/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:45:36,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:45:36,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:45:36,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:45:36,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:45:36,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:45:36,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:45:36,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:45:36,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:45:36,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:45:36,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:45:36,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:45:36,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:45:36,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:45:36,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:45:36,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:45:36,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:45:36,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:45:36,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:45:36,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:45:36,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:45:36,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:45:36,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:45:36,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:45:36,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:45:36,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:45:36,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:45:36,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:45:36,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:45:36,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:45:36,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:45:36,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:45:36,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:45:36,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:45:36,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:45:36,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:45:36,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:45:36,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:45:36,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:45:36,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:45:36,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:45:36,765 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 02:45:36,789 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:45:36,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:45:36,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:45:36,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:45:36,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:45:36,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:45:36,791 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:45:36,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:45:36,791 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:45:36,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:45:36,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:45:36,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:45:36,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:45:36,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:45:36,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:45:36,792 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:45:36,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:45:36,792 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:45:36,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:45:36,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:45:36,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:45:36,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:45:36,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:45:36,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:45:36,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:45:36,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:45:36,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:45:36,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:45:36,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:45:36,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:45:36,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:45:36,794 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:45:37,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:45:37,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:45:37,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:45:37,049 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:45:37,050 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:45:37,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-01-28 02:45:38,195 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:45:38,384 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:45:38,385 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-01-28 02:45:38,392 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c86340c6/96034a6e7bee462bb5d7b813f9ab8158/FLAG2a31cd8ea [2023-01-28 02:45:38,408 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c86340c6/96034a6e7bee462bb5d7b813f9ab8158 [2023-01-28 02:45:38,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:45:38,411 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:45:38,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:45:38,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:45:38,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:45:38,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311c20da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38, skipping insertion in model container [2023-01-28 02:45:38,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:45:38,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:45:38,647 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2023-01-28 02:45:38,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:45:38,679 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:45:38,715 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2023-01-28 02:45:38,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:45:38,734 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:45:38,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38 WrapperNode [2023-01-28 02:45:38,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:45:38,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:45:38,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:45:38,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:45:38,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,800 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 294 [2023-01-28 02:45:38,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:45:38,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:45:38,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:45:38,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:45:38,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:45:38,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:45:38,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:45:38,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:45:38,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (1/1) ... [2023-01-28 02:45:38,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:45:38,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:45:38,890 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 02:45:38,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:45:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:45:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:45:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:45:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:45:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:45:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:45:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:45:38,935 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 02:45:39,021 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:45:39,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:45:39,452 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:45:39,463 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:45:39,464 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 02:45:39,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:45:39 BoogieIcfgContainer [2023-01-28 02:45:39,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:45:39,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:45:39,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:45:39,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:45:39,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:45:38" (1/3) ... [2023-01-28 02:45:39,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a53106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:45:39, skipping insertion in model container [2023-01-28 02:45:39,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:38" (2/3) ... [2023-01-28 02:45:39,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a53106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:45:39, skipping insertion in model container [2023-01-28 02:45:39,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:45:39" (3/3) ... [2023-01-28 02:45:39,473 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-01-28 02:45:39,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:45:39,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:45:39,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:45:39,615 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 02:45:39,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 343 transitions, 702 flow [2023-01-28 02:45:39,826 INFO L130 PetriNetUnfolder]: 28/341 cut-off events. [2023-01-28 02:45:39,827 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:45:39,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 341 events. 28/341 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 339 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 270. Up to 2 conditions per place. [2023-01-28 02:45:39,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 343 transitions, 702 flow [2023-01-28 02:45:39,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 333 transitions, 678 flow [2023-01-28 02:45:39,849 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:45:39,866 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 333 transitions, 678 flow [2023-01-28 02:45:39,869 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 333 transitions, 678 flow [2023-01-28 02:45:39,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 333 transitions, 678 flow [2023-01-28 02:45:39,922 INFO L130 PetriNetUnfolder]: 28/333 cut-off events. [2023-01-28 02:45:39,922 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:45:39,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 28/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 338 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 270. Up to 2 conditions per place. [2023-01-28 02:45:39,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 6048 [2023-01-28 02:45:51,131 INFO L134 LiptonReduction]: Checked pairs total: 6391 [2023-01-28 02:45:51,131 INFO L136 LiptonReduction]: Total number of compositions: 393 [2023-01-28 02:45:51,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:45:51,162 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;@771050b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:45:51,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 02:45:51,168 INFO L130 PetriNetUnfolder]: 5/24 cut-off events. [2023-01-28 02:45:51,168 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:45:51,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:51,169 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 02:45:51,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:51,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash 432883374, now seen corresponding path program 1 times [2023-01-28 02:45:51,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:51,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550415017] [2023-01-28 02:45:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:51,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:51,659 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 02:45:51,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:51,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550415017] [2023-01-28 02:45:51,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550415017] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:51,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:51,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:45:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352180728] [2023-01-28 02:45:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:51,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:45:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:45:51,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:45:51,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 736 [2023-01-28 02:45:51,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 02:45:51,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:51,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 736 [2023-01-28 02:45:51,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:51,793 INFO L130 PetriNetUnfolder]: 49/103 cut-off events. [2023-01-28 02:45:51,793 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 02:45:51,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 103 events. 49/103 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 182. Up to 103 conditions per place. [2023-01-28 02:45:51,798 INFO L137 encePairwiseOnDemand]: 733/736 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-01-28 02:45:51,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 116 flow [2023-01-28 02:45:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:45:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:45:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 915 transitions. [2023-01-28 02:45:51,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41440217391304346 [2023-01-28 02:45:51,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 915 transitions. [2023-01-28 02:45:51,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 915 transitions. [2023-01-28 02:45:51,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:51,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 915 transitions. [2023-01-28 02:45:51,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states 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 02:45:51,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states 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 02:45:51,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states 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 02:45:51,846 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 62 flow. Second operand 3 states and 915 transitions. [2023-01-28 02:45:51,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 116 flow [2023-01-28 02:45:51,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:45:51,852 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 66 flow [2023-01-28 02:45:51,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2023-01-28 02:45:51,858 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-01-28 02:45:51,859 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 66 flow [2023-01-28 02:45:51,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 02:45:51,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:51,860 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 02:45:51,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:45:51,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:51,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:51,861 INFO L85 PathProgramCache]: Analyzing trace with hash 855870377, now seen corresponding path program 1 times [2023-01-28 02:45:51,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:51,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344703795] [2023-01-28 02:45:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:51,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:45:52,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:52,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344703795] [2023-01-28 02:45:52,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344703795] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:52,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:52,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:45:52,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107055687] [2023-01-28 02:45:52,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:52,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:45:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:52,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:45:52,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:45:52,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 736 [2023-01-28 02:45:52,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 02:45:52,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:52,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 736 [2023-01-28 02:45:52,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:52,123 INFO L130 PetriNetUnfolder]: 49/104 cut-off events. [2023-01-28 02:45:52,123 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:45:52,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 49/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 214. Up to 102 conditions per place. [2023-01-28 02:45:52,124 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-28 02:45:52,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 122 flow [2023-01-28 02:45:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:45:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:45:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1164 transitions. [2023-01-28 02:45:52,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953804347826087 [2023-01-28 02:45:52,129 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1164 transitions. [2023-01-28 02:45:52,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1164 transitions. [2023-01-28 02:45:52,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:52,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1164 transitions. [2023-01-28 02:45:52,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 02:45:52,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states 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 02:45:52,138 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states 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 02:45:52,138 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 66 flow. Second operand 4 states and 1164 transitions. [2023-01-28 02:45:52,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 122 flow [2023-01-28 02:45:52,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 118 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:52,139 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 80 flow [2023-01-28 02:45:52,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-28 02:45:52,140 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-01-28 02:45:52,140 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 80 flow [2023-01-28 02:45:52,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 02:45:52,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:52,141 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 02:45:52,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:45:52,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:52,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1025184123, now seen corresponding path program 1 times [2023-01-28 02:45:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974842958] [2023-01-28 02:45:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:45:52,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974842958] [2023-01-28 02:45:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974842958] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:45:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461966821] [2023-01-28 02:45:52,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:52,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:45:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:45:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:45:52,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 736 [2023-01-28 02:45:52,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 02:45:52,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:52,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 736 [2023-01-28 02:45:52,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:52,347 INFO L130 PetriNetUnfolder]: 49/105 cut-off events. [2023-01-28 02:45:52,347 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:45:52,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 105 events. 49/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 214. Up to 104 conditions per place. [2023-01-28 02:45:52,348 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-01-28 02:45:52,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 138 flow [2023-01-28 02:45:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:45:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:45:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2023-01-28 02:45:52,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397758152173913 [2023-01-28 02:45:52,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2023-01-28 02:45:52,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2023-01-28 02:45:52,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:52,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2023-01-28 02:45:52,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 02:45:52,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states 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 02:45:52,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states 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 02:45:52,362 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 80 flow. Second operand 4 states and 1171 transitions. [2023-01-28 02:45:52,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 138 flow [2023-01-28 02:45:52,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:52,364 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 93 flow [2023-01-28 02:45:52,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-01-28 02:45:52,365 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 02:45:52,365 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 93 flow [2023-01-28 02:45:52,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 02:45:52,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:52,366 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] [2023-01-28 02:45:52,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 02:45:52,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:52,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2006272341, now seen corresponding path program 1 times [2023-01-28 02:45:52,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:52,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959327214] [2023-01-28 02:45:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:52,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:45:52,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:52,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959327214] [2023-01-28 02:45:52,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959327214] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:52,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:45:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448095830] [2023-01-28 02:45:52,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:45:52,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:52,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:45:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:45:52,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 736 [2023-01-28 02:45:52,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states 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 02:45:52,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:52,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 736 [2023-01-28 02:45:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:52,542 INFO L130 PetriNetUnfolder]: 49/106 cut-off events. [2023-01-28 02:45:52,542 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 02:45:52,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 106 events. 49/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 221. Up to 105 conditions per place. [2023-01-28 02:45:52,543 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 26 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-01-28 02:45:52,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 153 flow [2023-01-28 02:45:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:45:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:45:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2023-01-28 02:45:52,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397758152173913 [2023-01-28 02:45:52,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2023-01-28 02:45:52,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2023-01-28 02:45:52,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:52,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2023-01-28 02:45:52,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 02:45:52,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states 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 02:45:52,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states 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 02:45:52,557 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 93 flow. Second operand 4 states and 1171 transitions. [2023-01-28 02:45:52,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 153 flow [2023-01-28 02:45:52,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 147 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:52,559 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 101 flow [2023-01-28 02:45:52,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-01-28 02:45:52,559 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-01-28 02:45:52,560 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 101 flow [2023-01-28 02:45:52,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states 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 02:45:52,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:52,561 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 02:45:52,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:45:52,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:52,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1187833151, now seen corresponding path program 1 times [2023-01-28 02:45:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:52,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474760852] [2023-01-28 02:45:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:52,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:45:53,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:53,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474760852] [2023-01-28 02:45:53,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474760852] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:53,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:53,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:45:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975910230] [2023-01-28 02:45:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:53,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:45:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:45:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:45:53,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-28 02:45:53,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 101 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 02:45:53,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:53,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-28 02:45:53,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:54,302 INFO L130 PetriNetUnfolder]: 83/192 cut-off events. [2023-01-28 02:45:54,302 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 02:45:54,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 192 events. 83/192 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 724 event pairs, 8 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 402. Up to 84 conditions per place. [2023-01-28 02:45:54,304 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 50 selfloop transitions, 14 changer transitions 5/69 dead transitions. [2023-01-28 02:45:54,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 330 flow [2023-01-28 02:45:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:45:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:45:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2516 transitions. [2023-01-28 02:45:54,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3418478260869565 [2023-01-28 02:45:54,311 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2516 transitions. [2023-01-28 02:45:54,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2516 transitions. [2023-01-28 02:45:54,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:54,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2516 transitions. [2023-01-28 02:45:54,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.6) internal successors, (2516), 10 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states 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 02:45:54,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states 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 02:45:54,328 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states 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 02:45:54,328 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 101 flow. Second operand 10 states and 2516 transitions. [2023-01-28 02:45:54,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 330 flow [2023-01-28 02:45:54,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 324 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:54,330 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 177 flow [2023-01-28 02:45:54,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=177, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-01-28 02:45:54,331 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 02:45:54,331 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 177 flow [2023-01-28 02:45:54,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 02:45:54,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:54,332 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 02:45:54,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 02:45:54,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:54,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1223626605, now seen corresponding path program 2 times [2023-01-28 02:45:54,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:54,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942914619] [2023-01-28 02:45:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:54,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:45:55,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:55,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942914619] [2023-01-28 02:45:55,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942914619] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:55,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:55,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 02:45:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57662911] [2023-01-28 02:45:55,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:55,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:55,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-28 02:45:55,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 02:45:55,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:55,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-28 02:45:55,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:56,393 INFO L130 PetriNetUnfolder]: 88/215 cut-off events. [2023-01-28 02:45:56,393 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-01-28 02:45:56,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 215 events. 88/215 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 826 event pairs, 16 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 634. Up to 88 conditions per place. [2023-01-28 02:45:56,395 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 53 selfloop transitions, 18 changer transitions 5/76 dead transitions. [2023-01-28 02:45:56,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 460 flow [2023-01-28 02:45:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:45:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:45:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2355 transitions. [2023-01-28 02:45:56,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3555253623188406 [2023-01-28 02:45:56,401 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2355 transitions. [2023-01-28 02:45:56,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2355 transitions. [2023-01-28 02:45:56,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:56,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2355 transitions. [2023-01-28 02:45:56,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 261.6666666666667) internal successors, (2355), 9 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states 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 02:45:56,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:45:56,415 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:45:56,415 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 177 flow. Second operand 9 states and 2355 transitions. [2023-01-28 02:45:56,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 460 flow [2023-01-28 02:45:56,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 453 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 02:45:56,419 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 297 flow [2023-01-28 02:45:56,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-01-28 02:45:56,420 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-01-28 02:45:56,420 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 297 flow [2023-01-28 02:45:56,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 02:45:56,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:56,421 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 02:45:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:45:56,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:56,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash -12608099, now seen corresponding path program 3 times [2023-01-28 02:45:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525363791] [2023-01-28 02:45:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:45:57,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:57,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525363791] [2023-01-28 02:45:57,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525363791] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:57,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:57,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 02:45:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634966142] [2023-01-28 02:45:57,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:57,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:57,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:57,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-28 02:45:57,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 02:45:57,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:57,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-28 02:45:57,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:57,642 INFO L130 PetriNetUnfolder]: 127/319 cut-off events. [2023-01-28 02:45:57,642 INFO L131 PetriNetUnfolder]: For 551/551 co-relation queries the response was YES. [2023-01-28 02:45:57,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 319 events. 127/319 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1479 event pairs, 49 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1104. Up to 160 conditions per place. [2023-01-28 02:45:57,644 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 50 selfloop transitions, 31 changer transitions 5/86 dead transitions. [2023-01-28 02:45:57,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 643 flow [2023-01-28 02:45:57,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:45:57,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:45:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2102 transitions. [2023-01-28 02:45:57,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569972826086957 [2023-01-28 02:45:57,650 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2102 transitions. [2023-01-28 02:45:57,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2102 transitions. [2023-01-28 02:45:57,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:57,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2102 transitions. [2023-01-28 02:45:57,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 262.75) internal successors, (2102), 8 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states 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 02:45:57,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states 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 02:45:57,676 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states 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 02:45:57,676 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 297 flow. Second operand 8 states and 2102 transitions. [2023-01-28 02:45:57,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 643 flow [2023-01-28 02:45:57,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 629 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:57,682 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 482 flow [2023-01-28 02:45:57,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-01-28 02:45:57,683 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2023-01-28 02:45:57,683 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 482 flow [2023-01-28 02:45:57,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 02:45:57,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:57,684 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 02:45:57,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 02:45:57,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:57,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1226252381, now seen corresponding path program 4 times [2023-01-28 02:45:57,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:57,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263315340] [2023-01-28 02:45:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:57,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:45:58,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:58,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263315340] [2023-01-28 02:45:58,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263315340] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:58,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:58,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 02:45:58,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507280780] [2023-01-28 02:45:58,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:58,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:58,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:58,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 736 [2023-01-28 02:45:58,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states 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 02:45:58,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:58,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 736 [2023-01-28 02:45:58,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:58,936 INFO L130 PetriNetUnfolder]: 126/320 cut-off events. [2023-01-28 02:45:58,937 INFO L131 PetriNetUnfolder]: For 769/769 co-relation queries the response was YES. [2023-01-28 02:45:58,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 320 events. 126/320 cut-off events. For 769/769 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1513 event pairs, 37 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1258. Up to 178 conditions per place. [2023-01-28 02:45:58,940 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 77 selfloop transitions, 12 changer transitions 5/94 dead transitions. [2023-01-28 02:45:58,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 809 flow [2023-01-28 02:45:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1927 transitions. [2023-01-28 02:45:58,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3740295031055901 [2023-01-28 02:45:58,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1927 transitions. [2023-01-28 02:45:58,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1927 transitions. [2023-01-28 02:45:58,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:58,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1927 transitions. [2023-01-28 02:45:58,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.2857142857143) internal successors, (1927), 7 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states 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 02:45:58,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states 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 02:45:58,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states 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 02:45:58,957 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 482 flow. Second operand 7 states and 1927 transitions. [2023-01-28 02:45:58,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 809 flow [2023-01-28 02:45:58,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 791 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:58,965 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 565 flow [2023-01-28 02:45:58,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=565, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2023-01-28 02:45:58,967 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 46 predicate places. [2023-01-28 02:45:58,967 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 565 flow [2023-01-28 02:45:58,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states 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 02:45:58,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:58,968 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 02:45:58,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 02:45:58,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:45:58,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:58,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1088873191, now seen corresponding path program 5 times [2023-01-28 02:45:58,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:58,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569589607] [2023-01-28 02:45:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:58,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:45:59,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:59,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569589607] [2023-01-28 02:45:59,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569589607] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:59,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:59,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 02:45:59,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985698438] [2023-01-28 02:45:59,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:59,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:59,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:59,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:59,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:59,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-28 02:45:59,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 565 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 02:45:59,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:59,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-28 02:45:59,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:00,085 INFO L130 PetriNetUnfolder]: 125/313 cut-off events. [2023-01-28 02:46:00,085 INFO L131 PetriNetUnfolder]: For 1118/1118 co-relation queries the response was YES. [2023-01-28 02:46:00,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 313 events. 125/313 cut-off events. For 1118/1118 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1432 event pairs, 53 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1333. Up to 178 conditions per place. [2023-01-28 02:46:00,088 INFO L137 encePairwiseOnDemand]: 728/736 looper letters, 61 selfloop transitions, 19 changer transitions 9/89 dead transitions. [2023-01-28 02:46:00,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 833 flow [2023-01-28 02:46:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1843 transitions. [2023-01-28 02:46:00,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577251552795031 [2023-01-28 02:46:00,093 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1843 transitions. [2023-01-28 02:46:00,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1843 transitions. [2023-01-28 02:46:00,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:00,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1843 transitions. [2023-01-28 02:46:00,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.2857142857143) internal successors, (1843), 7 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states 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 02:46:00,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states 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 02:46:00,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states 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 02:46:00,104 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 565 flow. Second operand 7 states and 1843 transitions. [2023-01-28 02:46:00,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 833 flow [2023-01-28 02:46:00,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 89 transitions, 818 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:00,111 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 639 flow [2023-01-28 02:46:00,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=639, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2023-01-28 02:46:00,112 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 52 predicate places. [2023-01-28 02:46:00,112 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 639 flow [2023-01-28 02:46:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 02:46:00,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:00,113 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 02:46:00,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 02:46:00,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:00,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash 73416431, now seen corresponding path program 6 times [2023-01-28 02:46:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:00,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601635025] [2023-01-28 02:46:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:00,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:01,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:01,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601635025] [2023-01-28 02:46:01,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601635025] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:01,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:01,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:46:01,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514481285] [2023-01-28 02:46:01,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:01,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:46:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:46:01,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:46:01,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-28 02:46:01,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 02:46:01,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:01,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-28 02:46:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:01,603 INFO L130 PetriNetUnfolder]: 126/320 cut-off events. [2023-01-28 02:46:01,603 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2023-01-28 02:46:01,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 320 events. 126/320 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1502 event pairs, 15 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1425. Up to 120 conditions per place. [2023-01-28 02:46:01,606 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 57 selfloop transitions, 33 changer transitions 5/95 dead transitions. [2023-01-28 02:46:01,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 948 flow [2023-01-28 02:46:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:46:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:46:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2507 transitions. [2023-01-28 02:46:01,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2023-01-28 02:46:01,613 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2507 transitions. [2023-01-28 02:46:01,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2507 transitions. [2023-01-28 02:46:01,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:01,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2507 transitions. [2023-01-28 02:46:01,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.7) internal successors, (2507), 10 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states 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 02:46:01,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states 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 02:46:01,627 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states 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 02:46:01,627 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 639 flow. Second operand 10 states and 2507 transitions. [2023-01-28 02:46:01,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 948 flow [2023-01-28 02:46:01,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 915 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:01,637 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 779 flow [2023-01-28 02:46:01,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=779, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2023-01-28 02:46:01,638 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 62 predicate places. [2023-01-28 02:46:01,638 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 779 flow [2023-01-28 02:46:01,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 02:46:01,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:01,639 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 02:46:01,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 02:46:01,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:01,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:01,640 INFO L85 PathProgramCache]: Analyzing trace with hash 328223971, now seen corresponding path program 7 times [2023-01-28 02:46:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:01,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655850389] [2023-01-28 02:46:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:01,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:02,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:02,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655850389] [2023-01-28 02:46:02,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655850389] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:02,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:02,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:46:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711270277] [2023-01-28 02:46:02,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:02,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:46:02,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:46:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:46:02,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-28 02:46:02,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 779 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 02:46:02,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:02,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-28 02:46:02,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:02,954 INFO L130 PetriNetUnfolder]: 125/313 cut-off events. [2023-01-28 02:46:02,954 INFO L131 PetriNetUnfolder]: For 1813/1813 co-relation queries the response was YES. [2023-01-28 02:46:02,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 313 events. 125/313 cut-off events. For 1813/1813 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1428 event pairs, 41 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1561. Up to 212 conditions per place. [2023-01-28 02:46:02,957 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 44 selfloop transitions, 39 changer transitions 5/88 dead transitions. [2023-01-28 02:46:02,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 88 transitions, 1019 flow [2023-01-28 02:46:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2254 transitions. [2023-01-28 02:46:02,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2023-01-28 02:46:02,963 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2254 transitions. [2023-01-28 02:46:02,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2254 transitions. [2023-01-28 02:46:02,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:02,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2254 transitions. [2023-01-28 02:46:02,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.44444444444446) internal successors, (2254), 9 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states 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 02:46:02,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:02,976 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:02,977 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 779 flow. Second operand 9 states and 2254 transitions. [2023-01-28 02:46:02,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 88 transitions, 1019 flow [2023-01-28 02:46:03,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 1001 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 02:46:03,035 INFO L231 Difference]: Finished difference. Result has 94 places, 75 transitions, 905 flow [2023-01-28 02:46:03,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=905, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2023-01-28 02:46:03,036 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 67 predicate places. [2023-01-28 02:46:03,036 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 905 flow [2023-01-28 02:46:03,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 02:46:03,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:03,037 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 02:46:03,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 02:46:03,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:03,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1402950657, now seen corresponding path program 8 times [2023-01-28 02:46:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148587892] [2023-01-28 02:46:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:03,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148587892] [2023-01-28 02:46:03,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148587892] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:03,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:03,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:46:03,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326731761] [2023-01-28 02:46:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:03,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:46:03,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:03,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:46:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:46:03,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-28 02:46:03,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 905 flow. Second operand has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states 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 02:46:03,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:03,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-28 02:46:03,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:04,500 INFO L130 PetriNetUnfolder]: 149/375 cut-off events. [2023-01-28 02:46:04,500 INFO L131 PetriNetUnfolder]: For 2815/2815 co-relation queries the response was YES. [2023-01-28 02:46:04,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 375 events. 149/375 cut-off events. For 2815/2815 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1891 event pairs, 11 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 2009. Up to 122 conditions per place. [2023-01-28 02:46:04,504 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 59 selfloop transitions, 46 changer transitions 5/110 dead transitions. [2023-01-28 02:46:04,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 1344 flow [2023-01-28 02:46:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2216 transitions. [2023-01-28 02:46:04,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33454106280193235 [2023-01-28 02:46:04,512 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2216 transitions. [2023-01-28 02:46:04,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2216 transitions. [2023-01-28 02:46:04,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:04,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2216 transitions. [2023-01-28 02:46:04,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.22222222222223) internal successors, (2216), 9 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states 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 02:46:04,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:04,524 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:04,524 INFO L175 Difference]: Start difference. First operand has 94 places, 75 transitions, 905 flow. Second operand 9 states and 2216 transitions. [2023-01-28 02:46:04,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 1344 flow [2023-01-28 02:46:04,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 1287 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 02:46:04,539 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 1121 flow [2023-01-28 02:46:04,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2023-01-28 02:46:04,540 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2023-01-28 02:46:04,540 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 1121 flow [2023-01-28 02:46:04,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states 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 02:46:04,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:04,541 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 02:46:04,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 02:46:04,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:04,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1906425293, now seen corresponding path program 9 times [2023-01-28 02:46:04,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:04,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734522320] [2023-01-28 02:46:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:04,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:05,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:05,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734522320] [2023-01-28 02:46:05,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734522320] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:05,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:05,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:46:05,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186865192] [2023-01-28 02:46:05,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:05,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:46:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:46:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:46:05,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-28 02:46:05,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 02:46:05,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:05,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-28 02:46:05,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:05,774 INFO L130 PetriNetUnfolder]: 148/368 cut-off events. [2023-01-28 02:46:05,775 INFO L131 PetriNetUnfolder]: For 3810/3810 co-relation queries the response was YES. [2023-01-28 02:46:05,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 368 events. 148/368 cut-off events. For 3810/3810 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1830 event pairs, 38 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 2174. Up to 196 conditions per place. [2023-01-28 02:46:05,778 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 62 selfloop transitions, 28 changer transitions 10/100 dead transitions. [2023-01-28 02:46:05,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 1391 flow [2023-01-28 02:46:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2258 transitions. [2023-01-28 02:46:05,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408816425120773 [2023-01-28 02:46:05,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2258 transitions. [2023-01-28 02:46:05,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2258 transitions. [2023-01-28 02:46:05,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:05,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2258 transitions. [2023-01-28 02:46:05,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.88888888888889) internal successors, (2258), 9 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states 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 02:46:05,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:05,795 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:05,796 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 1121 flow. Second operand 9 states and 2258 transitions. [2023-01-28 02:46:05,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 1391 flow [2023-01-28 02:46:05,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 100 transitions, 1368 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-28 02:46:05,817 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 1179 flow [2023-01-28 02:46:05,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1179, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2023-01-28 02:46:05,818 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2023-01-28 02:46:05,818 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 1179 flow [2023-01-28 02:46:05,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 02:46:05,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:05,819 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 02:46:05,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 02:46:05,819 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:05,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1423168621, now seen corresponding path program 10 times [2023-01-28 02:46:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:05,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655612917] [2023-01-28 02:46:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:06,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:06,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655612917] [2023-01-28 02:46:06,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655612917] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:06,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:06,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:46:06,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86838415] [2023-01-28 02:46:06,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:06,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:46:06,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:06,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:46:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:46:06,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-28 02:46:06,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 1179 flow. Second operand has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states 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 02:46:06,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:06,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-28 02:46:06,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:07,191 INFO L130 PetriNetUnfolder]: 143/352 cut-off events. [2023-01-28 02:46:07,192 INFO L131 PetriNetUnfolder]: For 3798/3798 co-relation queries the response was YES. [2023-01-28 02:46:07,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 352 events. 143/352 cut-off events. For 3798/3798 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1696 event pairs, 40 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 2169. Up to 229 conditions per place. [2023-01-28 02:46:07,195 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 48 selfloop transitions, 45 changer transitions 5/98 dead transitions. [2023-01-28 02:46:07,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 1445 flow [2023-01-28 02:46:07,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:46:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:46:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1960 transitions. [2023-01-28 02:46:07,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3328804347826087 [2023-01-28 02:46:07,201 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1960 transitions. [2023-01-28 02:46:07,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1960 transitions. [2023-01-28 02:46:07,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:07,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1960 transitions. [2023-01-28 02:46:07,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:07,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states 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 02:46:07,214 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states 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 02:46:07,215 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 1179 flow. Second operand 8 states and 1960 transitions. [2023-01-28 02:46:07,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 1445 flow [2023-01-28 02:46:07,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 1375 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-28 02:46:07,235 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 1276 flow [2023-01-28 02:46:07,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1276, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2023-01-28 02:46:07,236 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2023-01-28 02:46:07,236 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 1276 flow [2023-01-28 02:46:07,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states 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 02:46:07,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:07,237 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 02:46:07,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 02:46:07,238 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:07,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:07,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1807068179, now seen corresponding path program 11 times [2023-01-28 02:46:07,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529595853] [2023-01-28 02:46:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:07,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:08,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529595853] [2023-01-28 02:46:08,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529595853] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:08,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:08,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:46:08,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746447153] [2023-01-28 02:46:08,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:08,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:46:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:08,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:46:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:46:08,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 736 [2023-01-28 02:46:08,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 1276 flow. Second operand has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states 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 02:46:08,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:08,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 736 [2023-01-28 02:46:08,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:08,626 INFO L130 PetriNetUnfolder]: 143/362 cut-off events. [2023-01-28 02:46:08,626 INFO L131 PetriNetUnfolder]: For 4462/4462 co-relation queries the response was YES. [2023-01-28 02:46:08,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2364 conditions, 362 events. 143/362 cut-off events. For 4462/4462 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1787 event pairs, 22 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 2310. Up to 246 conditions per place. [2023-01-28 02:46:08,629 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 79 selfloop transitions, 18 changer transitions 9/106 dead transitions. [2023-01-28 02:46:08,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 1614 flow [2023-01-28 02:46:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:46:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:46:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2050 transitions. [2023-01-28 02:46:08,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34816576086956524 [2023-01-28 02:46:08,633 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2050 transitions. [2023-01-28 02:46:08,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2050 transitions. [2023-01-28 02:46:08,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:08,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2050 transitions. [2023-01-28 02:46:08,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 256.25) internal successors, (2050), 8 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states 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 02:46:08,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states 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 02:46:08,642 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states 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 02:46:08,642 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 1276 flow. Second operand 8 states and 2050 transitions. [2023-01-28 02:46:08,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 1614 flow [2023-01-28 02:46:08,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 1513 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-28 02:46:08,663 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 1194 flow [2023-01-28 02:46:08,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2023-01-28 02:46:08,663 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 80 predicate places. [2023-01-28 02:46:08,663 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 1194 flow [2023-01-28 02:46:08,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states 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 02:46:08,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:08,664 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 02:46:08,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 02:46:08,665 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:08,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1455020015, now seen corresponding path program 12 times [2023-01-28 02:46:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:08,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500269582] [2023-01-28 02:46:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:08,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:09,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500269582] [2023-01-28 02:46:09,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500269582] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:09,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:09,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:46:09,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694384384] [2023-01-28 02:46:09,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:09,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:46:09,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:09,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:46:09,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:46:09,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 736 [2023-01-28 02:46:09,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 1194 flow. Second operand has 12 states, 12 states have (on average 234.83333333333334) internal successors, (2818), 12 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states 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 02:46:09,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:09,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 736 [2023-01-28 02:46:09,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:10,213 INFO L130 PetriNetUnfolder]: 134/336 cut-off events. [2023-01-28 02:46:10,213 INFO L131 PetriNetUnfolder]: For 3865/3865 co-relation queries the response was YES. [2023-01-28 02:46:10,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 336 events. 134/336 cut-off events. For 3865/3865 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1582 event pairs, 13 based on Foata normal form. 1/336 useless extension candidates. Maximal degree in co-relation 2100. Up to 94 conditions per place. [2023-01-28 02:46:10,216 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 46 selfloop transitions, 47 changer transitions 8/101 dead transitions. [2023-01-28 02:46:10,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 1475 flow [2023-01-28 02:46:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2149 transitions. [2023-01-28 02:46:10,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3244263285024155 [2023-01-28 02:46:10,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2149 transitions. [2023-01-28 02:46:10,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2149 transitions. [2023-01-28 02:46:10,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:10,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2149 transitions. [2023-01-28 02:46:10,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 238.77777777777777) internal successors, (2149), 9 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states 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 02:46:10,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:10,249 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:10,249 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 1194 flow. Second operand 9 states and 2149 transitions. [2023-01-28 02:46:10,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 1475 flow [2023-01-28 02:46:10,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 101 transitions, 1378 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-01-28 02:46:10,269 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 1234 flow [2023-01-28 02:46:10,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2023-01-28 02:46:10,269 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 77 predicate places. [2023-01-28 02:46:10,270 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 1234 flow [2023-01-28 02:46:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 234.83333333333334) internal successors, (2818), 12 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states 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 02:46:10,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:10,271 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, 1, 1] [2023-01-28 02:46:10,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 02:46:10,271 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:10,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1783573119, now seen corresponding path program 1 times [2023-01-28 02:46:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:10,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349867062] [2023-01-28 02:46:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:10,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349867062] [2023-01-28 02:46:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349867062] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:10,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:10,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 02:46:10,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137393065] [2023-01-28 02:46:10,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:10,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:10,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:10,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:10,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:10,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 736 [2023-01-28 02:46:10,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states 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 02:46:10,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:10,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 736 [2023-01-28 02:46:10,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:11,160 INFO L130 PetriNetUnfolder]: 129/337 cut-off events. [2023-01-28 02:46:11,160 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2023-01-28 02:46:11,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 337 events. 129/337 cut-off events. For 4233/4233 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1625 event pairs, 27 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 2151. Up to 128 conditions per place. [2023-01-28 02:46:11,163 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 65 selfloop transitions, 34 changer transitions 9/108 dead transitions. [2023-01-28 02:46:11,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 1624 flow [2023-01-28 02:46:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1879 transitions. [2023-01-28 02:46:11,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36471273291925466 [2023-01-28 02:46:11,167 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1879 transitions. [2023-01-28 02:46:11,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1879 transitions. [2023-01-28 02:46:11,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:11,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1879 transitions. [2023-01-28 02:46:11,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.42857142857144) internal successors, (1879), 7 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states 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 02:46:11,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states 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 02:46:11,174 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states 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 02:46:11,175 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 1234 flow. Second operand 7 states and 1879 transitions. [2023-01-28 02:46:11,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 1624 flow [2023-01-28 02:46:11,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 1500 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-01-28 02:46:11,190 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 1209 flow [2023-01-28 02:46:11,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1209, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2023-01-28 02:46:11,191 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 73 predicate places. [2023-01-28 02:46:11,191 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 1209 flow [2023-01-28 02:46:11,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states 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 02:46:11,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:11,192 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, 1, 1] [2023-01-28 02:46:11,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 02:46:11,192 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:11,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash -75835145, now seen corresponding path program 2 times [2023-01-28 02:46:11,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:11,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908687259] [2023-01-28 02:46:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:11,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:11,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:11,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908687259] [2023-01-28 02:46:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908687259] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:11,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:11,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:46:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594561874] [2023-01-28 02:46:11,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:11,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:46:11,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:46:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:46:11,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 736 [2023-01-28 02:46:11,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 1209 flow. Second operand has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 02:46:11,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:11,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 736 [2023-01-28 02:46:11,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:11,937 INFO L130 PetriNetUnfolder]: 116/326 cut-off events. [2023-01-28 02:46:11,938 INFO L131 PetriNetUnfolder]: For 3199/3199 co-relation queries the response was YES. [2023-01-28 02:46:11,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 326 events. 116/326 cut-off events. For 3199/3199 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1605 event pairs, 66 based on Foata normal form. 3/328 useless extension candidates. Maximal degree in co-relation 2005. Up to 248 conditions per place. [2023-01-28 02:46:11,941 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 58 selfloop transitions, 20 changer transitions 15/93 dead transitions. [2023-01-28 02:46:11,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 1419 flow [2023-01-28 02:46:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:46:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:46:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1396 transitions. [2023-01-28 02:46:11,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793478260869565 [2023-01-28 02:46:11,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1396 transitions. [2023-01-28 02:46:11,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1396 transitions. [2023-01-28 02:46:11,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:11,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1396 transitions. [2023-01-28 02:46:11,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.2) internal successors, (1396), 5 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states 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 02:46:11,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states 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 02:46:11,957 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states 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 02:46:11,957 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 1209 flow. Second operand 5 states and 1396 transitions. [2023-01-28 02:46:11,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 1419 flow [2023-01-28 02:46:11,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 1404 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:11,973 INFO L231 Difference]: Finished difference. Result has 103 places, 76 transitions, 1090 flow [2023-01-28 02:46:11,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1090, PETRI_PLACES=103, PETRI_TRANSITIONS=76} [2023-01-28 02:46:11,974 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 76 predicate places. [2023-01-28 02:46:11,974 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 76 transitions, 1090 flow [2023-01-28 02:46:11,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 02:46:11,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:11,975 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, 1, 1] [2023-01-28 02:46:11,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 02:46:11,975 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:11,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1032254093, now seen corresponding path program 3 times [2023-01-28 02:46:11,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:11,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189562683] [2023-01-28 02:46:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:11,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:12,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:12,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189562683] [2023-01-28 02:46:12,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189562683] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:12,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:12,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:46:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300045978] [2023-01-28 02:46:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:12,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:46:12,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:46:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:46:12,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 736 [2023-01-28 02:46:12,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 76 transitions, 1090 flow. Second operand has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 02:46:12,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:12,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 736 [2023-01-28 02:46:12,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:12,768 INFO L130 PetriNetUnfolder]: 102/284 cut-off events. [2023-01-28 02:46:12,769 INFO L131 PetriNetUnfolder]: For 2940/2940 co-relation queries the response was YES. [2023-01-28 02:46:12,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 284 events. 102/284 cut-off events. For 2940/2940 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1343 event pairs, 26 based on Foata normal form. 5/288 useless extension candidates. Maximal degree in co-relation 1819. Up to 115 conditions per place. [2023-01-28 02:46:12,771 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 38 selfloop transitions, 2 changer transitions 46/86 dead transitions. [2023-01-28 02:46:12,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 1290 flow [2023-01-28 02:46:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:46:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:46:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1400 transitions. [2023-01-28 02:46:12,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2023-01-28 02:46:12,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1400 transitions. [2023-01-28 02:46:12,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1400 transitions. [2023-01-28 02:46:12,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:12,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1400 transitions. [2023-01-28 02:46:12,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 02:46:12,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states 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 02:46:12,780 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states 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 02:46:12,780 INFO L175 Difference]: Start difference. First operand has 103 places, 76 transitions, 1090 flow. Second operand 5 states and 1400 transitions. [2023-01-28 02:46:12,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 1290 flow [2023-01-28 02:46:12,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 1225 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-28 02:46:12,792 INFO L231 Difference]: Finished difference. Result has 99 places, 37 transitions, 343 flow [2023-01-28 02:46:12,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=99, PETRI_TRANSITIONS=37} [2023-01-28 02:46:12,793 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2023-01-28 02:46:12,793 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 37 transitions, 343 flow [2023-01-28 02:46:12,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 02:46:12,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:12,794 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, 1, 1] [2023-01-28 02:46:12,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 02:46:12,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:12,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash -461531297, now seen corresponding path program 4 times [2023-01-28 02:46:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:12,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149747587] [2023-01-28 02:46:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:12,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:13,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:13,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149747587] [2023-01-28 02:46:13,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149747587] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:13,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:13,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 02:46:13,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620657716] [2023-01-28 02:46:13,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:13,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:46:13,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:13,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:46:13,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:46:13,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-28 02:46:13,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 37 transitions, 343 flow. Second operand has 14 states, 14 states have (on average 240.71428571428572) internal successors, (3370), 14 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states 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 02:46:13,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:13,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-28 02:46:13,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:14,344 INFO L130 PetriNetUnfolder]: 26/87 cut-off events. [2023-01-28 02:46:14,345 INFO L131 PetriNetUnfolder]: For 917/917 co-relation queries the response was YES. [2023-01-28 02:46:14,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 87 events. 26/87 cut-off events. For 917/917 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 209 event pairs, 6 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 469. Up to 26 conditions per place. [2023-01-28 02:46:14,346 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 30 selfloop transitions, 8 changer transitions 16/54 dead transitions. [2023-01-28 02:46:14,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 54 transitions, 551 flow [2023-01-28 02:46:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2196 transitions. [2023-01-28 02:46:14,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33152173913043476 [2023-01-28 02:46:14,350 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2196 transitions. [2023-01-28 02:46:14,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2196 transitions. [2023-01-28 02:46:14,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:14,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2196 transitions. [2023-01-28 02:46:14,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 02:46:14,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:14,360 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:14,360 INFO L175 Difference]: Start difference. First operand has 99 places, 37 transitions, 343 flow. Second operand 9 states and 2196 transitions. [2023-01-28 02:46:14,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 54 transitions, 551 flow [2023-01-28 02:46:14,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 347 flow, removed 27 selfloop flow, removed 39 redundant places. [2023-01-28 02:46:14,364 INFO L231 Difference]: Finished difference. Result has 57 places, 31 transitions, 166 flow [2023-01-28 02:46:14,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=31} [2023-01-28 02:46:14,364 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-01-28 02:46:14,364 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 31 transitions, 166 flow [2023-01-28 02:46:14,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 240.71428571428572) internal successors, (3370), 14 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states 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 02:46:14,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:14,366 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, 1, 1] [2023-01-28 02:46:14,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 02:46:14,366 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:14,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash 481613323, now seen corresponding path program 5 times [2023-01-28 02:46:14,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:14,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507975148] [2023-01-28 02:46:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:14,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:15,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507975148] [2023-01-28 02:46:15,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507975148] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:15,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:15,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:46:15,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021264859] [2023-01-28 02:46:15,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:15,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:46:15,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:46:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:46:15,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-28 02:46:15,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 31 transitions, 166 flow. Second operand has 13 states, 13 states have (on average 240.84615384615384) internal successors, (3131), 13 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states 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 02:46:15,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:15,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-28 02:46:15,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:15,608 INFO L130 PetriNetUnfolder]: 9/46 cut-off events. [2023-01-28 02:46:15,608 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-28 02:46:15,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 46 events. 9/46 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 3 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 171. Up to 16 conditions per place. [2023-01-28 02:46:15,609 INFO L137 encePairwiseOnDemand]: 728/736 looper letters, 22 selfloop transitions, 6 changer transitions 10/38 dead transitions. [2023-01-28 02:46:15,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 38 transitions, 259 flow [2023-01-28 02:46:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2186 transitions. [2023-01-28 02:46:15,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.330012077294686 [2023-01-28 02:46:15,613 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2186 transitions. [2023-01-28 02:46:15,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2186 transitions. [2023-01-28 02:46:15,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:15,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2186 transitions. [2023-01-28 02:46:15,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 242.88888888888889) internal successors, (2186), 9 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states 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 02:46:15,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:15,624 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 02:46:15,624 INFO L175 Difference]: Start difference. First operand has 57 places, 31 transitions, 166 flow. Second operand 9 states and 2186 transitions. [2023-01-28 02:46:15,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 38 transitions, 259 flow [2023-01-28 02:46:15,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 218 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-01-28 02:46:15,626 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 121 flow [2023-01-28 02:46:15,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-01-28 02:46:15,626 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-01-28 02:46:15,626 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 121 flow [2023-01-28 02:46:15,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.84615384615384) internal successors, (3131), 13 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states 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 02:46:15,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:15,627 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, 1, 1] [2023-01-28 02:46:15,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 02:46:15,628 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:46:15,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1200415825, now seen corresponding path program 6 times [2023-01-28 02:46:15,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196136468] [2023-01-28 02:46:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:15,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:46:16,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:16,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196136468] [2023-01-28 02:46:16,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196136468] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:16,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:16,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422756530] [2023-01-28 02:46:16,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:46:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:46:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:46:16,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 736 [2023-01-28 02:46:16,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 121 flow. Second operand has 9 states, 9 states have (on average 258.6666666666667) internal successors, (2328), 9 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states 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 02:46:16,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:16,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 736 [2023-01-28 02:46:16,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:16,503 INFO L130 PetriNetUnfolder]: 7/33 cut-off events. [2023-01-28 02:46:16,503 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 02:46:16,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 33 events. 7/33 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 112. Up to 18 conditions per place. [2023-01-28 02:46:16,504 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-01-28 02:46:16,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 30 transitions, 184 flow [2023-01-28 02:46:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:46:16,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:46:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1563 transitions. [2023-01-28 02:46:16,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3539402173913043 [2023-01-28 02:46:16,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1563 transitions. [2023-01-28 02:46:16,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1563 transitions. [2023-01-28 02:46:16,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:16,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1563 transitions. [2023-01-28 02:46:16,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states 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 02:46:16,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 736.0) internal successors, (5152), 7 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states 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 02:46:16,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 736.0) internal successors, (5152), 7 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states 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 02:46:16,515 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 121 flow. Second operand 6 states and 1563 transitions. [2023-01-28 02:46:16,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 30 transitions, 184 flow [2023-01-28 02:46:16,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 158 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-01-28 02:46:16,516 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-01-28 02:46:16,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-01-28 02:46:16,518 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-01-28 02:46:16,518 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-01-28 02:46:16,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 258.6666666666667) internal successors, (2328), 9 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states 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 02:46:16,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 02:46:16,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 02:46:16,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 02:46:16,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 02:46:16,523 INFO L445 BasicCegarLoop]: Path program histogram: [12, 6, 1, 1, 1, 1] [2023-01-28 02:46:16,525 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:46:16,525 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:46:16,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:46:16 BasicIcfg [2023-01-28 02:46:16,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:46:16,528 INFO L158 Benchmark]: Toolchain (without parser) took 38117.71ms. Allocated memory was 358.6MB in the beginning and 1.1GB in the end (delta: 723.5MB). Free memory was 317.7MB in the beginning and 901.3MB in the end (delta: -583.6MB). Peak memory consumption was 142.8MB. Max. memory is 16.0GB. [2023-01-28 02:46:16,529 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:46:16,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.72ms. Allocated memory is still 358.6MB. Free memory was 317.5MB in the beginning and 305.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 02:46:16,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.90ms. Allocated memory is still 358.6MB. Free memory was 305.2MB in the beginning and 302.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 02:46:16,529 INFO L158 Benchmark]: Boogie Preprocessor took 60.17ms. Allocated memory is still 358.6MB. Free memory was 302.5MB in the beginning and 300.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:46:16,529 INFO L158 Benchmark]: RCFGBuilder took 604.72ms. Allocated memory is still 358.6MB. Free memory was 300.4MB in the beginning and 274.9MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 02:46:16,530 INFO L158 Benchmark]: TraceAbstraction took 37059.82ms. Allocated memory was 358.6MB in the beginning and 1.1GB in the end (delta: 723.5MB). Free memory was 274.2MB in the beginning and 901.3MB in the end (delta: -627.1MB). Peak memory consumption was 98.8MB. Max. memory is 16.0GB. [2023-01-28 02:46:16,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 324.72ms. Allocated memory is still 358.6MB. Free memory was 317.5MB in the beginning and 305.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.90ms. Allocated memory is still 358.6MB. Free memory was 305.2MB in the beginning and 302.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 60.17ms. Allocated memory is still 358.6MB. Free memory was 302.5MB in the beginning and 300.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 604.72ms. Allocated memory is still 358.6MB. Free memory was 300.4MB in the beginning and 274.9MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 37059.82ms. Allocated memory was 358.6MB in the beginning and 1.1GB in the end (delta: 723.5MB). Free memory was 274.2MB in the beginning and 901.3MB in the end (delta: -627.1MB). Peak memory consumption was 98.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.3s, 312 PlacesBefore, 27 PlacesAfterwards, 333 TransitionsBefore, 25 TransitionsAfterwards, 6048 CoEnabledTransitionPairs, 8 FixpointIterations, 198 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 57 TrivialYvCompositions, 25 ConcurrentYvCompositions, 23 ChoiceCompositions, 393 TotalNumberOfCompositions, 6391 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5583, independent: 5482, independent conditional: 0, independent unconditional: 5482, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3489, independent: 3467, independent conditional: 0, independent unconditional: 3467, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5583, independent: 2015, independent conditional: 0, independent unconditional: 2015, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 3489, unknown conditional: 0, unknown unconditional: 3489] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 408 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 36.9s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1207 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1207 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4000 IncrementalHoareTripleChecker+Invalid, 4103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 0 mSDtfsCounter, 4000 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1276occurred in iteration=14, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 8650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 78/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 02:46:16,548 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...