-28 03:50:28,637 INFO L131 PetriNetUnfolder]: For 1007/1007 co-relation queries the response was YES. [2023-01-28 03:50:28,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 757 events. 429/757 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3329 event pairs, 12 based on Foata normal form. 5/762 useless extension candidates. Maximal degree in co-relation 1497. Up to 203 conditions per place. [2023-01-28 03:50:28,642 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 97 selfloop transitions, 94 changer transitions 34/225 dead transitions. [2023-01-28 03:50:28,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 225 transitions, 1551 flow [2023-01-28 03:50:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-28 03:50:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-28 03:50:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2121 transitions. [2023-01-28 03:50:28,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38732651570489407 [2023-01-28 03:50:28,646 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2121 transitions. [2023-01-28 03:50:28,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2121 transitions. [2023-01-28 03:50:28,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:50:28,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2121 transitions. [2023-01-28 03:50:28,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 57.32432432432432) internal successors, (2121), 37 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:28,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 148.0) internal successors, (5624), 38 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:28,657 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 148.0) internal successors, (5624), 38 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:28,657 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 174 flow. Second operand 37 states and 2121 transitions. [2023-01-28 03:50:28,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 225 transitions, 1551 flow [2023-01-28 03:50:28,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 225 transitions, 1496 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-01-28 03:50:28,664 INFO L231 Difference]: Finished difference. Result has 92 places, 127 transitions, 1097 flow [2023-01-28 03:50:28,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1097, PETRI_PLACES=92, PETRI_TRANSITIONS=127} [2023-01-28 03:50:28,664 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 70 predicate places. [2023-01-28 03:50:28,664 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 127 transitions, 1097 flow [2023-01-28 03:50:28,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.25) internal successors, (1085), 20 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:28,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:28,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:28,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 03:50:28,870 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,SelfDestructingSolverStorable2 [2023-01-28 03:50:28,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:50:28,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:28,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1631516584, now seen corresponding path program 2 times [2023-01-28 03:50:28,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:28,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964609093] [2023-01-28 03:50:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:28,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:50:29,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:29,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964609093] [2023-01-28 03:50:29,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964609093] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:50:29,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:50:29,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:50:29,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190636243] [2023-01-28 03:50:29,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:50:29,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:50:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:50:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:50:29,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-28 03:50:29,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 127 transitions, 1097 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:29,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-28 03:50:29,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:50:29,182 INFO L130 PetriNetUnfolder]: 503/890 cut-off events. [2023-01-28 03:50:29,182 INFO L131 PetriNetUnfolder]: For 4815/4815 co-relation queries the response was YES. [2023-01-28 03:50:29,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 890 events. 503/890 cut-off events. For 4815/4815 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4069 event pairs, 72 based on Foata normal form. 8/898 useless extension candidates. Maximal degree in co-relation 4308. Up to 343 conditions per place. [2023-01-28 03:50:29,189 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 148 selfloop transitions, 68 changer transitions 0/216 dead transitions. [2023-01-28 03:50:29,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 216 transitions, 2256 flow [2023-01-28 03:50:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:50:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:50:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 472 transitions. [2023-01-28 03:50:29,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2023-01-28 03:50:29,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 472 transitions. [2023-01-28 03:50:29,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 472 transitions. [2023-01-28 03:50:29,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:50:29,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 472 transitions. [2023-01-28 03:50:29,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,193 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,193 INFO L175 Difference]: Start difference. First operand has 92 places, 127 transitions, 1097 flow. Second operand 7 states and 472 transitions. [2023-01-28 03:50:29,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 216 transitions, 2256 flow [2023-01-28 03:50:29,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 216 transitions, 1915 flow, removed 156 selfloop flow, removed 11 redundant places. [2023-01-28 03:50:29,214 INFO L231 Difference]: Finished difference. Result has 88 places, 164 transitions, 1486 flow [2023-01-28 03:50:29,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1486, PETRI_PLACES=88, PETRI_TRANSITIONS=164} [2023-01-28 03:50:29,214 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 66 predicate places. [2023-01-28 03:50:29,215 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 164 transitions, 1486 flow [2023-01-28 03:50:29,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:29,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:29,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 03:50:29,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:50:29,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:29,215 INFO L85 PathProgramCache]: Analyzing trace with hash 624053438, now seen corresponding path program 3 times [2023-01-28 03:50:29,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:29,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117575330] [2023-01-28 03:50:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:29,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:50:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117575330] [2023-01-28 03:50:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117575330] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:50:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:50:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:50:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083534862] [2023-01-28 03:50:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:50:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:50:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:29,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:50:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:50:29,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-28 03:50:29,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 164 transitions, 1486 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:29,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-28 03:50:29,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:50:29,454 INFO L130 PetriNetUnfolder]: 497/872 cut-off events. [2023-01-28 03:50:29,454 INFO L131 PetriNetUnfolder]: For 5287/5287 co-relation queries the response was YES. [2023-01-28 03:50:29,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 872 events. 497/872 cut-off events. For 5287/5287 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3925 event pairs, 127 based on Foata normal form. 8/874 useless extension candidates. Maximal degree in co-relation 3701. Up to 501 conditions per place. [2023-01-28 03:50:29,460 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 142 selfloop transitions, 53 changer transitions 0/195 dead transitions. [2023-01-28 03:50:29,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 195 transitions, 2070 flow [2023-01-28 03:50:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:50:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:50:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2023-01-28 03:50:29,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2023-01-28 03:50:29,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 336 transitions. [2023-01-28 03:50:29,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 336 transitions. [2023-01-28 03:50:29,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:50:29,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 336 transitions. [2023-01-28 03:50:29,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,463 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,463 INFO L175 Difference]: Start difference. First operand has 88 places, 164 transitions, 1486 flow. Second operand 5 states and 336 transitions. [2023-01-28 03:50:29,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 195 transitions, 2070 flow [2023-01-28 03:50:29,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 195 transitions, 2030 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-01-28 03:50:29,484 INFO L231 Difference]: Finished difference. Result has 94 places, 166 transitions, 1656 flow [2023-01-28 03:50:29,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1656, PETRI_PLACES=94, PETRI_TRANSITIONS=166} [2023-01-28 03:50:29,485 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 72 predicate places. [2023-01-28 03:50:29,485 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 166 transitions, 1656 flow [2023-01-28 03:50:29,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:29,485 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:29,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 03:50:29,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:50:29,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1966469734, now seen corresponding path program 4 times [2023-01-28 03:50:29,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:29,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957325371] [2023-01-28 03:50:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:29,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:50:29,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957325371] [2023-01-28 03:50:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957325371] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:50:29,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:50:29,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:50:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493432993] [2023-01-28 03:50:29,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:50:29,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:50:29,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:50:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:50:29,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-28 03:50:29,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 166 transitions, 1656 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:29,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-28 03:50:29,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:50:29,774 INFO L130 PetriNetUnfolder]: 495/858 cut-off events. [2023-01-28 03:50:29,774 INFO L131 PetriNetUnfolder]: For 5709/5709 co-relation queries the response was YES. [2023-01-28 03:50:29,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 858 events. 495/858 cut-off events. For 5709/5709 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3792 event pairs, 76 based on Foata normal form. 4/856 useless extension candidates. Maximal degree in co-relation 3851. Up to 343 conditions per place. [2023-01-28 03:50:29,780 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 135 selfloop transitions, 67 changer transitions 0/202 dead transitions. [2023-01-28 03:50:29,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 202 transitions, 2263 flow [2023-01-28 03:50:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:50:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:50:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2023-01-28 03:50:29,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581081081081081 [2023-01-28 03:50:29,782 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2023-01-28 03:50:29,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2023-01-28 03:50:29,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:50:29,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2023-01-28 03:50:29,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,783 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,784 INFO L175 Difference]: Start difference. First operand has 94 places, 166 transitions, 1656 flow. Second operand 5 states and 339 transitions. [2023-01-28 03:50:29,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 202 transitions, 2263 flow [2023-01-28 03:50:29,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 202 transitions, 2235 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-28 03:50:29,807 INFO L231 Difference]: Finished difference. Result has 96 places, 165 transitions, 1745 flow [2023-01-28 03:50:29,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1745, PETRI_PLACES=96, PETRI_TRANSITIONS=165} [2023-01-28 03:50:29,809 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 74 predicate places. [2023-01-28 03:50:29,809 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 165 transitions, 1745 flow [2023-01-28 03:50:29,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:29,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:29,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:29,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 03:50:29,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:50:29,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash -722109947, now seen corresponding path program 1 times [2023-01-28 03:50:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:29,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371986466] [2023-01-28 03:50:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:29,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:30,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:30,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371986466] [2023-01-28 03:50:30,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371986466] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:50:30,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892148134] [2023-01-28 03:50:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:30,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:50:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:50:30,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:50:30,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 03:50:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:30,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 03:50:30,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:50:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:31,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:50:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:32,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892148134] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:50:32,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:50:32,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-01-28 03:50:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660678248] [2023-01-28 03:50:32,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:50:32,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 03:50:32,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 03:50:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2023-01-28 03:50:32,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:50:32,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 165 transitions, 1745 flow. Second operand has 25 states, 25 states have (on average 54.12) internal successors, (1353), 25 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:32,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:32,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:50:32,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:50:43,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 03:50:51,708 INFO L130 PetriNetUnfolder]: 1243/2184 cut-off events. [2023-01-28 03:50:51,708 INFO L131 PetriNetUnfolder]: For 13949/13949 co-relation queries the response was YES. [2023-01-28 03:50:51,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11497 conditions, 2184 events. 1243/2184 cut-off events. For 13949/13949 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12195 event pairs, 0 based on Foata normal form. 10/2188 useless extension candidates. Maximal degree in co-relation 10883. Up to 435 conditions per place. [2023-01-28 03:50:51,722 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 238 selfloop transitions, 311 changer transitions 92/641 dead transitions. [2023-01-28 03:50:51,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 641 transitions, 7327 flow [2023-01-28 03:50:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-01-28 03:50:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-01-28 03:50:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3594 transitions. [2023-01-28 03:50:51,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38545688545688545 [2023-01-28 03:50:51,731 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3594 transitions. [2023-01-28 03:50:51,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3594 transitions. [2023-01-28 03:50:51,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:50:51,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3594 transitions. [2023-01-28 03:50:51,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 57.04761904761905) internal successors, (3594), 63 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:51,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:51,750 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:51,750 INFO L175 Difference]: Start difference. First operand has 96 places, 165 transitions, 1745 flow. Second operand 63 states and 3594 transitions. [2023-01-28 03:50:51,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 641 transitions, 7327 flow [2023-01-28 03:50:51,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 641 transitions, 6935 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 03:50:51,814 INFO L231 Difference]: Finished difference. Result has 179 places, 392 transitions, 4964 flow [2023-01-28 03:50:51,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=4964, PETRI_PLACES=179, PETRI_TRANSITIONS=392} [2023-01-28 03:50:51,815 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 157 predicate places. [2023-01-28 03:50:51,815 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 392 transitions, 4964 flow [2023-01-28 03:50:51,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 54.12) internal successors, (1353), 25 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:51,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:51,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:51,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:50:52,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:50:52,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:50:52,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1771081357, now seen corresponding path program 2 times [2023-01-28 03:50:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:52,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848653375] [2023-01-28 03:50:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:52,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848653375] [2023-01-28 03:50:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848653375] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:50:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452737024] [2023-01-28 03:50:52,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:50:52,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:50:52,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:50:52,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:50:52,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 03:50:52,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:50:52,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:50:52,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 03:50:52,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:50:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:52,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:50:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:50:55,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452737024] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:50:55,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:50:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2023-01-28 03:50:55,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898148630] [2023-01-28 03:50:55,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:50:55,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 03:50:55,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 03:50:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2023-01-28 03:50:55,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 148 [2023-01-28 03:50:55,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 392 transitions, 4964 flow. Second operand has 25 states, 25 states have (on average 56.28) internal successors, (1407), 25 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:55,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:55,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 148 [2023-01-28 03:50:55,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:51:04,101 INFO L130 PetriNetUnfolder]: 1839/3229 cut-off events. [2023-01-28 03:51:04,101 INFO L131 PetriNetUnfolder]: For 24471/24471 co-relation queries the response was YES. [2023-01-28 03:51:04,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19022 conditions, 3229 events. 1839/3229 cut-off events. For 24471/24471 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19456 event pairs, 15 based on Foata normal form. 13/3238 useless extension candidates. Maximal degree in co-relation 18902. Up to 812 conditions per place. [2023-01-28 03:51:04,126 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 298 selfloop transitions, 456 changer transitions 113/867 dead transitions. [2023-01-28 03:51:04,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 867 transitions, 11557 flow [2023-01-28 03:51:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-01-28 03:51:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-01-28 03:51:04,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3447 transitions. [2023-01-28 03:51:04,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40156104380242313 [2023-01-28 03:51:04,132 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3447 transitions. [2023-01-28 03:51:04,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3447 transitions. [2023-01-28 03:51:04,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:51:04,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3447 transitions. [2023-01-28 03:51:04,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 59.43103448275862) internal successors, (3447), 58 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:04,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:04,148 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:04,148 INFO L175 Difference]: Start difference. First operand has 179 places, 392 transitions, 4964 flow. Second operand 58 states and 3447 transitions. [2023-01-28 03:51:04,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 867 transitions, 11557 flow [2023-01-28 03:51:04,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 867 transitions, 11327 flow, removed 107 selfloop flow, removed 12 redundant places. [2023-01-28 03:51:04,284 INFO L231 Difference]: Finished difference. Result has 242 places, 607 transitions, 9382 flow [2023-01-28 03:51:04,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=4814, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=9382, PETRI_PLACES=242, PETRI_TRANSITIONS=607} [2023-01-28 03:51:04,285 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 220 predicate places. [2023-01-28 03:51:04,285 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 607 transitions, 9382 flow [2023-01-28 03:51:04,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 56.28) internal successors, (1407), 25 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:04,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:51:04,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:51:04,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 03:51:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:51:04,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:51:04,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:51:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash -567010117, now seen corresponding path program 3 times [2023-01-28 03:51:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:51:04,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856632783] [2023-01-28 03:51:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:51:04,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:51:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:51:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:51:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856632783] [2023-01-28 03:51:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856632783] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:51:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189123045] [2023-01-28 03:51:04,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:51:04,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:51:04,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:51:04,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:51:04,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 03:51:04,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:51:04,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:51:04,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 03:51:04,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:51:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:04,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:51:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189123045] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:51:04,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:51:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 10 [2023-01-28 03:51:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227402499] [2023-01-28 03:51:04,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:51:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:51:04,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:51:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:51:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:51:04,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-01-28 03:51:04,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 607 transitions, 9382 flow. Second operand has 10 states, 10 states have (on average 61.4) internal successors, (614), 10 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:04,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:51:04,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-01-28 03:51:04,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:51:05,664 INFO L130 PetriNetUnfolder]: 2351/4022 cut-off events. [2023-01-28 03:51:05,665 INFO L131 PetriNetUnfolder]: For 41312/41312 co-relation queries the response was YES. [2023-01-28 03:51:05,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26861 conditions, 4022 events. 2351/4022 cut-off events. For 41312/41312 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24700 event pairs, 51 based on Foata normal form. 34/4048 useless extension candidates. Maximal degree in co-relation 26701. Up to 842 conditions per place. [2023-01-28 03:51:05,700 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 330 selfloop transitions, 632 changer transitions 0/962 dead transitions. [2023-01-28 03:51:05,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 962 transitions, 16304 flow [2023-01-28 03:51:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 03:51:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 03:51:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2023-01-28 03:51:05,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412681912681913 [2023-01-28 03:51:05,702 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2023-01-28 03:51:05,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2023-01-28 03:51:05,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:51:05,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2023-01-28 03:51:05,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:05,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:05,705 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:05,705 INFO L175 Difference]: Start difference. First operand has 242 places, 607 transitions, 9382 flow. Second operand 13 states and 849 transitions. [2023-01-28 03:51:05,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 962 transitions, 16304 flow [2023-01-28 03:51:06,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 962 transitions, 15883 flow, removed 179 selfloop flow, removed 26 redundant places. [2023-01-28 03:51:06,107 INFO L231 Difference]: Finished difference. Result has 222 places, 837 transitions, 14953 flow [2023-01-28 03:51:06,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=9107, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14953, PETRI_PLACES=222, PETRI_TRANSITIONS=837} [2023-01-28 03:51:06,108 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 200 predicate places. [2023-01-28 03:51:06,108 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 837 transitions, 14953 flow [2023-01-28 03:51:06,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.4) internal successors, (614), 10 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:06,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:51:06,108 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:51:06,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 03:51:06,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:51:06,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:51:06,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:51:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash -319686935, now seen corresponding path program 4 times [2023-01-28 03:51:06,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:51:06,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240029775] [2023-01-28 03:51:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:51:06,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:51:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:51:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:51:07,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240029775] [2023-01-28 03:51:07,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240029775] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:51:07,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294239427] [2023-01-28 03:51:07,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:51:07,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:51:07,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:51:07,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:51:07,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 03:51:07,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:51:07,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:51:07,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 03:51:07,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:51:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:08,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:51:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:09,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294239427] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:51:09,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:51:09,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2023-01-28 03:51:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875119768] [2023-01-28 03:51:09,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:51:09,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 03:51:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:51:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 03:51:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-01-28 03:51:09,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:51:09,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 837 transitions, 14953 flow. Second operand has 27 states, 27 states have (on average 54.111111111111114) internal successors, (1461), 27 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:09,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:51:09,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:51:09,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:51:30,749 INFO L130 PetriNetUnfolder]: 3077/5345 cut-off events. [2023-01-28 03:51:30,750 INFO L131 PetriNetUnfolder]: For 67791/67791 co-relation queries the response was YES. [2023-01-28 03:51:30,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39243 conditions, 5345 events. 3077/5345 cut-off events. For 67791/67791 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35407 event pairs, 18 based on Foata normal form. 15/5350 useless extension candidates. Maximal degree in co-relation 38515. Up to 1977 conditions per place. [2023-01-28 03:51:30,791 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 462 selfloop transitions, 731 changer transitions 106/1299 dead transitions. [2023-01-28 03:51:30,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1299 transitions, 23674 flow [2023-01-28 03:51:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-01-28 03:51:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-01-28 03:51:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 3801 transitions. [2023-01-28 03:51:30,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3833198870512303 [2023-01-28 03:51:30,794 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 3801 transitions. [2023-01-28 03:51:30,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 3801 transitions. [2023-01-28 03:51:30,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:51:30,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 3801 transitions. [2023-01-28 03:51:30,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 56.73134328358209) internal successors, (3801), 67 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:30,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 148.0) internal successors, (10064), 68 states have internal predecessors, (10064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:30,808 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 148.0) internal successors, (10064), 68 states have internal predecessors, (10064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:30,808 INFO L175 Difference]: Start difference. First operand has 222 places, 837 transitions, 14953 flow. Second operand 67 states and 3801 transitions. [2023-01-28 03:51:30,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1299 transitions, 23674 flow [2023-01-28 03:51:31,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1299 transitions, 22880 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-01-28 03:51:31,390 INFO L231 Difference]: Finished difference. Result has 312 places, 1042 transitions, 21007 flow [2023-01-28 03:51:31,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=14361, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=546, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=21007, PETRI_PLACES=312, PETRI_TRANSITIONS=1042} [2023-01-28 03:51:31,391 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 290 predicate places. [2023-01-28 03:51:31,391 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 1042 transitions, 21007 flow [2023-01-28 03:51:31,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 54.111111111111114) internal successors, (1461), 27 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:31,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:51:31,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:51:31,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 03:51:31,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:51:31,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:51:31,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:51:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1054529367, now seen corresponding path program 5 times [2023-01-28 03:51:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:51:31,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191986916] [2023-01-28 03:51:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:51:31,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:51:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:51:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:32,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:51:32,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191986916] [2023-01-28 03:51:32,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191986916] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:51:32,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691490496] [2023-01-28 03:51:32,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:51:32,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:51:32,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:51:32,563 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:51:32,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 03:51:32,676 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:51:32,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:51:32,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 03:51:32,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:51:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:33,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:51:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:51:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691490496] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:51:34,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:51:34,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-01-28 03:51:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347896382] [2023-01-28 03:51:34,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:51:34,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 03:51:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:51:34,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 03:51:34,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2023-01-28 03:51:34,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:51:34,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 1042 transitions, 21007 flow. Second operand has 26 states, 26 states have (on average 54.19230769230769) internal successors, (1409), 26 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:51:34,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:51:34,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:51:34,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:52:08,798 INFO L130 PetriNetUnfolder]: 3815/6634 cut-off events. [2023-01-28 03:52:08,798 INFO L131 PetriNetUnfolder]: For 107596/107596 co-relation queries the response was YES. [2023-01-28 03:52:08,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52929 conditions, 6634 events. 3815/6634 cut-off events. For 107596/107596 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 46000 event pairs, 16 based on Foata normal form. 18/6642 useless extension candidates. Maximal degree in co-relation 52752. Up to 2374 conditions per place. [2023-01-28 03:52:08,852 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 495 selfloop transitions, 1029 changer transitions 137/1661 dead transitions. [2023-01-28 03:52:08,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1661 transitions, 33858 flow [2023-01-28 03:52:08,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-01-28 03:52:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-01-28 03:52:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 4471 transitions. [2023-01-28 03:52:08,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38239822100581594 [2023-01-28 03:52:08,856 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 4471 transitions. [2023-01-28 03:52:08,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 4471 transitions. [2023-01-28 03:52:08,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:52:08,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 4471 transitions. [2023-01-28 03:52:08,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 56.59493670886076) internal successors, (4471), 79 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:08,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 148.0) internal successors, (11840), 80 states have internal predecessors, (11840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:08,869 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 148.0) internal successors, (11840), 80 states have internal predecessors, (11840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:08,870 INFO L175 Difference]: Start difference. First operand has 312 places, 1042 transitions, 21007 flow. Second operand 79 states and 4471 transitions. [2023-01-28 03:52:08,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1661 transitions, 33858 flow [2023-01-28 03:52:09,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1661 transitions, 32422 flow, removed 297 selfloop flow, removed 25 redundant places. [2023-01-28 03:52:09,911 INFO L231 Difference]: Finished difference. Result has 385 places, 1353 transitions, 30461 flow [2023-01-28 03:52:09,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=20081, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1042, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=30461, PETRI_PLACES=385, PETRI_TRANSITIONS=1353} [2023-01-28 03:52:09,912 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 363 predicate places. [2023-01-28 03:52:09,912 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1353 transitions, 30461 flow [2023-01-28 03:52:09,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.19230769230769) internal successors, (1409), 26 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:09,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:52:09,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:52:09,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 03:52:10,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:52:10,113 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:52:10,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:52:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1208967995, now seen corresponding path program 6 times [2023-01-28 03:52:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:52:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910638201] [2023-01-28 03:52:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:52:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:52:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:52:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:52:10,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:52:10,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910638201] [2023-01-28 03:52:10,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910638201] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:52:10,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693796451] [2023-01-28 03:52:10,965 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:52:10,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:52:10,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:52:10,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:52:10,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 03:52:11,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:52:11,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:52:11,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 03:52:11,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:52:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:52:11,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:52:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:52:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693796451] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:52:12,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:52:12,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-01-28 03:52:12,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441426860] [2023-01-28 03:52:12,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:52:12,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 03:52:12,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:52:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 03:52:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2023-01-28 03:52:12,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:52:12,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1353 transitions, 30461 flow. Second operand has 31 states, 31 states have (on average 53.83870967741935) internal successors, (1669), 31 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:12,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:52:12,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:52:12,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:52:24,257 INFO L130 PetriNetUnfolder]: 3977/6905 cut-off events. [2023-01-28 03:52:24,257 INFO L131 PetriNetUnfolder]: For 138286/138286 co-relation queries the response was YES. [2023-01-28 03:52:24,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61621 conditions, 6905 events. 3977/6905 cut-off events. For 138286/138286 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 48109 event pairs, 6 based on Foata normal form. 13/6912 useless extension candidates. Maximal degree in co-relation 61371. Up to 2427 conditions per place. [2023-01-28 03:52:24,321 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 303 selfloop transitions, 1399 changer transitions 89/1791 dead transitions. [2023-01-28 03:52:24,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1791 transitions, 41197 flow [2023-01-28 03:52:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-01-28 03:52:24,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-01-28 03:52:24,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3283 transitions. [2023-01-28 03:52:24,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38245573159366264 [2023-01-28 03:52:24,325 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3283 transitions. [2023-01-28 03:52:24,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3283 transitions. [2023-01-28 03:52:24,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:52:24,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3283 transitions. [2023-01-28 03:52:24,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 56.60344827586207) internal successors, (3283), 58 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:24,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:24,335 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:24,335 INFO L175 Difference]: Start difference. First operand has 385 places, 1353 transitions, 30461 flow. Second operand 58 states and 3283 transitions. [2023-01-28 03:52:24,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 1791 transitions, 41197 flow [2023-01-28 03:52:25,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1791 transitions, 40649 flow, removed 233 selfloop flow, removed 17 redundant places. [2023-01-28 03:52:25,860 INFO L231 Difference]: Finished difference. Result has 420 places, 1598 transitions, 40780 flow [2023-01-28 03:52:25,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=30093, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=40780, PETRI_PLACES=420, PETRI_TRANSITIONS=1598} [2023-01-28 03:52:25,861 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 398 predicate places. [2023-01-28 03:52:25,861 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 1598 transitions, 40780 flow [2023-01-28 03:52:25,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.83870967741935) internal successors, (1669), 31 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:25,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:52:25,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:52:25,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 03:52:26,062 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,SelfDestructingSolverStorable11 [2023-01-28 03:52:26,064 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:52:26,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:52:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1594707129, now seen corresponding path program 7 times [2023-01-28 03:52:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:52:26,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465241248] [2023-01-28 03:52:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:52:26,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:52:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:52:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:52:27,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:52:27,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465241248] [2023-01-28 03:52:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465241248] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:52:27,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846973125] [2023-01-28 03:52:27,015 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:52:27,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:52:27,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:52:27,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:52:27,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 03:52:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:52:27,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 03:52:27,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:52:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:52:27,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:52:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:52:29,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846973125] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:52:29,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:52:29,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-28 03:52:29,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990239060] [2023-01-28 03:52:29,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:52:29,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 03:52:29,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:52:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 03:52:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2023-01-28 03:52:29,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:52:29,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 1598 transitions, 40780 flow. Second operand has 30 states, 30 states have (on average 53.766666666666666) internal successors, (1613), 30 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:29,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:52:29,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:52:29,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:52:56,290 INFO L130 PetriNetUnfolder]: 4695/8116 cut-off events. [2023-01-28 03:52:56,291 INFO L131 PetriNetUnfolder]: For 198582/198582 co-relation queries the response was YES. [2023-01-28 03:52:56,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80276 conditions, 8116 events. 4695/8116 cut-off events. For 198582/198582 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 57755 event pairs, 10 based on Foata normal form. 12/8128 useless extension candidates. Maximal degree in co-relation 79988. Up to 1927 conditions per place. [2023-01-28 03:52:56,375 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 253 selfloop transitions, 1867 changer transitions 84/2204 dead transitions. [2023-01-28 03:52:56,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 2204 transitions, 56492 flow [2023-01-28 03:52:56,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-01-28 03:52:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-01-28 03:52:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4974 transitions. [2023-01-28 03:52:56,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819103194103194 [2023-01-28 03:52:56,380 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 4974 transitions. [2023-01-28 03:52:56,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 4974 transitions. [2023-01-28 03:52:56,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:52:56,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 4974 transitions. [2023-01-28 03:52:56,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 56.52272727272727) internal successors, (4974), 88 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:56,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 148.0) internal successors, (13172), 89 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:56,394 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 148.0) internal successors, (13172), 89 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:56,394 INFO L175 Difference]: Start difference. First operand has 420 places, 1598 transitions, 40780 flow. Second operand 88 states and 4974 transitions. [2023-01-28 03:52:56,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 2204 transitions, 56492 flow [2023-01-28 03:52:58,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 2204 transitions, 55321 flow, removed 220 selfloop flow, removed 20 redundant places. [2023-01-28 03:52:58,755 INFO L231 Difference]: Finished difference. Result has 492 places, 1960 transitions, 53409 flow [2023-01-28 03:52:58,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=40030, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1506, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=53409, PETRI_PLACES=492, PETRI_TRANSITIONS=1960} [2023-01-28 03:52:58,757 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 470 predicate places. [2023-01-28 03:52:58,758 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 1960 transitions, 53409 flow [2023-01-28 03:52:58,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.766666666666666) internal successors, (1613), 30 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:52:58,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:52:58,758 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:52:58,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 03:52:58,960 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,SelfDestructingSolverStorable12 [2023-01-28 03:52:58,961 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:52:58,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:52:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash 808345547, now seen corresponding path program 5 times [2023-01-28 03:52:58,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:52:58,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280286658] [2023-01-28 03:52:58,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:52:58,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:52:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:52:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:52:59,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:52:59,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280286658] [2023-01-28 03:52:59,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280286658] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:52:59,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212736125] [2023-01-28 03:52:59,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:52:59,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:52:59,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:52:59,403 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) [2023-01-28 03:52:59,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 03:52:59,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 03:52:59,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:52:59,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 03:52:59,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:52:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:52:59,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:53:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:53:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212736125] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:53:00,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:53:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-28 03:53:00,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459095029] [2023-01-28 03:53:00,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:53:00,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 03:53:00,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:53:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 03:53:00,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2023-01-28 03:53:00,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:53:00,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 1960 transitions, 53409 flow. Second operand has 30 states, 30 states have (on average 53.7) internal successors, (1611), 30 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:53:00,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:53:00,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:53:00,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:53:10,528 INFO L130 PetriNetUnfolder]: 5939/10335 cut-off events. [2023-01-28 03:53:10,529 INFO L131 PetriNetUnfolder]: For 263793/263793 co-relation queries the response was YES. [2023-01-28 03:53:10,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107697 conditions, 10335 events. 5939/10335 cut-off events. For 263793/263793 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 77089 event pairs, 60 based on Foata normal form. 19/10354 useless extension candidates. Maximal degree in co-relation 107331. Up to 2374 conditions per place. [2023-01-28 03:53:10,637 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 377 selfloop transitions, 2315 changer transitions 114/2806 dead transitions. [2023-01-28 03:53:10,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 2806 transitions, 78091 flow [2023-01-28 03:53:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-01-28 03:53:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-01-28 03:53:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 4298 transitions. [2023-01-28 03:53:10,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38211237553342814 [2023-01-28 03:53:10,641 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 4298 transitions. [2023-01-28 03:53:10,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 4298 transitions. [2023-01-28 03:53:10,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:53:10,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 4298 transitions. [2023-01-28 03:53:10,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 56.55263157894737) internal successors, (4298), 76 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:53:10,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 148.0) internal successors, (11396), 77 states have internal predecessors, (11396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:53:10,652 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 148.0) internal successors, (11396), 77 states have internal predecessors, (11396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:53:10,652 INFO L175 Difference]: Start difference. First operand has 492 places, 1960 transitions, 53409 flow. Second operand 76 states and 4298 transitions. [2023-01-28 03:53:10,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 2806 transitions, 78091 flow [2023-01-28 03:53:14,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 2806 transitions, 76525 flow, removed 506 selfloop flow, removed 26 redundant places. [2023-01-28 03:53:14,918 INFO L231 Difference]: Finished difference. Result has 561 places, 2561 transitions, 75141 flow [2023-01-28 03:53:14,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=52402, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1729, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=75141, PETRI_PLACES=561, PETRI_TRANSITIONS=2561} [2023-01-28 03:53:14,920 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 539 predicate places. [2023-01-28 03:53:14,920 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 2561 transitions, 75141 flow [2023-01-28 03:53:14,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.7) internal successors, (1611), 30 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:53:14,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:53:14,920 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:53:14,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 03:53:15,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 03:53:15,121 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:53:15,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:53:15,121 INFO L85 PathProgramCache]: Analyzing trace with hash 488184972, now seen corresponding path program 8 times [2023-01-28 03:53:15,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:53:15,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439677934] [2023-01-28 03:53:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:53:15,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:53:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:53:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:53:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:53:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439677934] [2023-01-28 03:53:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439677934] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:53:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345012649] [2023-01-28 03:53:16,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:53:16,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:53:16,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:53:16,419 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) [2023-01-28 03:53:16,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 03:53:16,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:53:16,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:53:16,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 03:53:16,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:53:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:53:17,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:53:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:53:23,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345012649] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:53:23,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:53:23,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-01-28 03:53:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669660059] [2023-01-28 03:53:23,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:53:23,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 03:53:23,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:53:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 03:53:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2023-01-28 03:53:23,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:53:23,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 2561 transitions, 75141 flow. Second operand has 29 states, 29 states have (on average 54.172413793103445) internal successors, (1571), 29 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:53:23,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:53:23,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:53:23,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:54:43,303 INFO L130 PetriNetUnfolder]: 7075/12358 cut-off events. [2023-01-28 03:54:43,304 INFO L131 PetriNetUnfolder]: For 362801/362801 co-relation queries the response was YES. [2023-01-28 03:54:43,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141291 conditions, 12358 events. 7075/12358 cut-off events. For 362801/362801 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 93773 event pairs, 4 based on Foata normal form. 32/12390 useless extension candidates. Maximal degree in co-relation 140971. Up to 4571 conditions per place. [2023-01-28 03:54:43,458 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 1216 selfloop transitions, 2060 changer transitions 223/3499 dead transitions. [2023-01-28 03:54:43,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 3499 transitions, 103507 flow [2023-01-28 03:54:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-01-28 03:54:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-01-28 03:54:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 5277 transitions. [2023-01-28 03:54:43,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3833914559721011 [2023-01-28 03:54:43,463 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 5277 transitions. [2023-01-28 03:54:43,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 5277 transitions. [2023-01-28 03:54:43,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:54:43,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 5277 transitions. [2023-01-28 03:54:43,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 56.74193548387097) internal successors, (5277), 93 states have internal predecessors, (5277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:54:43,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 148.0) internal successors, (13912), 94 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) [2023-01-28 03:54:43,477 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 148.0) internal successors, (13912), 94 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) [2023-01-28 03:54:43,477 INFO L175 Difference]: Start difference. First operand has 561 places, 2561 transitions, 75141 flow. Second operand 93 states and 5277 transitions. [2023-01-28 03:54:43,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 3499 transitions, 103507 flow [2023-01-28 03:54:50,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 3499 transitions, 100084 flow, removed 569 selfloop flow, removed 25 redundant places. [2023-01-28 03:54:50,830 INFO L231 Difference]: Finished difference. Result has 667 places, 3022 transitions, 95128 flow [2023-01-28 03:54:50,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=72702, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1674, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=95128, PETRI_PLACES=667, PETRI_TRANSITIONS=3022} [2023-01-28 03:54:50,831 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 645 predicate places. [2023-01-28 03:54:50,831 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 3022 transitions, 95128 flow [2023-01-28 03:54:50,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 54.172413793103445) internal successors, (1571), 29 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:54:50,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:54:50,832 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:54:50,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 03:54:51,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 03:54:51,033 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:54:51,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:54:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1690291124, now seen corresponding path program 9 times [2023-01-28 03:54:51,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:54:51,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006669066] [2023-01-28 03:54:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:54:51,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:54:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:54:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:54:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:54:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006669066] [2023-01-28 03:54:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006669066] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:54:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728991938] [2023-01-28 03:54:51,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:54:51,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:54:51,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:54:51,869 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) [2023-01-28 03:54:51,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 03:54:51,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:54:51,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:54:51,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 03:54:51,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:54:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:54:52,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:54:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:54:53,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728991938] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:54:53,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:54:53,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-01-28 03:54:53,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574098168] [2023-01-28 03:54:53,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:54:53,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 03:54:53,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:54:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 03:54:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-01-28 03:54:53,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 148 [2023-01-28 03:54:53,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 3022 transitions, 95128 flow. Second operand has 31 states, 31 states have (on average 56.03225806451613) internal successors, (1737), 31 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:54:53,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:54:53,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 148 [2023-01-28 03:54:53,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:55:30,627 INFO L130 PetriNetUnfolder]: 7520/13076 cut-off events. [2023-01-28 03:55:30,627 INFO L131 PetriNetUnfolder]: For 453939/453939 co-relation queries the response was YES. [2023-01-28 03:55:30,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157351 conditions, 13076 events. 7520/13076 cut-off events. For 453939/453939 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 100157 event pairs, 11 based on Foata normal form. 23/13099 useless extension candidates. Maximal degree in co-relation 156874. Up to 4879 conditions per place. [2023-01-28 03:55:30,814 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 1179 selfloop transitions, 2276 changer transitions 139/3594 dead transitions. [2023-01-28 03:55:30,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 3594 transitions, 115554 flow [2023-01-28 03:55:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-01-28 03:55:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-01-28 03:55:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3726 transitions. [2023-01-28 03:55:30,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996138996138996 [2023-01-28 03:55:30,818 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3726 transitions. [2023-01-28 03:55:30,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3726 transitions. [2023-01-28 03:55:30,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:55:30,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3726 transitions. [2023-01-28 03:55:30,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 59.142857142857146) internal successors, (3726), 63 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:55:30,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:55:30,827 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:55:30,827 INFO L175 Difference]: Start difference. First operand has 667 places, 3022 transitions, 95128 flow. Second operand 63 states and 3726 transitions. [2023-01-28 03:55:30,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 3594 transitions, 115554 flow [2023-01-28 03:55:39,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 3594 transitions, 114756 flow, removed 382 selfloop flow, removed 26 redundant places. [2023-01-28 03:55:39,520 INFO L231 Difference]: Finished difference. Result has 700 places, 3242 transitions, 111497 flow [2023-01-28 03:55:39,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=94556, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2068, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=878, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=111497, PETRI_PLACES=700, PETRI_TRANSITIONS=3242} [2023-01-28 03:55:39,523 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 678 predicate places. [2023-01-28 03:55:39,523 INFO L495 AbstractCegarLoop]: Abstraction has has 700 places, 3242 transitions, 111497 flow [2023-01-28 03:55:39,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 56.03225806451613) internal successors, (1737), 31 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:55:39,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:55:39,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:55:39,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 03:55:39,724 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,SelfDestructingSolverStorable15 [2023-01-28 03:55:39,724 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:55:39,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:55:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1527671576, now seen corresponding path program 10 times [2023-01-28 03:55:39,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:55:39,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078927376] [2023-01-28 03:55:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:55:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:55:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:55:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:55:40,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:55:40,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078927376] [2023-01-28 03:55:40,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078927376] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:55:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982379393] [2023-01-28 03:55:40,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:55:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:55:40,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:55:40,431 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) [2023-01-28 03:55:40,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 03:55:40,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:55:40,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:55:40,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 03:55:40,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:55:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:55:41,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:55:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:55:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982379393] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:55:42,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:55:42,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-28 03:55:42,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100945536] [2023-01-28 03:55:42,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:55:42,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 03:55:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:55:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 03:55:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2023-01-28 03:55:42,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:55:42,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 3242 transitions, 111497 flow. Second operand has 30 states, 30 states have (on average 53.96666666666667) internal successors, (1619), 30 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:55:42,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:55:42,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:55:42,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:56:39,770 INFO L130 PetriNetUnfolder]: 9166/15920 cut-off events. [2023-01-28 03:56:39,771 INFO L131 PetriNetUnfolder]: For 693042/693042 co-relation queries the response was YES. [2023-01-28 03:56:39,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203258 conditions, 15920 events. 9166/15920 cut-off events. For 693042/693042 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 125359 event pairs, 13 based on Foata normal form. 23/15943 useless extension candidates. Maximal degree in co-relation 202799. Up to 4028 conditions per place. [2023-01-28 03:56:40,005 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 817 selfloop transitions, 3468 changer transitions 145/4430 dead transitions. [2023-01-28 03:56:40,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 4430 transitions, 153499 flow [2023-01-28 03:56:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-01-28 03:56:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2023-01-28 03:56:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 6119 transitions. [2023-01-28 03:56:40,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828203203203203 [2023-01-28 03:56:40,010 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 6119 transitions. [2023-01-28 03:56:40,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 6119 transitions. [2023-01-28 03:56:40,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:56:40,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 6119 transitions. [2023-01-28 03:56:40,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 56.657407407407405) internal successors, (6119), 108 states have internal predecessors, (6119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:56:40,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 148.0) internal successors, (16132), 109 states have internal predecessors, (16132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:56:40,024 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 148.0) internal successors, (16132), 109 states have internal predecessors, (16132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:56:40,024 INFO L175 Difference]: Start difference. First operand has 700 places, 3242 transitions, 111497 flow. Second operand 108 states and 6119 transitions. [2023-01-28 03:56:40,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 4430 transitions, 153499 flow [2023-01-28 03:56:52,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 761 places, 4430 transitions, 152676 flow, removed 211 selfloop flow, removed 30 redundant places. [2023-01-28 03:56:52,648 INFO L231 Difference]: Finished difference. Result has 789 places, 3977 transitions, 147983 flow [2023-01-28 03:56:52,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=110914, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2760, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=147983, PETRI_PLACES=789, PETRI_TRANSITIONS=3977} [2023-01-28 03:56:52,651 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 767 predicate places. [2023-01-28 03:56:52,651 INFO L495 AbstractCegarLoop]: Abstraction has has 789 places, 3977 transitions, 147983 flow [2023-01-28 03:56:52,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.96666666666667) internal successors, (1619), 30 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:56:52,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:56:52,651 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:56:52,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 03:56:52,852 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,SelfDestructingSolverStorable16 [2023-01-28 03:56:52,852 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:56:52,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:56:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1153779590, now seen corresponding path program 11 times [2023-01-28 03:56:52,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:56:52,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350517410] [2023-01-28 03:56:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:56:52,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:56:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:56:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:56:53,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:56:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350517410] [2023-01-28 03:56:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350517410] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:56:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540737288] [2023-01-28 03:56:53,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:56:53,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:56:53,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:56:53,618 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) [2023-01-28 03:56:53,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 03:56:53,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:56:53,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:56:53,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 03:56:53,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:56:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:56:54,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:56:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:56:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540737288] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:56:55,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:56:55,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-01-28 03:56:55,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228349504] [2023-01-28 03:56:55,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:56:55,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 03:56:55,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:56:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 03:56:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2023-01-28 03:56:55,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:56:55,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 789 places, 3977 transitions, 147983 flow. Second operand has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:56:55,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:56:55,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:56:55,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:57:33,417 INFO L130 PetriNetUnfolder]: 9716/16905 cut-off events. [2023-01-28 03:57:33,418 INFO L131 PetriNetUnfolder]: For 831286/831286 co-relation queries the response was YES. [2023-01-28 03:57:33,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228406 conditions, 16905 events. 9716/16905 cut-off events. For 831286/831286 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 134391 event pairs, 36 based on Foata normal form. 28/16933 useless extension candidates. Maximal degree in co-relation 227863. Up to 6590 conditions per place. [2023-01-28 03:57:33,685 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 1350 selfloop transitions, 3090 changer transitions 141/4581 dead transitions. [2023-01-28 03:57:33,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 845 places, 4581 transitions, 172073 flow [2023-01-28 03:57:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-01-28 03:57:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-01-28 03:57:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 4129 transitions. [2023-01-28 03:57:33,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38748123123123124 [2023-01-28 03:57:33,689 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 4129 transitions. [2023-01-28 03:57:33,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 4129 transitions. [2023-01-28 03:57:33,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:57:33,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 4129 transitions. [2023-01-28 03:57:33,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 57.34722222222222) internal successors, (4129), 72 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:57:33,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 148.0) internal successors, (10804), 73 states have internal predecessors, (10804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:57:33,698 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 148.0) internal successors, (10804), 73 states have internal predecessors, (10804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:57:33,698 INFO L175 Difference]: Start difference. First operand has 789 places, 3977 transitions, 147983 flow. Second operand 72 states and 4129 transitions. [2023-01-28 03:57:33,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 845 places, 4581 transitions, 172073 flow [2023-01-28 03:57:51,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 4581 transitions, 169285 flow, removed 730 selfloop flow, removed 33 redundant places. [2023-01-28 03:57:52,032 INFO L231 Difference]: Finished difference. Result has 833 places, 4205 transitions, 161485 flow [2023-01-28 03:57:52,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=145640, PETRI_DIFFERENCE_MINUEND_PLACES=741, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2872, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1089, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=161485, PETRI_PLACES=833, PETRI_TRANSITIONS=4205} [2023-01-28 03:57:52,035 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 811 predicate places. [2023-01-28 03:57:52,035 INFO L495 AbstractCegarLoop]: Abstraction has has 833 places, 4205 transitions, 161485 flow [2023-01-28 03:57:52,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:57:52,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:57:52,035 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:57:52,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 03:57:52,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:57:52,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:57:52,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:57:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1004786846, now seen corresponding path program 12 times [2023-01-28 03:57:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:57:52,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395196987] [2023-01-28 03:57:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:57:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:57:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:57:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:57:54,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:57:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395196987] [2023-01-28 03:57:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395196987] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:57:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590145818] [2023-01-28 03:57:54,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:57:54,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:57:54,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:57:54,066 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) [2023-01-28 03:57:54,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 03:57:54,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:57:54,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:57:54,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 03:57:54,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:57:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:57:55,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:57:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:57:59,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590145818] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:57:59,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:57:59,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 29 [2023-01-28 03:57:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113137341] [2023-01-28 03:57:59,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:57:59,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 03:57:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:57:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 03:57:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2023-01-28 03:57:59,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 03:57:59,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 4205 transitions, 161485 flow. Second operand has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:57:59,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:57:59,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 03:57:59,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:36,679 WARN L222 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 153 DAG size of output: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:59:48,574 WARN L222 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 176 DAG size of output: 104 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:59:57,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 04:00:44,824 INFO L130 PetriNetUnfolder]: 12177/21255 cut-off events. [2023-01-28 04:00:44,824 INFO L131 PetriNetUnfolder]: For 1116900/1116900 co-relation queries the response was YES. [2023-01-28 04:00:45,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292489 conditions, 21255 events. 12177/21255 cut-off events. For 1116900/1116900 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 175716 event pairs, 88 based on Foata normal form. 57/21312 useless extension candidates. Maximal degree in co-relation 291957. Up to 5513 conditions per place. [2023-01-28 04:00:45,235 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 1067 selfloop transitions, 4366 changer transitions 320/5753 dead transitions. [2023-01-28 04:00:45,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 946 places, 5753 transitions, 223100 flow [2023-01-28 04:00:45,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-01-28 04:00:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-01-28 04:00:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 7133 transitions. [2023-01-28 04:00:45,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37949563736965314 [2023-01-28 04:00:45,240 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 7133 transitions. [2023-01-28 04:00:45,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 7133 transitions. [2023-01-28 04:00:45,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:45,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 7133 transitions. [2023-01-28 04:00:45,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 56.16535433070866) internal successors, (7133), 127 states have internal predecessors, (7133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:00:45,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 148.0) internal successors, (18944), 128 states have internal predecessors, (18944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:00:45,257 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 148.0) internal successors, (18944), 128 states have internal predecessors, (18944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:00:45,257 INFO L175 Difference]: Start difference. First operand has 833 places, 4205 transitions, 161485 flow. Second operand 127 states and 7133 transitions. [2023-01-28 04:00:45,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 946 places, 5753 transitions, 223100 flow [2023-01-28 04:01:11,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 918 places, 5753 transitions, 222501 flow, removed 153 selfloop flow, removed 28 redundant places. [2023-01-28 04:01:11,897 INFO L231 Difference]: Finished difference. Result has 984 places, 5238 transitions, 216976 flow [2023-01-28 04:01:11,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=161080, PETRI_DIFFERENCE_MINUEND_PLACES=792, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=216976, PETRI_PLACES=984, PETRI_TRANSITIONS=5238} [2023-01-28 04:01:11,900 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 962 predicate places. [2023-01-28 04:01:11,900 INFO L495 AbstractCegarLoop]: Abstraction has has 984 places, 5238 transitions, 216976 flow [2023-01-28 04:01:11,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:01:11,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:11,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:11,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:12,101 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:01:12,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash 897443102, now seen corresponding path program 13 times [2023-01-28 04:01:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:12,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523271181] [2023-01-28 04:01:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:12,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:01:12,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523271181] [2023-01-28 04:01:12,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523271181] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370285773] [2023-01-28 04:01:12,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:01:12,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:12,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:12,359 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) [2023-01-28 04:01:12,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 04:01:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:12,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 04:01:12,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:01:12,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:01:13,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370285773] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:13,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:13,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2023-01-28 04:01:13,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424335971] [2023-01-28 04:01:13,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:13,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 04:01:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:13,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 04:01:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:01:13,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-01-28 04:01:13,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 984 places, 5238 transitions, 216976 flow. Second operand has 14 states, 14 states have (on average 60.142857142857146) internal successors, (842), 14 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:01:13,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:13,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-01-28 04:01:13,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:51,075 INFO L130 PetriNetUnfolder]: 13975/24160 cut-off events. [2023-01-28 04:01:51,075 INFO L131 PetriNetUnfolder]: For 1527445/1527445 co-relation queries the response was YES. [2023-01-28 04:01:51,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369376 conditions, 24160 events. 13975/24160 cut-off events. For 1527445/1527445 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 197863 event pairs, 9 based on Foata normal form. 84/24244 useless extension candidates. Maximal degree in co-relation 368715. Up to 10187 conditions per place. [2023-01-28 04:01:51,671 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 2241 selfloop transitions, 4477 changer transitions 0/6718 dead transitions. [2023-01-28 04:01:51,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 987 places, 6718 transitions, 285768 flow [2023-01-28 04:01:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-28 04:01:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-28 04:01:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2136 transitions. [2023-01-28 04:01:51,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2023-01-28 04:01:51,675 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2136 transitions. [2023-01-28 04:01:51,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2136 transitions. [2023-01-28 04:01:51,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:51,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2136 transitions. [2023-01-28 04:01:51,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 64.72727272727273) internal successors, (2136), 33 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:01:51,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 148.0) internal successors, (5032), 34 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:01:51,681 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 148.0) internal successors, (5032), 34 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:01:51,681 INFO L175 Difference]: Start difference. First operand has 984 places, 5238 transitions, 216976 flow. Second operand 33 states and 2136 transitions. [2023-01-28 04:01:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 987 places, 6718 transitions, 285768 flow [2023-01-28 04:02:39,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 6718 transitions, 279042 flow, removed 1307 selfloop flow, removed 65 redundant places. [2023-01-28 04:02:39,638 INFO L231 Difference]: Finished difference. Result has 945 places, 6202 transitions, 274211 flow [2023-01-28 04:02:39,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=212052, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3626, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=274211, PETRI_PLACES=945, PETRI_TRANSITIONS=6202} [2023-01-28 04:02:39,642 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 923 predicate places. [2023-01-28 04:02:39,642 INFO L495 AbstractCegarLoop]: Abstraction has has 945 places, 6202 transitions, 274211 flow [2023-01-28 04:02:39,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 60.142857142857146) internal successors, (842), 14 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:02:39,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:02:39,642 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:02:39,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 04:02:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:39,842 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:02:39,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:02:39,843 INFO L85 PathProgramCache]: Analyzing trace with hash 131298591, now seen corresponding path program 14 times [2023-01-28 04:02:39,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:02:39,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106623803] [2023-01-28 04:02:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:02:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:02:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:02:49,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:02:49,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106623803] [2023-01-28 04:02:49,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106623803] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:02:49,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853206801] [2023-01-28 04:02:49,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:02:49,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:49,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:02:49,552 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) [2023-01-28 04:02:49,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 04:02:49,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:02:49,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:02:49,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 04:02:49,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:02:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:02:51,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:03:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:03:01,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853206801] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:03:01,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:03:01,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-01-28 04:03:01,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110724527] [2023-01-28 04:03:01,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:03:01,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 04:03:01,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:03:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 04:03:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=832, Unknown=1, NotChecked=0, Total=992 [2023-01-28 04:03:01,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 04:03:01,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 6202 transitions, 274211 flow. Second operand has 32 states, 32 states have (on average 54.15625) internal successors, (1733), 32 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:03:01,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:03:01,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 04:03:01,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:03:52,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 04:03:59,238 WARN L222 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 130 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-28 04:04:22,504 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:04:22,504 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:04:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-01-28 04:04:22,626 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 04:04:22,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 04:04:22,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:22,826 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 52/148 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 169272 conditions, 10818 events (6082/10817 cut-off events. For 716745/716745 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 95912 event pairs, 0 based on Foata normal form. 1/12195 useless extension candidates. Maximal degree in co-relation 169013. Up to 4773 conditions per place.). [2023-01-28 04:04:22,828 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 04:04:22,828 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 04:04:22,828 INFO L445 BasicCegarLoop]: Path program histogram: [14, 5, 1, 1] [2023-01-28 04:04:22,830 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:04:22,830 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:04:22,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:04:22 BasicIcfg [2023-01-28 04:04:22,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:04:22,832 INFO L158 Benchmark]: Toolchain (without parser) took 840634.25ms. Allocated memory was 620.8MB in the beginning and 6.0GB in the end (delta: 5.4GB). Free memory was 581.3MB in the beginning and 1.9GB in the end (delta: -1.3GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-01-28 04:04:22,832 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 436.2MB. Free memory is still 385.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:04:22,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.79ms. Allocated memory is still 620.8MB. Free memory was 580.9MB in the beginning and 570.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:04:22,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.97ms. Allocated memory is still 620.8MB. Free memory was 570.0MB in the beginning and 568.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:04:22,833 INFO L158 Benchmark]: Boogie Preprocessor took 20.67ms. Allocated memory is still 620.8MB. Free memory was 568.3MB in the beginning and 566.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:04:22,833 INFO L158 Benchmark]: RCFGBuilder took 328.62ms. Allocated memory is still 620.8MB. Free memory was 566.9MB in the beginning and 552.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 04:04:22,833 INFO L158 Benchmark]: TraceAbstraction took 840077.48ms. Allocated memory was 620.8MB in the beginning and 6.0GB in the end (delta: 5.4GB). Free memory was 551.1MB in the beginning and 1.9GB in the end (delta: -1.3GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-01-28 04:04:22,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 436.2MB. Free memory is still 385.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 184.79ms. Allocated memory is still 620.8MB. Free memory was 580.9MB in the beginning and 570.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 18.97ms. Allocated memory is still 620.8MB. Free memory was 570.0MB in the beginning and 568.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 20.67ms. Allocated memory is still 620.8MB. Free memory was 568.3MB in the beginning and 566.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 328.62ms. Allocated memory is still 620.8MB. Free memory was 566.9MB in the beginning and 552.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 840077.48ms. Allocated memory was 620.8MB in the beginning and 6.0GB in the end (delta: 5.4GB). Free memory was 551.1MB in the beginning and 1.9GB in the end (delta: -1.3GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 74 PlacesBefore, 22 PlacesAfterwards, 73 TransitionsBefore, 17 TransitionsAfterwards, 396 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 65 TotalNumberOfCompositions, 617 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 529, independent: 504, independent conditional: 0, independent unconditional: 504, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 218, independent: 213, independent conditional: 0, independent unconditional: 213, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 529, independent: 291, independent conditional: 0, independent unconditional: 291, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 218, unknown conditional: 0, unknown unconditional: 218] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 52/148 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 169272 conditions, 10818 events (6082/10817 cut-off events. For 716745/716745 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 95912 event pairs, 0 based on Foata normal form. 1/12195 useless extension candidates. Maximal degree in co-relation 169013. Up to 4773 conditions per place.). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 52/148 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 169272 conditions, 10818 events (6082/10817 cut-off events. For 716745/716745 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 95912 event pairs, 0 based on Foata normal form. 1/12195 useless extension candidates. Maximal degree in co-relation 169013. Up to 4773 conditions per place.). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 52/148 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 169272 conditions, 10818 events (6082/10817 cut-off events. For 716745/716745 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 95912 event pairs, 0 based on Foata normal form. 1/12195 useless extension candidates. Maximal degree in co-relation 169013. Up to 4773 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 840.0s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 766.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4926 SdHoareTripleChecker+Valid, 77.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4926 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 73.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 1206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21879 IncrementalHoareTripleChecker+Invalid, 23085 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1206 mSolverCounterUnsat, 14 mSDtfsCounter, 21879 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1715 GetRequests, 375 SyntacticMatches, 25 SemanticMatches, 1315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39344 ImplicationChecksByTransitivity, 446.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274211occurred in iteration=20, InterpolantAutomatonStates: 1068, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 66.3s InterpolantComputationTime, 726 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1002 ConstructedInterpolants, 0 QuantifiedInterpolants, 38242 SizeOfPredicates, 160 NumberOfNonLiveVariables, 2244 ConjunctsInSsa, 472 ConjunctsInUnsatCore, 55 InterpolantComputations, 4 PerfectInterpolantSequences, 18/363 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