/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:00:10,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:00:10,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:00:10,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:00:10,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:00:10,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:00:10,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:00:10,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:00:10,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:00:10,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:00:10,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:00:10,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:00:10,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:00:10,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:00:10,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:00:10,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:00:10,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:00:10,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:00:10,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:00:10,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:00:10,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:00:10,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:00:10,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:00:10,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:00:10,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:00:10,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:00:10,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:00:10,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:00:10,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:00:10,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:00:10,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:00:10,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:00:10,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:00:10,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:00:10,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:00:10,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:00:10,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:00:10,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:00:10,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:00:10,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:00:10,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:00:10,804 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 07:00:10,817 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:00:10,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:00:10,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:00:10,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:00:10,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:00:10,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:00:10,818 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:00:10,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:00:10,818 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:00:10,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:00:10,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:00:10,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:00:10,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:00:10,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:00:10,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:00:10,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:00:10,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:00:10,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:00:10,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:00:10,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:00:10,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:00:10,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:00:10,821 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:00:11,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:00:11,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:00:11,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:00:11,029 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:00:11,029 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:00:11,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-01-28 07:00:12,126 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:00:12,315 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:00:12,316 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-01-28 07:00:12,325 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395c4159d/6362e0c0c25348c386e49e7c4caf16fa/FLAGb0e5441f8 [2023-01-28 07:00:12,348 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395c4159d/6362e0c0c25348c386e49e7c4caf16fa [2023-01-28 07:00:12,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:00:12,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:00:12,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:00:12,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:00:12,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:00:12,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b024138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12, skipping insertion in model container [2023-01-28 07:00:12,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:00:12,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:00:12,580 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2023-01-28 07:00:12,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:00:12,782 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:00:12,791 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2023-01-28 07:00:12,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:00:12,868 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:00:12,868 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:00:12,873 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:00:12,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12 WrapperNode [2023-01-28 07:00:12,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:00:12,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:00:12,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:00:12,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:00:12,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,932 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-01-28 07:00:12,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:00:12,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:00:12,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:00:12,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:00:12,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,977 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:00:12,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:00:12,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:00:12,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:00:12,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (1/1) ... [2023-01-28 07:00:12,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:00:12,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:00:13,005 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 07:00:13,037 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 07:00:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:00:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:00:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:00:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:00:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:00:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:00:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:00:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:00:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:00:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:00:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:00:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:00:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:00:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:00:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:00:13,050 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 07:00:13,156 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:00:13,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:00:13,424 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:00:13,586 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:00:13,586 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:00:13,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:00:13 BoogieIcfgContainer [2023-01-28 07:00:13,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:00:13,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:00:13,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:00:13,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:00:13,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:00:12" (1/3) ... [2023-01-28 07:00:13,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6243a7d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:00:13, skipping insertion in model container [2023-01-28 07:00:13,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:12" (2/3) ... [2023-01-28 07:00:13,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6243a7d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:00:13, skipping insertion in model container [2023-01-28 07:00:13,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:00:13" (3/3) ... [2023-01-28 07:00:13,595 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-01-28 07:00:13,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:00:13,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 07:00:13,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:00:13,654 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:00:13,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 107 transitions, 229 flow [2023-01-28 07:00:13,748 INFO L130 PetriNetUnfolder]: 2/104 cut-off events. [2023-01-28 07:00:13,748 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:13,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-01-28 07:00:13,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 107 transitions, 229 flow [2023-01-28 07:00:13,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 104 transitions, 217 flow [2023-01-28 07:00:13,757 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:00:13,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 104 transitions, 217 flow [2023-01-28 07:00:13,769 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 104 transitions, 217 flow [2023-01-28 07:00:13,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 104 transitions, 217 flow [2023-01-28 07:00:13,798 INFO L130 PetriNetUnfolder]: 2/104 cut-off events. [2023-01-28 07:00:13,798 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:13,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-01-28 07:00:13,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 1920 [2023-01-28 07:00:16,147 INFO L134 LiptonReduction]: Checked pairs total: 5019 [2023-01-28 07:00:16,148 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-01-28 07:00:16,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:00:16,174 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;@2ed4b325, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:00:16,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 07:00:16,176 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-01-28 07:00:16,176 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:16,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:16,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-01-28 07:00:16,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:16,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:16,181 INFO L85 PathProgramCache]: Analyzing trace with hash 534214, now seen corresponding path program 1 times [2023-01-28 07:00:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624700223] [2023-01-28 07:00:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:16,469 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 07:00:16,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:16,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624700223] [2023-01-28 07:00:16,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624700223] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:16,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:16,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:00:16,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353744820] [2023-01-28 07:00:16,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:16,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:00:16,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:00:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:00:16,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 198 [2023-01-28 07:00:16,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 07:00:16,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:16,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 198 [2023-01-28 07:00:16,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:16,810 INFO L130 PetriNetUnfolder]: 1263/2016 cut-off events. [2023-01-28 07:00:16,811 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-28 07:00:16,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 2016 events. 1263/2016 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10879 event pairs, 204 based on Foata normal form. 80/1935 useless extension candidates. Maximal degree in co-relation 3916. Up to 1510 conditions per place. [2023-01-28 07:00:16,822 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 33 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2023-01-28 07:00:16,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 175 flow [2023-01-28 07:00:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:00:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:00:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-01-28 07:00:16,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2023-01-28 07:00:16,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-01-28 07:00:16,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-01-28 07:00:16,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:16,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-01-28 07:00:16,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:16,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:16,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:16,847 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 315 transitions. [2023-01-28 07:00:16,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 175 flow [2023-01-28 07:00:16,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:16,850 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 54 flow [2023-01-28 07:00:16,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-01-28 07:00:16,855 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-01-28 07:00:16,855 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 54 flow [2023-01-28 07:00:16,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 07:00:16,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:16,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:16,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:00:16,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:16,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1598286958, now seen corresponding path program 1 times [2023-01-28 07:00:16,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:16,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967251655] [2023-01-28 07:00:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:16,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:17,650 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 07:00:17,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:17,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967251655] [2023-01-28 07:00:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967251655] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:17,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:17,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682427438] [2023-01-28 07:00:17,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:17,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:17,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:17,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:17,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-01-28 07:00:17,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 07:00:17,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:17,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-01-28 07:00:17,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:18,105 INFO L130 PetriNetUnfolder]: 1800/2681 cut-off events. [2023-01-28 07:00:18,105 INFO L131 PetriNetUnfolder]: For 151/151 co-relation queries the response was YES. [2023-01-28 07:00:18,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5580 conditions, 2681 events. 1800/2681 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11994 event pairs, 334 based on Foata normal form. 145/2826 useless extension candidates. Maximal degree in co-relation 5570. Up to 1761 conditions per place. [2023-01-28 07:00:18,115 INFO L137 encePairwiseOnDemand]: 187/198 looper letters, 34 selfloop transitions, 9 changer transitions 30/73 dead transitions. [2023-01-28 07:00:18,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 73 transitions, 308 flow [2023-01-28 07:00:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:00:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:00:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2023-01-28 07:00:18,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44372294372294374 [2023-01-28 07:00:18,117 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 615 transitions. [2023-01-28 07:00:18,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 615 transitions. [2023-01-28 07:00:18,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:18,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 615 transitions. [2023-01-28 07:00:18,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 07:00:18,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:18,122 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:18,122 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 54 flow. Second operand 7 states and 615 transitions. [2023-01-28 07:00:18,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 73 transitions, 308 flow [2023-01-28 07:00:18,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 73 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:00:18,124 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 136 flow [2023-01-28 07:00:18,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-01-28 07:00:18,125 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-01-28 07:00:18,125 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 136 flow [2023-01-28 07:00:18,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 07:00:18,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:18,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:18,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:00:18,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:18,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:18,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1992708335, now seen corresponding path program 1 times [2023-01-28 07:00:18,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:18,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566738769] [2023-01-28 07:00:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:18,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:18,729 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 07:00:18,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566738769] [2023-01-28 07:00:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566738769] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:18,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:18,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664214979] [2023-01-28 07:00:18,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:18,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:18,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:18,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:18,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-01-28 07:00:18,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 07:00:18,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:18,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-01-28 07:00:18,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:19,165 INFO L130 PetriNetUnfolder]: 1587/2383 cut-off events. [2023-01-28 07:00:19,165 INFO L131 PetriNetUnfolder]: For 2173/2173 co-relation queries the response was YES. [2023-01-28 07:00:19,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 2383 events. 1587/2383 cut-off events. For 2173/2173 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10444 event pairs, 450 based on Foata normal form. 120/2503 useless extension candidates. Maximal degree in co-relation 7603. Up to 1311 conditions per place. [2023-01-28 07:00:19,178 INFO L137 encePairwiseOnDemand]: 188/198 looper letters, 39 selfloop transitions, 9 changer transitions 31/79 dead transitions. [2023-01-28 07:00:19,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 79 transitions, 510 flow [2023-01-28 07:00:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:00:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:00:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2023-01-28 07:00:19,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44083694083694086 [2023-01-28 07:00:19,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2023-01-28 07:00:19,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2023-01-28 07:00:19,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:19,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2023-01-28 07:00:19,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 07:00:19,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:19,184 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:19,184 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 136 flow. Second operand 7 states and 611 transitions. [2023-01-28 07:00:19,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 79 transitions, 510 flow [2023-01-28 07:00:19,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 79 transitions, 500 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 07:00:19,197 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 222 flow [2023-01-28 07:00:19,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-01-28 07:00:19,198 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-01-28 07:00:19,198 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 222 flow [2023-01-28 07:00:19,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 07:00:19,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:19,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:19,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:00:19,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:19,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1577430061, now seen corresponding path program 1 times [2023-01-28 07:00:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:19,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830201360] [2023-01-28 07:00:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:19,777 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 07:00:19,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830201360] [2023-01-28 07:00:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830201360] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:19,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:19,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:00:19,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747945940] [2023-01-28 07:00:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:00:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:00:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:00:19,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-01-28 07:00:19,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 07:00:19,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:19,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-01-28 07:00:19,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:20,190 INFO L130 PetriNetUnfolder]: 2276/3384 cut-off events. [2023-01-28 07:00:20,190 INFO L131 PetriNetUnfolder]: For 5458/5458 co-relation queries the response was YES. [2023-01-28 07:00:20,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12248 conditions, 3384 events. 2276/3384 cut-off events. For 5458/5458 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16107 event pairs, 432 based on Foata normal form. 90/3474 useless extension candidates. Maximal degree in co-relation 12226. Up to 1638 conditions per place. [2023-01-28 07:00:20,205 INFO L137 encePairwiseOnDemand]: 185/198 looper letters, 40 selfloop transitions, 17 changer transitions 33/90 dead transitions. [2023-01-28 07:00:20,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 90 transitions, 729 flow [2023-01-28 07:00:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:00:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:00:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 532 transitions. [2023-01-28 07:00:20,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2023-01-28 07:00:20,206 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 532 transitions. [2023-01-28 07:00:20,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 532 transitions. [2023-01-28 07:00:20,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:20,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 532 transitions. [2023-01-28 07:00:20,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 07:00:20,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 07:00:20,210 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 07:00:20,210 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 222 flow. Second operand 6 states and 532 transitions. [2023-01-28 07:00:20,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 90 transitions, 729 flow [2023-01-28 07:00:20,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 90 transitions, 702 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-28 07:00:20,231 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 269 flow [2023-01-28 07:00:20,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-01-28 07:00:20,232 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-01-28 07:00:20,232 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 269 flow [2023-01-28 07:00:20,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 07:00:20,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:20,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:20,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:00:20,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:20,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:20,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1644459811, now seen corresponding path program 2 times [2023-01-28 07:00:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:20,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370334477] [2023-01-28 07:00:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:20,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:20,929 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 07:00:20,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370334477] [2023-01-28 07:00:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370334477] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:20,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:20,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:00:20,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184278027] [2023-01-28 07:00:20,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:20,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:00:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:00:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:00:20,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 198 [2023-01-28 07:00:20,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 269 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 07:00:20,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:20,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 198 [2023-01-28 07:00:20,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:21,473 INFO L130 PetriNetUnfolder]: 2088/3135 cut-off events. [2023-01-28 07:00:21,473 INFO L131 PetriNetUnfolder]: For 5348/5348 co-relation queries the response was YES. [2023-01-28 07:00:21,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12605 conditions, 3135 events. 2088/3135 cut-off events. For 5348/5348 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15130 event pairs, 231 based on Foata normal form. 107/3242 useless extension candidates. Maximal degree in co-relation 12582. Up to 1541 conditions per place. [2023-01-28 07:00:21,489 INFO L137 encePairwiseOnDemand]: 185/198 looper letters, 48 selfloop transitions, 21 changer transitions 64/133 dead transitions. [2023-01-28 07:00:21,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 133 transitions, 1208 flow [2023-01-28 07:00:21,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:00:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:00:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 775 transitions. [2023-01-28 07:00:21,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43490460157126826 [2023-01-28 07:00:21,491 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 775 transitions. [2023-01-28 07:00:21,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 775 transitions. [2023-01-28 07:00:21,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:21,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 775 transitions. [2023-01-28 07:00:21,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.11111111111111) internal successors, (775), 9 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 07:00:21,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 07:00:21,496 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 07:00:21,496 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 269 flow. Second operand 9 states and 775 transitions. [2023-01-28 07:00:21,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 133 transitions, 1208 flow [2023-01-28 07:00:21,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 133 transitions, 1078 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-01-28 07:00:21,510 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 339 flow [2023-01-28 07:00:21,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=339, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-01-28 07:00:21,512 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-01-28 07:00:21,512 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 339 flow [2023-01-28 07:00:21,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 07:00:21,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:21,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:21,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:00:21,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:21,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:21,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1711533748, now seen corresponding path program 1 times [2023-01-28 07:00:21,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:21,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190426637] [2023-01-28 07:00:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:21,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:22,156 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 07:00:22,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:22,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190426637] [2023-01-28 07:00:22,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190426637] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:22,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:22,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:22,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472002679] [2023-01-28 07:00:22,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:22,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:22,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:22,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:22,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-01-28 07:00:22,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states 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 07:00:22,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:22,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-01-28 07:00:22,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:22,526 INFO L130 PetriNetUnfolder]: 1275/1955 cut-off events. [2023-01-28 07:00:22,527 INFO L131 PetriNetUnfolder]: For 6375/6375 co-relation queries the response was YES. [2023-01-28 07:00:22,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8799 conditions, 1955 events. 1275/1955 cut-off events. For 6375/6375 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8487 event pairs, 558 based on Foata normal form. 74/2029 useless extension candidates. Maximal degree in co-relation 8773. Up to 1565 conditions per place. [2023-01-28 07:00:22,539 INFO L137 encePairwiseOnDemand]: 187/198 looper letters, 51 selfloop transitions, 25 changer transitions 21/97 dead transitions. [2023-01-28 07:00:22,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 97 transitions, 910 flow [2023-01-28 07:00:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:00:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:00:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2023-01-28 07:00:22,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443001443001443 [2023-01-28 07:00:22,541 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2023-01-28 07:00:22,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2023-01-28 07:00:22,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:22,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2023-01-28 07:00:22,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 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 07:00:22,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:22,544 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:22,544 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 339 flow. Second operand 7 states and 614 transitions. [2023-01-28 07:00:22,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 97 transitions, 910 flow [2023-01-28 07:00:22,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 97 transitions, 828 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 07:00:22,554 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 474 flow [2023-01-28 07:00:22,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-01-28 07:00:22,555 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2023-01-28 07:00:22,555 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 474 flow [2023-01-28 07:00:22,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states 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 07:00:22,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:22,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:22,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:00:22,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:22,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 681217372, now seen corresponding path program 1 times [2023-01-28 07:00:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:22,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591710991] [2023-01-28 07:00:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:23,035 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 07:00:23,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591710991] [2023-01-28 07:00:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591710991] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:23,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:00:23,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037718974] [2023-01-28 07:00:23,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:23,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:23,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:23,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-01-28 07:00:23,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 07:00:23,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:23,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-01-28 07:00:23,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:23,403 INFO L130 PetriNetUnfolder]: 1707/2632 cut-off events. [2023-01-28 07:00:23,404 INFO L131 PetriNetUnfolder]: For 11580/11580 co-relation queries the response was YES. [2023-01-28 07:00:23,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12458 conditions, 2632 events. 1707/2632 cut-off events. For 11580/11580 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12383 event pairs, 589 based on Foata normal form. 81/2713 useless extension candidates. Maximal degree in co-relation 12428. Up to 1265 conditions per place. [2023-01-28 07:00:23,418 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 58 selfloop transitions, 12 changer transitions 24/94 dead transitions. [2023-01-28 07:00:23,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 916 flow [2023-01-28 07:00:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:00:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:00:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-01-28 07:00:23,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436026936026936 [2023-01-28 07:00:23,419 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-01-28 07:00:23,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-01-28 07:00:23,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:23,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-01-28 07:00:23,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 07:00:23,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 07:00:23,462 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 07:00:23,462 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 474 flow. Second operand 6 states and 527 transitions. [2023-01-28 07:00:23,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 916 flow [2023-01-28 07:00:23,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 904 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:23,482 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 466 flow [2023-01-28 07:00:23,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-01-28 07:00:23,483 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-01-28 07:00:23,483 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 466 flow [2023-01-28 07:00:23,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 07:00:23,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:23,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:23,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:00:23,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:23,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:23,484 INFO L85 PathProgramCache]: Analyzing trace with hash -268845576, now seen corresponding path program 1 times [2023-01-28 07:00:23,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:23,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890772496] [2023-01-28 07:00:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:23,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:23,894 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 07:00:23,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890772496] [2023-01-28 07:00:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890772496] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:23,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:23,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:00:23,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697950624] [2023-01-28 07:00:23,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:23,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:00:23,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:23,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:00:23,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:00:23,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 198 [2023-01-28 07:00:23,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 466 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 07:00:23,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:23,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 198 [2023-01-28 07:00:23,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:24,268 INFO L130 PetriNetUnfolder]: 1392/2231 cut-off events. [2023-01-28 07:00:24,268 INFO L131 PetriNetUnfolder]: For 10937/11009 co-relation queries the response was YES. [2023-01-28 07:00:24,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10607 conditions, 2231 events. 1392/2231 cut-off events. For 10937/11009 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11145 event pairs, 230 based on Foata normal form. 154/2380 useless extension candidates. Maximal degree in co-relation 10574. Up to 1391 conditions per place. [2023-01-28 07:00:24,278 INFO L137 encePairwiseOnDemand]: 192/198 looper letters, 47 selfloop transitions, 10 changer transitions 37/96 dead transitions. [2023-01-28 07:00:24,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 1049 flow [2023-01-28 07:00:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:00:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:00:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 560 transitions. [2023-01-28 07:00:24,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713804713804714 [2023-01-28 07:00:24,280 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 560 transitions. [2023-01-28 07:00:24,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 560 transitions. [2023-01-28 07:00:24,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:24,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 560 transitions. [2023-01-28 07:00:24,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 07:00:24,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 07:00:24,283 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 07:00:24,283 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 466 flow. Second operand 6 states and 560 transitions. [2023-01-28 07:00:24,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 1049 flow [2023-01-28 07:00:24,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 1025 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:24,295 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 437 flow [2023-01-28 07:00:24,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=437, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2023-01-28 07:00:24,295 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 31 predicate places. [2023-01-28 07:00:24,295 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 437 flow [2023-01-28 07:00:24,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 07:00:24,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:24,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:24,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:00:24,296 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:24,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1533629952, now seen corresponding path program 1 times [2023-01-28 07:00:24,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:24,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552212630] [2023-01-28 07:00:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:24,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:24,822 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 07:00:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552212630] [2023-01-28 07:00:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552212630] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:24,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:24,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 07:00:24,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816850672] [2023-01-28 07:00:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:24,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:00:24,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:24,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:00:24,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:00:24,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-01-28 07:00:24,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 437 flow. Second operand has 8 states, 8 states have (on average 83.75) internal successors, (670), 8 states have internal predecessors, (670), 0 states have call successors, (0), 0 states 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 07:00:24,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:24,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-01-28 07:00:24,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:25,152 INFO L130 PetriNetUnfolder]: 1115/1778 cut-off events. [2023-01-28 07:00:25,152 INFO L131 PetriNetUnfolder]: For 10428/10446 co-relation queries the response was YES. [2023-01-28 07:00:25,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8888 conditions, 1778 events. 1115/1778 cut-off events. For 10428/10446 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8130 event pairs, 652 based on Foata normal form. 62/1840 useless extension candidates. Maximal degree in co-relation 8852. Up to 1499 conditions per place. [2023-01-28 07:00:25,162 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 51 selfloop transitions, 7 changer transitions 15/75 dead transitions. [2023-01-28 07:00:25,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 792 flow [2023-01-28 07:00:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:00:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:00:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2023-01-28 07:00:25,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2023-01-28 07:00:25,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 546 transitions. [2023-01-28 07:00:25,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 546 transitions. [2023-01-28 07:00:25,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:25,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 546 transitions. [2023-01-28 07:00:25,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 07:00:25,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 07:00:25,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 07:00:25,166 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 437 flow. Second operand 6 states and 546 transitions. [2023-01-28 07:00:25,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 792 flow [2023-01-28 07:00:25,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 687 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-01-28 07:00:25,178 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 387 flow [2023-01-28 07:00:25,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2023-01-28 07:00:25,178 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-01-28 07:00:25,178 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 387 flow [2023-01-28 07:00:25,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.75) internal successors, (670), 8 states have internal predecessors, (670), 0 states have call successors, (0), 0 states 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 07:00:25,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:25,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:25,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:00:25,179 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:25,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash 798857469, now seen corresponding path program 1 times [2023-01-28 07:00:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757453456] [2023-01-28 07:00:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:25,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:26,031 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 07:00:26,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:26,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757453456] [2023-01-28 07:00:26,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757453456] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:26,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:26,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 07:00:26,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141808351] [2023-01-28 07:00:26,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:26,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 07:00:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 07:00:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:00:26,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 198 [2023-01-28 07:00:26,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 07:00:26,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:26,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 198 [2023-01-28 07:00:26,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:26,550 INFO L130 PetriNetUnfolder]: 1272/2027 cut-off events. [2023-01-28 07:00:26,551 INFO L131 PetriNetUnfolder]: For 10297/10319 co-relation queries the response was YES. [2023-01-28 07:00:26,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9438 conditions, 2027 events. 1272/2027 cut-off events. For 10297/10319 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9636 event pairs, 512 based on Foata normal form. 92/2119 useless extension candidates. Maximal degree in co-relation 9405. Up to 1466 conditions per place. [2023-01-28 07:00:26,561 INFO L137 encePairwiseOnDemand]: 188/198 looper letters, 65 selfloop transitions, 27 changer transitions 25/119 dead transitions. [2023-01-28 07:00:26,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 119 transitions, 1128 flow [2023-01-28 07:00:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 07:00:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 07:00:26,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 950 transitions. [2023-01-28 07:00:26,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361799816345271 [2023-01-28 07:00:26,563 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 950 transitions. [2023-01-28 07:00:26,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 950 transitions. [2023-01-28 07:00:26,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:26,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 950 transitions. [2023-01-28 07:00:26,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 86.36363636363636) internal successors, (950), 11 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 07:00:26,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 07:00:26,567 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 07:00:26,567 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 387 flow. Second operand 11 states and 950 transitions. [2023-01-28 07:00:26,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 119 transitions, 1128 flow [2023-01-28 07:00:26,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 119 transitions, 1080 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-01-28 07:00:26,581 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 626 flow [2023-01-28 07:00:26,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=626, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-01-28 07:00:26,582 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 35 predicate places. [2023-01-28 07:00:26,582 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 626 flow [2023-01-28 07:00:26,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 07:00:26,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:26,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:26,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:00:26,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:26,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1925820901, now seen corresponding path program 2 times [2023-01-28 07:00:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:26,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402020783] [2023-01-28 07:00:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:26,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:27,205 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 07:00:27,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:27,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402020783] [2023-01-28 07:00:27,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402020783] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:27,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:27,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 07:00:27,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907601346] [2023-01-28 07:00:27,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:27,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 07:00:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:27,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 07:00:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:00:27,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 198 [2023-01-28 07:00:27,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 626 flow. Second operand has 9 states, 9 states have (on average 82.66666666666667) internal successors, (744), 9 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 07:00:27,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:27,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 198 [2023-01-28 07:00:27,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:27,652 INFO L130 PetriNetUnfolder]: 1298/2093 cut-off events. [2023-01-28 07:00:27,652 INFO L131 PetriNetUnfolder]: For 12860/12883 co-relation queries the response was YES. [2023-01-28 07:00:27,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11061 conditions, 2093 events. 1298/2093 cut-off events. For 12860/12883 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10192 event pairs, 555 based on Foata normal form. 68/2161 useless extension candidates. Maximal degree in co-relation 11026. Up to 1550 conditions per place. [2023-01-28 07:00:27,662 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 71 selfloop transitions, 19 changer transitions 27/119 dead transitions. [2023-01-28 07:00:27,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 119 transitions, 1304 flow [2023-01-28 07:00:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:00:27,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:00:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 810 transitions. [2023-01-28 07:00:27,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-01-28 07:00:27,664 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 810 transitions. [2023-01-28 07:00:27,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 810 transitions. [2023-01-28 07:00:27,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:27,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 810 transitions. [2023-01-28 07:00:27,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 07:00:27,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 07:00:27,668 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 07:00:27,668 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 626 flow. Second operand 9 states and 810 transitions. [2023-01-28 07:00:27,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 119 transitions, 1304 flow [2023-01-28 07:00:27,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 119 transitions, 1259 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-01-28 07:00:27,683 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 682 flow [2023-01-28 07:00:27,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-01-28 07:00:27,684 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 40 predicate places. [2023-01-28 07:00:27,684 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 682 flow [2023-01-28 07:00:27,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.66666666666667) internal successors, (744), 9 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 07:00:27,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:27,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:27,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 07:00:27,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:27,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1923085713, now seen corresponding path program 1 times [2023-01-28 07:00:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:27,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650936921] [2023-01-28 07:00:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:27,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:28,156 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 07:00:28,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:28,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650936921] [2023-01-28 07:00:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650936921] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:28,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:28,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 07:00:28,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502958712] [2023-01-28 07:00:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:28,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 07:00:28,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 07:00:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:00:28,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 198 [2023-01-28 07:00:28,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 682 flow. Second operand has 9 states, 9 states have (on average 80.66666666666667) internal successors, (726), 9 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 07:00:28,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:28,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 198 [2023-01-28 07:00:28,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:28,661 INFO L130 PetriNetUnfolder]: 1307/2116 cut-off events. [2023-01-28 07:00:28,661 INFO L131 PetriNetUnfolder]: For 15120/15138 co-relation queries the response was YES. [2023-01-28 07:00:28,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11639 conditions, 2116 events. 1307/2116 cut-off events. For 15120/15138 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10428 event pairs, 252 based on Foata normal form. 52/2168 useless extension candidates. Maximal degree in co-relation 11602. Up to 992 conditions per place. [2023-01-28 07:00:28,674 INFO L137 encePairwiseOnDemand]: 189/198 looper letters, 95 selfloop transitions, 34 changer transitions 23/154 dead transitions. [2023-01-28 07:00:28,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 154 transitions, 1850 flow [2023-01-28 07:00:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 07:00:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 07:00:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 968 transitions. [2023-01-28 07:00:28,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-01-28 07:00:28,676 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 968 transitions. [2023-01-28 07:00:28,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 968 transitions. [2023-01-28 07:00:28,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:28,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 968 transitions. [2023-01-28 07:00:28,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.0) internal successors, (968), 11 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 07:00:28,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 07:00:28,681 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 07:00:28,681 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 682 flow. Second operand 11 states and 968 transitions. [2023-01-28 07:00:28,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 154 transitions, 1850 flow [2023-01-28 07:00:28,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 154 transitions, 1795 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 07:00:28,698 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 1087 flow [2023-01-28 07:00:28,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1087, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2023-01-28 07:00:28,699 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 49 predicate places. [2023-01-28 07:00:28,699 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 1087 flow [2023-01-28 07:00:28,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.66666666666667) internal successors, (726), 9 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 07:00:28,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:28,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:28,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 07:00:28,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:28,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash 222767061, now seen corresponding path program 2 times [2023-01-28 07:00:28,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:28,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972995207] [2023-01-28 07:00:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:29,044 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 07:00:29,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:29,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972995207] [2023-01-28 07:00:29,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972995207] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:29,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 07:00:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525178079] [2023-01-28 07:00:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:29,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:00:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:00:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:00:29,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 198 [2023-01-28 07:00:29,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 1087 flow. Second operand has 8 states, 8 states have (on average 82.875) internal successors, (663), 8 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 07:00:29,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:29,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 198 [2023-01-28 07:00:29,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:29,483 INFO L130 PetriNetUnfolder]: 1176/1943 cut-off events. [2023-01-28 07:00:29,483 INFO L131 PetriNetUnfolder]: For 21180/21198 co-relation queries the response was YES. [2023-01-28 07:00:29,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11923 conditions, 1943 events. 1176/1943 cut-off events. For 21180/21198 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9674 event pairs, 366 based on Foata normal form. 48/1991 useless extension candidates. Maximal degree in co-relation 11882. Up to 1135 conditions per place. [2023-01-28 07:00:29,497 INFO L137 encePairwiseOnDemand]: 189/198 looper letters, 75 selfloop transitions, 42 changer transitions 40/159 dead transitions. [2023-01-28 07:00:29,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 159 transitions, 2241 flow [2023-01-28 07:00:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 07:00:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 07:00:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 729 transitions. [2023-01-28 07:00:29,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2023-01-28 07:00:29,499 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 729 transitions. [2023-01-28 07:00:29,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 729 transitions. [2023-01-28 07:00:29,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:29,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 729 transitions. [2023-01-28 07:00:29,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 07:00:29,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states 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 07:00:29,503 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states 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 07:00:29,503 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 1087 flow. Second operand 8 states and 729 transitions. [2023-01-28 07:00:29,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 159 transitions, 2241 flow [2023-01-28 07:00:29,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 159 transitions, 2103 flow, removed 57 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:29,527 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 1359 flow [2023-01-28 07:00:29,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1359, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2023-01-28 07:00:29,528 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 56 predicate places. [2023-01-28 07:00:29,528 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 1359 flow [2023-01-28 07:00:29,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 82.875) internal successors, (663), 8 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 07:00:29,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:29,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:29,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 07:00:29,528 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:29,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 636761603, now seen corresponding path program 1 times [2023-01-28 07:00:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:29,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315124193] [2023-01-28 07:00:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:29,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:30,315 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 07:00:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315124193] [2023-01-28 07:00:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315124193] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:30,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 07:00:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16947447] [2023-01-28 07:00:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:30,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:00:30,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:00:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 07:00:30,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-01-28 07:00:30,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 78.6) internal successors, (786), 10 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 07:00:30,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:30,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-01-28 07:00:30,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:31,210 INFO L130 PetriNetUnfolder]: 1202/2046 cut-off events. [2023-01-28 07:00:31,211 INFO L131 PetriNetUnfolder]: For 25367/25395 co-relation queries the response was YES. [2023-01-28 07:00:31,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13043 conditions, 2046 events. 1202/2046 cut-off events. For 25367/25395 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10771 event pairs, 167 based on Foata normal form. 84/2124 useless extension candidates. Maximal degree in co-relation 12998. Up to 1021 conditions per place. [2023-01-28 07:00:31,224 INFO L137 encePairwiseOnDemand]: 189/198 looper letters, 118 selfloop transitions, 43 changer transitions 29/192 dead transitions. [2023-01-28 07:00:31,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 192 transitions, 2862 flow [2023-01-28 07:00:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 07:00:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 07:00:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1188 transitions. [2023-01-28 07:00:31,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-01-28 07:00:31,227 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1188 transitions. [2023-01-28 07:00:31,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1188 transitions. [2023-01-28 07:00:31,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:31,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1188 transitions. [2023-01-28 07:00:31,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 84.85714285714286) internal successors, (1188), 14 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states 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 07:00:31,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 198.0) internal successors, (2970), 15 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states 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 07:00:31,232 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 198.0) internal successors, (2970), 15 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states 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 07:00:31,232 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 1359 flow. Second operand 14 states and 1188 transitions. [2023-01-28 07:00:31,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 192 transitions, 2862 flow [2023-01-28 07:00:31,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 192 transitions, 2701 flow, removed 80 selfloop flow, removed 5 redundant places. [2023-01-28 07:00:31,263 INFO L231 Difference]: Finished difference. Result has 104 places, 106 transitions, 1650 flow [2023-01-28 07:00:31,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1650, PETRI_PLACES=104, PETRI_TRANSITIONS=106} [2023-01-28 07:00:31,263 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 69 predicate places. [2023-01-28 07:00:31,263 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 106 transitions, 1650 flow [2023-01-28 07:00:31,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 78.6) internal successors, (786), 10 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 07:00:31,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:31,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:31,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 07:00:31,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:31,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1211780200, now seen corresponding path program 1 times [2023-01-28 07:00:31,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:31,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307282947] [2023-01-28 07:00:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:31,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:32,338 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 07:00:32,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:32,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307282947] [2023-01-28 07:00:32,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307282947] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:32,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:32,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 07:00:32,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337145393] [2023-01-28 07:00:32,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:32,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:00:32,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:32,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:00:32,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-28 07:00:32,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 198 [2023-01-28 07:00:32,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 106 transitions, 1650 flow. Second operand has 10 states, 10 states have (on average 81.6) internal successors, (816), 10 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 07:00:32,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:32,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 198 [2023-01-28 07:00:32,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:32,801 INFO L130 PetriNetUnfolder]: 1042/1818 cut-off events. [2023-01-28 07:00:32,801 INFO L131 PetriNetUnfolder]: For 23201/23217 co-relation queries the response was YES. [2023-01-28 07:00:32,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11697 conditions, 1818 events. 1042/1818 cut-off events. For 23201/23217 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9596 event pairs, 409 based on Foata normal form. 56/1868 useless extension candidates. Maximal degree in co-relation 11647. Up to 1435 conditions per place. [2023-01-28 07:00:32,812 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 97 selfloop transitions, 38 changer transitions 15/152 dead transitions. [2023-01-28 07:00:32,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 152 transitions, 2406 flow [2023-01-28 07:00:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:00:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:00:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 796 transitions. [2023-01-28 07:00:32,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44668911335578004 [2023-01-28 07:00:32,814 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 796 transitions. [2023-01-28 07:00:32,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 796 transitions. [2023-01-28 07:00:32,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:32,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 796 transitions. [2023-01-28 07:00:32,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 07:00:32,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 07:00:32,819 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 07:00:32,819 INFO L175 Difference]: Start difference. First operand has 104 places, 106 transitions, 1650 flow. Second operand 9 states and 796 transitions. [2023-01-28 07:00:32,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 152 transitions, 2406 flow [2023-01-28 07:00:32,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 2311 flow, removed 41 selfloop flow, removed 7 redundant places. [2023-01-28 07:00:32,856 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 1658 flow [2023-01-28 07:00:32,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1658, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2023-01-28 07:00:32,857 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 69 predicate places. [2023-01-28 07:00:32,857 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 1658 flow [2023-01-28 07:00:32,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.6) internal successors, (816), 10 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 07:00:32,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:32,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:32,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 07:00:32,857 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:32,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:32,858 INFO L85 PathProgramCache]: Analyzing trace with hash -272155952, now seen corresponding path program 1 times [2023-01-28 07:00:32,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:32,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784577992] [2023-01-28 07:00:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:32,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:32,989 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 07:00:32,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784577992] [2023-01-28 07:00:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784577992] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:32,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:32,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:32,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852760288] [2023-01-28 07:00:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:32,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:00:32,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:00:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:00:32,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-01-28 07:00:32,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 1658 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 07:00:32,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:32,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-01-28 07:00:32,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:33,128 INFO L130 PetriNetUnfolder]: 545/1023 cut-off events. [2023-01-28 07:00:33,129 INFO L131 PetriNetUnfolder]: For 14155/14181 co-relation queries the response was YES. [2023-01-28 07:00:33,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 1023 events. 545/1023 cut-off events. For 14155/14181 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5234 event pairs, 129 based on Foata normal form. 73/1091 useless extension candidates. Maximal degree in co-relation 6450. Up to 833 conditions per place. [2023-01-28 07:00:33,134 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 109 selfloop transitions, 4 changer transitions 1/121 dead transitions. [2023-01-28 07:00:33,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 121 transitions, 2046 flow [2023-01-28 07:00:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:00:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:00:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-01-28 07:00:33,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983164983164983 [2023-01-28 07:00:33,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-01-28 07:00:33,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-01-28 07:00:33,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:33,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-01-28 07:00:33,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 07:00:33,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:33,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:33,137 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 1658 flow. Second operand 3 states and 296 transitions. [2023-01-28 07:00:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 121 transitions, 2046 flow [2023-01-28 07:00:33,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 121 transitions, 1901 flow, removed 32 selfloop flow, removed 9 redundant places. [2023-01-28 07:00:33,151 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 1232 flow [2023-01-28 07:00:33,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1232, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-01-28 07:00:33,152 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 61 predicate places. [2023-01-28 07:00:33,152 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 1232 flow [2023-01-28 07:00:33,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 07:00:33,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:33,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:33,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 07:00:33,152 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:33,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1370010612, now seen corresponding path program 1 times [2023-01-28 07:00:33,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:33,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699915151] [2023-01-28 07:00:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:33,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:33,295 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 07:00:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699915151] [2023-01-28 07:00:33,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699915151] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:33,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:33,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:33,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303305064] [2023-01-28 07:00:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:33,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:33,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-01-28 07:00:33,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 1232 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 07:00:33,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:33,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-01-28 07:00:33,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:33,409 INFO L130 PetriNetUnfolder]: 258/552 cut-off events. [2023-01-28 07:00:33,409 INFO L131 PetriNetUnfolder]: For 6605/6616 co-relation queries the response was YES. [2023-01-28 07:00:33,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3684 conditions, 552 events. 258/552 cut-off events. For 6605/6616 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2604 event pairs, 40 based on Foata normal form. 64/611 useless extension candidates. Maximal degree in co-relation 3638. Up to 219 conditions per place. [2023-01-28 07:00:33,412 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 111 selfloop transitions, 7 changer transitions 2/125 dead transitions. [2023-01-28 07:00:33,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 125 transitions, 1959 flow [2023-01-28 07:00:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:00:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:00:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 393 transitions. [2023-01-28 07:00:33,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-01-28 07:00:33,412 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 393 transitions. [2023-01-28 07:00:33,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 393 transitions. [2023-01-28 07:00:33,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:33,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 393 transitions. [2023-01-28 07:00:33,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 07:00:33,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 07:00:33,415 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 07:00:33,415 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 1232 flow. Second operand 4 states and 393 transitions. [2023-01-28 07:00:33,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 125 transitions, 1959 flow [2023-01-28 07:00:33,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 125 transitions, 1888 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:33,424 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 1049 flow [2023-01-28 07:00:33,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1049, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2023-01-28 07:00:33,425 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 62 predicate places. [2023-01-28 07:00:33,425 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 1049 flow [2023-01-28 07:00:33,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 07:00:33,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:33,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:33,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 07:00:33,425 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:33,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:33,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1214453931, now seen corresponding path program 1 times [2023-01-28 07:00:33,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:33,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893272302] [2023-01-28 07:00:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:33,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:34,632 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 07:00:34,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:34,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893272302] [2023-01-28 07:00:34,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893272302] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:34,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:34,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 07:00:34,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83008777] [2023-01-28 07:00:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:34,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:00:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:00:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-01-28 07:00:34,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 198 [2023-01-28 07:00:34,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 07:00:34,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:34,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 198 [2023-01-28 07:00:34,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:35,185 INFO L130 PetriNetUnfolder]: 311/679 cut-off events. [2023-01-28 07:00:35,185 INFO L131 PetriNetUnfolder]: For 7932/7942 co-relation queries the response was YES. [2023-01-28 07:00:35,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4728 conditions, 679 events. 311/679 cut-off events. For 7932/7942 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3351 event pairs, 38 based on Foata normal form. 18/695 useless extension candidates. Maximal degree in co-relation 4682. Up to 377 conditions per place. [2023-01-28 07:00:35,188 INFO L137 encePairwiseOnDemand]: 188/198 looper letters, 85 selfloop transitions, 42 changer transitions 16/145 dead transitions. [2023-01-28 07:00:35,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 145 transitions, 2188 flow [2023-01-28 07:00:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 07:00:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 07:00:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1284 transitions. [2023-01-28 07:00:35,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43232323232323233 [2023-01-28 07:00:35,219 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1284 transitions. [2023-01-28 07:00:35,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1284 transitions. [2023-01-28 07:00:35,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:35,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1284 transitions. [2023-01-28 07:00:35,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 85.6) internal successors, (1284), 15 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 07:00:35,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 07:00:35,235 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 07:00:35,235 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 1049 flow. Second operand 15 states and 1284 transitions. [2023-01-28 07:00:35,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 145 transitions, 2188 flow [2023-01-28 07:00:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 2111 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:35,251 INFO L231 Difference]: Finished difference. Result has 116 places, 90 transitions, 1367 flow [2023-01-28 07:00:35,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1367, PETRI_PLACES=116, PETRI_TRANSITIONS=90} [2023-01-28 07:00:35,251 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 81 predicate places. [2023-01-28 07:00:35,251 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 90 transitions, 1367 flow [2023-01-28 07:00:35,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 07:00:35,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:35,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:35,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 07:00:35,252 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:35,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash -218599849, now seen corresponding path program 2 times [2023-01-28 07:00:35,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:35,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138473963] [2023-01-28 07:00:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:35,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:36,705 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 07:00:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138473963] [2023-01-28 07:00:36,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138473963] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:36,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:36,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 07:00:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660299996] [2023-01-28 07:00:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:36,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:00:36,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:36,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:00:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-28 07:00:36,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 198 [2023-01-28 07:00:36,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 90 transitions, 1367 flow. Second operand has 10 states, 10 states have (on average 77.9) internal successors, (779), 10 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 07:00:36,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:36,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 198 [2023-01-28 07:00:36,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:37,100 INFO L130 PetriNetUnfolder]: 258/599 cut-off events. [2023-01-28 07:00:37,100 INFO L131 PetriNetUnfolder]: For 8449/8464 co-relation queries the response was YES. [2023-01-28 07:00:37,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4250 conditions, 599 events. 258/599 cut-off events. For 8449/8464 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2993 event pairs, 58 based on Foata normal form. 21/620 useless extension candidates. Maximal degree in co-relation 4197. Up to 349 conditions per place. [2023-01-28 07:00:37,103 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 84 selfloop transitions, 22 changer transitions 14/122 dead transitions. [2023-01-28 07:00:37,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 122 transitions, 1941 flow [2023-01-28 07:00:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:00:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:00:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2023-01-28 07:00:37,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2023-01-28 07:00:37,105 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2023-01-28 07:00:37,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2023-01-28 07:00:37,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:37,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2023-01-28 07:00:37,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 07:00:37,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:37,107 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:37,107 INFO L175 Difference]: Start difference. First operand has 116 places, 90 transitions, 1367 flow. Second operand 7 states and 595 transitions. [2023-01-28 07:00:37,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 122 transitions, 1941 flow [2023-01-28 07:00:37,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 122 transitions, 1767 flow, removed 84 selfloop flow, removed 5 redundant places. [2023-01-28 07:00:37,124 INFO L231 Difference]: Finished difference. Result has 117 places, 81 transitions, 1131 flow [2023-01-28 07:00:37,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1131, PETRI_PLACES=117, PETRI_TRANSITIONS=81} [2023-01-28 07:00:37,124 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 82 predicate places. [2023-01-28 07:00:37,125 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 81 transitions, 1131 flow [2023-01-28 07:00:37,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.9) internal successors, (779), 10 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 07:00:37,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:37,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:37,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 07:00:37,125 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:37,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash 547497481, now seen corresponding path program 3 times [2023-01-28 07:00:37,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:37,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949434832] [2023-01-28 07:00:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:37,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:38,260 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 07:00:38,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:38,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949434832] [2023-01-28 07:00:38,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949434832] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:38,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:38,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 07:00:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765099131] [2023-01-28 07:00:38,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:38,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:00:38,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:00:38,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-28 07:00:38,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 198 [2023-01-28 07:00:38,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 81 transitions, 1131 flow. Second operand has 10 states, 10 states have (on average 80.9) internal successors, (809), 10 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 07:00:38,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:38,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 198 [2023-01-28 07:00:38,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:38,586 INFO L130 PetriNetUnfolder]: 223/476 cut-off events. [2023-01-28 07:00:38,587 INFO L131 PetriNetUnfolder]: For 5451/5451 co-relation queries the response was YES. [2023-01-28 07:00:38,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3262 conditions, 476 events. 223/476 cut-off events. For 5451/5451 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2028 event pairs, 56 based on Foata normal form. 6/482 useless extension candidates. Maximal degree in co-relation 3209. Up to 385 conditions per place. [2023-01-28 07:00:38,589 INFO L137 encePairwiseOnDemand]: 189/198 looper letters, 68 selfloop transitions, 13 changer transitions 23/105 dead transitions. [2023-01-28 07:00:38,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 105 transitions, 1511 flow [2023-01-28 07:00:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:00:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:00:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 771 transitions. [2023-01-28 07:00:38,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43265993265993263 [2023-01-28 07:00:38,591 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 771 transitions. [2023-01-28 07:00:38,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 771 transitions. [2023-01-28 07:00:38,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:38,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 771 transitions. [2023-01-28 07:00:38,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.66666666666667) internal successors, (771), 9 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 07:00:38,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 07:00:38,593 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 07:00:38,593 INFO L175 Difference]: Start difference. First operand has 117 places, 81 transitions, 1131 flow. Second operand 9 states and 771 transitions. [2023-01-28 07:00:38,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 105 transitions, 1511 flow [2023-01-28 07:00:38,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 1339 flow, removed 51 selfloop flow, removed 14 redundant places. [2023-01-28 07:00:38,605 INFO L231 Difference]: Finished difference. Result has 112 places, 70 transitions, 902 flow [2023-01-28 07:00:38,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=112, PETRI_TRANSITIONS=70} [2023-01-28 07:00:38,605 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 77 predicate places. [2023-01-28 07:00:38,605 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 70 transitions, 902 flow [2023-01-28 07:00:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.9) internal successors, (809), 10 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 07:00:38,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:38,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:38,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 07:00:38,606 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:38,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1423020015, now seen corresponding path program 1 times [2023-01-28 07:00:38,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:38,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050302295] [2023-01-28 07:00:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:38,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:39,581 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 07:00:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050302295] [2023-01-28 07:00:39,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050302295] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:39,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:39,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 07:00:39,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090415553] [2023-01-28 07:00:39,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:39,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 07:00:39,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:39,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 07:00:39,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-01-28 07:00:39,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 198 [2023-01-28 07:00:39,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 70 transitions, 902 flow. Second operand has 11 states, 11 states have (on average 81.72727272727273) internal successors, (899), 11 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 07:00:39,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:39,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 198 [2023-01-28 07:00:39,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:39,924 INFO L130 PetriNetUnfolder]: 291/590 cut-off events. [2023-01-28 07:00:39,924 INFO L131 PetriNetUnfolder]: For 6046/6046 co-relation queries the response was YES. [2023-01-28 07:00:39,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 590 events. 291/590 cut-off events. For 6046/6046 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2602 event pairs, 67 based on Foata normal form. 7/597 useless extension candidates. Maximal degree in co-relation 3706. Up to 236 conditions per place. [2023-01-28 07:00:39,942 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 85 selfloop transitions, 13 changer transitions 29/128 dead transitions. [2023-01-28 07:00:39,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 128 transitions, 1638 flow [2023-01-28 07:00:39,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 07:00:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 07:00:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 955 transitions. [2023-01-28 07:00:39,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43847566574839303 [2023-01-28 07:00:39,943 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 955 transitions. [2023-01-28 07:00:39,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 955 transitions. [2023-01-28 07:00:39,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:39,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 955 transitions. [2023-01-28 07:00:39,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 86.81818181818181) internal successors, (955), 11 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 07:00:39,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 07:00:39,946 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 07:00:39,946 INFO L175 Difference]: Start difference. First operand has 112 places, 70 transitions, 902 flow. Second operand 11 states and 955 transitions. [2023-01-28 07:00:39,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 128 transitions, 1638 flow [2023-01-28 07:00:39,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 128 transitions, 1433 flow, removed 67 selfloop flow, removed 22 redundant places. [2023-01-28 07:00:39,957 INFO L231 Difference]: Finished difference. Result has 97 places, 64 transitions, 725 flow [2023-01-28 07:00:39,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=725, PETRI_PLACES=97, PETRI_TRANSITIONS=64} [2023-01-28 07:00:39,957 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 62 predicate places. [2023-01-28 07:00:39,957 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 64 transitions, 725 flow [2023-01-28 07:00:39,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.72727272727273) internal successors, (899), 11 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 07:00:39,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:39,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:39,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 07:00:39,973 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:39,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1177964945, now seen corresponding path program 1 times [2023-01-28 07:00:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:39,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279087531] [2023-01-28 07:00:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:40,145 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 07:00:40,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:40,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279087531] [2023-01-28 07:00:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279087531] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:40,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:40,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:00:40,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705666621] [2023-01-28 07:00:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:40,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:40,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:40,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-01-28 07:00:40,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 64 transitions, 725 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 07:00:40,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:40,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-01-28 07:00:40,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:40,235 INFO L130 PetriNetUnfolder]: 135/281 cut-off events. [2023-01-28 07:00:40,235 INFO L131 PetriNetUnfolder]: For 2547/2551 co-relation queries the response was YES. [2023-01-28 07:00:40,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 281 events. 135/281 cut-off events. For 2547/2551 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1075 event pairs, 16 based on Foata normal form. 22/301 useless extension candidates. Maximal degree in co-relation 1630. Up to 119 conditions per place. [2023-01-28 07:00:40,236 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 84 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-01-28 07:00:40,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 97 transitions, 1322 flow [2023-01-28 07:00:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2023-01-28 07:00:40,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48383838383838385 [2023-01-28 07:00:40,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2023-01-28 07:00:40,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2023-01-28 07:00:40,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:40,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2023-01-28 07:00:40,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 07:00:40,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states 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 07:00:40,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states 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 07:00:40,254 INFO L175 Difference]: Start difference. First operand has 97 places, 64 transitions, 725 flow. Second operand 5 states and 479 transitions. [2023-01-28 07:00:40,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 97 transitions, 1322 flow [2023-01-28 07:00:40,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 988 flow, removed 82 selfloop flow, removed 22 redundant places. [2023-01-28 07:00:40,268 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 473 flow [2023-01-28 07:00:40,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-01-28 07:00:40,269 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 39 predicate places. [2023-01-28 07:00:40,269 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 473 flow [2023-01-28 07:00:40,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 07:00:40,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:40,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 07:00:40,270 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:40,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1782618140, now seen corresponding path program 1 times [2023-01-28 07:00:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735127228] [2023-01-28 07:00:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:40,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:41,396 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 07:00:41,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:41,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735127228] [2023-01-28 07:00:41,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735127228] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:41,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:41,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 07:00:41,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952591352] [2023-01-28 07:00:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:41,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 07:00:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:41,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 07:00:41,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-01-28 07:00:41,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-01-28 07:00:41,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 473 flow. Second operand has 12 states, 12 states have (on average 78.75) internal successors, (945), 12 states have internal predecessors, (945), 0 states have call successors, (0), 0 states 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 07:00:41,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:41,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-01-28 07:00:41,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:41,611 INFO L130 PetriNetUnfolder]: 148/313 cut-off events. [2023-01-28 07:00:41,612 INFO L131 PetriNetUnfolder]: For 1305/1305 co-relation queries the response was YES. [2023-01-28 07:00:41,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 313 events. 148/313 cut-off events. For 1305/1305 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1140 event pairs, 28 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1518. Up to 182 conditions per place. [2023-01-28 07:00:41,613 INFO L137 encePairwiseOnDemand]: 192/198 looper letters, 48 selfloop transitions, 11 changer transitions 26/86 dead transitions. [2023-01-28 07:00:41,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 828 flow [2023-01-28 07:00:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:00:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:00:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 589 transitions. [2023-01-28 07:00:41,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424963924963925 [2023-01-28 07:00:41,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 589 transitions. [2023-01-28 07:00:41,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 589 transitions. [2023-01-28 07:00:41,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:41,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 589 transitions. [2023-01-28 07:00:41,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.14285714285714) internal successors, (589), 7 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:41,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:41,616 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 07:00:41,617 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 473 flow. Second operand 7 states and 589 transitions. [2023-01-28 07:00:41,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 828 flow [2023-01-28 07:00:41,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 723 flow, removed 30 selfloop flow, removed 5 redundant places. [2023-01-28 07:00:41,620 INFO L231 Difference]: Finished difference. Result has 77 places, 48 transitions, 358 flow [2023-01-28 07:00:41,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=358, PETRI_PLACES=77, PETRI_TRANSITIONS=48} [2023-01-28 07:00:41,620 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 42 predicate places. [2023-01-28 07:00:41,621 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 48 transitions, 358 flow [2023-01-28 07:00:41,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.75) internal successors, (945), 12 states have internal predecessors, (945), 0 states have call successors, (0), 0 states 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 07:00:41,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:41,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:41,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 07:00:41,621 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:41,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:41,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1247472168, now seen corresponding path program 2 times [2023-01-28 07:00:41,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:41,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306693794] [2023-01-28 07:00:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:41,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:42,373 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 07:00:42,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:42,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306693794] [2023-01-28 07:00:42,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306693794] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:42,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:42,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 07:00:42,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5441307] [2023-01-28 07:00:42,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:42,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:00:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:00:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-28 07:00:42,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 198 [2023-01-28 07:00:42,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 48 transitions, 358 flow. Second operand has 10 states, 10 states have (on average 75.2) internal successors, (752), 10 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 07:00:42,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:42,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 198 [2023-01-28 07:00:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:42,643 INFO L130 PetriNetUnfolder]: 118/258 cut-off events. [2023-01-28 07:00:42,643 INFO L131 PetriNetUnfolder]: For 769/769 co-relation queries the response was YES. [2023-01-28 07:00:42,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 258 events. 118/258 cut-off events. For 769/769 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 935 event pairs, 19 based on Foata normal form. 1/259 useless extension candidates. Maximal degree in co-relation 1100. Up to 65 conditions per place. [2023-01-28 07:00:42,644 INFO L137 encePairwiseOnDemand]: 188/198 looper letters, 63 selfloop transitions, 17 changer transitions 16/96 dead transitions. [2023-01-28 07:00:42,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 96 transitions, 799 flow [2023-01-28 07:00:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 07:00:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 07:00:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 861 transitions. [2023-01-28 07:00:42,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953168044077135 [2023-01-28 07:00:42,646 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 861 transitions. [2023-01-28 07:00:42,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 861 transitions. [2023-01-28 07:00:42,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:42,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 861 transitions. [2023-01-28 07:00:42,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.27272727272727) internal successors, (861), 11 states have internal predecessors, (861), 0 states have call successors, (0), 0 states 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 07:00:42,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 07:00:42,648 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 07:00:42,648 INFO L175 Difference]: Start difference. First operand has 77 places, 48 transitions, 358 flow. Second operand 11 states and 861 transitions. [2023-01-28 07:00:42,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 96 transitions, 799 flow [2023-01-28 07:00:42,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 722 flow, removed 10 selfloop flow, removed 16 redundant places. [2023-01-28 07:00:42,651 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 309 flow [2023-01-28 07:00:42,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=309, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2023-01-28 07:00:42,651 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2023-01-28 07:00:42,651 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 309 flow [2023-01-28 07:00:42,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.2) internal successors, (752), 10 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 07:00:42,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:42,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:42,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 07:00:42,652 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:00:42,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:42,652 INFO L85 PathProgramCache]: Analyzing trace with hash -151216652, now seen corresponding path program 3 times [2023-01-28 07:00:42,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:42,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731282443] [2023-01-28 07:00:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:42,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:00:42,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:00:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:00:42,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:00:42,743 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:00:42,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 07:00:42,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-28 07:00:42,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-28 07:00:42,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-01-28 07:00:42,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-01-28 07:00:42,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-28 07:00:42,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 07:00:42,747 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:42,750 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:00:42,751 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:00:42,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:00:42 BasicIcfg [2023-01-28 07:00:42,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:00:42,810 INFO L158 Benchmark]: Toolchain (without parser) took 30454.41ms. Allocated memory was 377.5MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 345.8MB in the beginning and 679.4MB in the end (delta: -333.5MB). Peak memory consumption was 585.6MB. Max. memory is 16.0GB. [2023-01-28 07:00:42,810 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 214.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:00:42,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.15ms. Allocated memory is still 377.5MB. Free memory was 345.4MB in the beginning and 319.6MB in the end (delta: 25.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-28 07:00:42,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.57ms. Allocated memory is still 377.5MB. Free memory was 319.6MB in the beginning and 317.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:00:42,810 INFO L158 Benchmark]: Boogie Preprocessor took 48.46ms. Allocated memory is still 377.5MB. Free memory was 317.0MB in the beginning and 314.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:00:42,811 INFO L158 Benchmark]: RCFGBuilder took 606.14ms. Allocated memory is still 377.5MB. Free memory was 314.9MB in the beginning and 262.4MB in the end (delta: 52.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-01-28 07:00:42,811 INFO L158 Benchmark]: TraceAbstraction took 29220.13ms. Allocated memory was 377.5MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 261.9MB in the beginning and 679.4MB in the end (delta: -417.5MB). Peak memory consumption was 501.7MB. Max. memory is 16.0GB. [2023-01-28 07:00:42,811 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 255.9MB. Free memory is still 214.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 516.15ms. Allocated memory is still 377.5MB. Free memory was 345.4MB in the beginning and 319.6MB in the end (delta: 25.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.57ms. Allocated memory is still 377.5MB. Free memory was 319.6MB in the beginning and 317.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.46ms. Allocated memory is still 377.5MB. Free memory was 317.0MB in the beginning and 314.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 606.14ms. Allocated memory is still 377.5MB. Free memory was 314.9MB in the beginning and 262.4MB in the end (delta: 52.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * TraceAbstraction took 29220.13ms. Allocated memory was 377.5MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 261.9MB in the beginning and 679.4MB in the end (delta: -417.5MB). Peak memory consumption was 501.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 112 PlacesBefore, 35 PlacesAfterwards, 104 TransitionsBefore, 26 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 5019 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1714, independent: 1554, independent conditional: 0, independent unconditional: 1554, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 963, independent: 937, independent conditional: 0, independent unconditional: 937, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1714, independent: 617, independent conditional: 0, independent unconditional: 617, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 963, unknown conditional: 0, unknown unconditional: 963] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L720] 0 _Bool y$flush_delayed; [L721] 0 int y$mem_tmp; [L722] 0 _Bool y$r_buff0_thd0; [L723] 0 _Bool y$r_buff0_thd1; [L724] 0 _Bool y$r_buff0_thd2; [L725] 0 _Bool y$r_buff0_thd3; [L726] 0 _Bool y$r_buff1_thd0; [L727] 0 _Bool y$r_buff1_thd1; [L728] 0 _Bool y$r_buff1_thd2; [L729] 0 _Bool y$r_buff1_thd3; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1873; [L845] FCALL, FORK 0 pthread_create(&t1873, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1873, ((void *)0), P0, ((void *)0))=-2, t1873={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L846] 0 pthread_t t1874; [L847] FCALL, FORK 0 pthread_create(&t1874, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1874, ((void *)0), P1, ((void *)0))=-1, t1873={5:0}, t1874={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L848] 0 pthread_t t1875; [L849] FCALL, FORK 0 pthread_create(&t1875, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1875, ((void *)0), P2, ((void *)0))=0, t1873={5:0}, t1874={6:0}, t1875={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L741] 1 y$w_buff1 = y$w_buff0 [L742] 1 y$w_buff0 = 2 [L743] 1 y$w_buff1_used = y$w_buff0_used [L744] 1 y$w_buff0_used = (_Bool)1 [L745] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L745] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L746] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L747] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L748] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L749] 1 y$r_buff1_thd3 = y$r_buff0_thd3 [L750] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L770] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L773] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L776] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L777] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L778] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L779] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L780] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L790] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L791] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L792] 3 y$flush_delayed = weak$$choice2 [L793] 3 y$mem_tmp = y [L794] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L795] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L796] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L797] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L798] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L799] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L800] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L801] 3 __unbuffered_p2_EAX = y [L802] 3 y = y$flush_delayed ? y$mem_tmp : y [L803] 3 y$flush_delayed = (_Bool)0 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L806] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 3 y$flush_delayed = weak$$choice2 [L809] 3 y$mem_tmp = y [L810] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L811] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L812] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L813] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L814] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L815] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L816] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L817] 3 __unbuffered_p2_EBX = y [L818] 3 y = y$flush_delayed ? y$mem_tmp : y [L819] 3 y$flush_delayed = (_Bool)0 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L756] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L757] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L758] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L759] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L760] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L822] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L823] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L824] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L825] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L826] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L763] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L765] 1 return 0; [L829] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 3 return 0; [L851] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L853] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L853] RET 0 assume_abort_if_not(main$tmp_guard0) [L855] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L856] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L857] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L858] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L859] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1873={5:0}, t1874={6:0}, t1875={3:0}, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L862] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L863] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L864] 0 y$flush_delayed = weak$$choice2 [L865] 0 y$mem_tmp = y [L866] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L867] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L868] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L869] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L870] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L871] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L872] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L873] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 1) [L874] 0 y = y$flush_delayed ? y$mem_tmp : y [L875] 0 y$flush_delayed = (_Bool)0 [L877] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 845]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 134 locations, 6 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: 29.1s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1134 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1134 mSDsluCounter, 168 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 109 mSDsCounter, 499 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4117 IncrementalHoareTripleChecker+Invalid, 4616 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 499 mSolverCounterUnsat, 59 mSDtfsCounter, 4117 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1658occurred in iteration=15, InterpolantAutomatonStates: 191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 349 ConstructedInterpolants, 0 QuantifiedInterpolants, 5480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-01-28 07:00:42,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...