/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:01:52,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:01:52,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:01:52,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:01:52,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:01:52,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:01:52,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:01:52,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:01:52,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:01:52,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:01:52,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:01:52,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:01:52,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:01:52,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:01:52,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:01:52,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:01:52,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:01:52,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:01:52,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:01:52,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:01:52,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:01:52,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:01:52,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:01:52,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:01:52,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:01:52,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:01:52,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:01:52,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:01:52,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:01:52,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:01:52,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:01:52,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:01:52,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:01:52,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:01:52,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:01:52,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:01:52,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:01:52,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:01:52,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:01:52,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:01:52,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:01:52,083 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 09:01:52,103 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:01:52,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:01:52,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:01:52,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:01:52,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:01:52,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:01:52,105 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:01:52,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:01:52,106 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:01:52,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:01:52,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:01:52,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:01:52,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:01:52,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:01:52,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:01:52,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:01:52,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:01:52,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:01:52,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:01:52,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:01:52,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:01:52,108 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:01:52,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:01:52,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:01:52,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:01:52,304 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:01:52,305 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:01:52,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-01-28 09:01:53,307 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:01:53,492 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:01:53,492 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-01-28 09:01:53,496 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00fd09091/4a8fadce55334f1ba8a505d77eb947cd/FLAG4364bc6a6 [2023-01-28 09:01:53,505 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00fd09091/4a8fadce55334f1ba8a505d77eb947cd [2023-01-28 09:01:53,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:01:53,508 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:01:53,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:01:53,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:01:53,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:01:53,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a61e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53, skipping insertion in model container [2023-01-28 09:01:53,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:01:53,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:01:53,635 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-trans.wvr.c[3945,3958] [2023-01-28 09:01:53,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:01:53,650 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:01:53,666 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-trans.wvr.c[3945,3958] [2023-01-28 09:01:53,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:01:53,679 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:01:53,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53 WrapperNode [2023-01-28 09:01:53,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:01:53,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:01:53,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:01:53,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:01:53,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,724 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-01-28 09:01:53,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:01:53,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:01:53,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:01:53,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:01:53,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,750 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:01:53,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:01:53,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:01:53,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:01:53,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (1/1) ... [2023-01-28 09:01:53,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:01:53,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:01:53,792 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 09:01:53,793 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 09:01:53,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:01:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:01:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:01:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:01:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:01:53,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:01:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:01:53,817 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 09:01:53,908 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:01:53,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:01:54,415 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:01:54,425 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:01:54,425 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 09:01:54,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:01:54 BoogieIcfgContainer [2023-01-28 09:01:54,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:01:54,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:01:54,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:01:54,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:01:54,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:01:53" (1/3) ... [2023-01-28 09:01:54,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c926a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:01:54, skipping insertion in model container [2023-01-28 09:01:54,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:53" (2/3) ... [2023-01-28 09:01:54,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c926a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:01:54, skipping insertion in model container [2023-01-28 09:01:54,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:01:54" (3/3) ... [2023-01-28 09:01:54,432 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-01-28 09:01:54,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:01:54,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:01:54,442 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:01:54,615 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:01:54,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-01-28 09:01:54,816 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-01-28 09:01:54,816 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:54,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-28 09:01:54,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-01-28 09:01:54,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-01-28 09:01:54,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:01:54,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-28 09:01:54,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-28 09:01:54,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-01-28 09:01:54,922 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-01-28 09:01:54,923 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:54,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-28 09:01:54,933 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-01-28 09:02:09,021 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-01-28 09:02:09,021 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-01-28 09:02:09,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:02:09,042 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;@54fe16ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:02:09,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:02:09,050 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-01-28 09:02:09,050 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:02:09,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:09,051 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, 1] [2023-01-28 09:02:09,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:09,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash 558250822, now seen corresponding path program 1 times [2023-01-28 09:02:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:09,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600959201] [2023-01-28 09:02:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:09,381 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 09:02:09,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:09,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600959201] [2023-01-28 09:02:09,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600959201] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:09,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:09,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:02:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38427519] [2023-01-28 09:02:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:09,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 09:02:09,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 09:02:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 09:02:09,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-01-28 09:02:09,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:09,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-01-28 09:02:09,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:09,600 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-01-28 09:02:09,600 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-01-28 09:02:09,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-01-28 09:02:09,605 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-01-28 09:02:09,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-01-28 09:02:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 09:02:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 09:02:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-01-28 09:02:09,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-01-28 09:02:09,621 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-01-28 09:02:09,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-01-28 09:02:09,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:09,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-01-28 09:02:09,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,640 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,641 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-01-28 09:02:09,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-01-28 09:02:09,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:02:09,647 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-01-28 09:02:09,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-01-28 09:02:09,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-01-28 09:02:09,653 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-01-28 09:02:09,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:09,654 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, 1, 1, 1, 1] [2023-01-28 09:02:09,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:02:09,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:09,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-01-28 09:02:09,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:09,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093448599] [2023-01-28 09:02:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:09,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:09,793 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 09:02:09,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:09,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093448599] [2023-01-28 09:02:09,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093448599] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:09,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:02:09,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448360050] [2023-01-28 09:02:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:09,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:02:09,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:02:09,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:02:09,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-01-28 09:02:09,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:09,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-01-28 09:02:09,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:09,966 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-01-28 09:02:09,967 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 09:02:09,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-01-28 09:02:09,971 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-28 09:02:09,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-01-28 09:02:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:02:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:02:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-01-28 09:02:09,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-01-28 09:02:09,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-01-28 09:02:09,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-01-28 09:02:09,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:09,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-01-28 09:02:09,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,981 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-01-28 09:02:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-01-28 09:02:09,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 09:02:09,983 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-01-28 09:02:09,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-01-28 09:02:09,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-01-28 09:02:09,984 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-01-28 09:02:09,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:09,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:09,985 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, 1, 1, 1, 1, 1] [2023-01-28 09:02:09,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:02:09,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:09,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-01-28 09:02:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:09,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428753306] [2023-01-28 09:02:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:09,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:10,152 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 09:02:10,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:10,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428753306] [2023-01-28 09:02:10,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428753306] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:10,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:10,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:02:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015263984] [2023-01-28 09:02:10,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:10,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:02:10,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:02:10,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:02:10,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 1064 [2023-01-28 09:02:10,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:10,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 1064 [2023-01-28 09:02:10,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:10,311 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-01-28 09:02:10,312 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-01-28 09:02:10,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-01-28 09:02:10,316 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-28 09:02:10,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-01-28 09:02:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:02:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:02:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1339 transitions. [2023-01-28 09:02:10,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41948621553884713 [2023-01-28 09:02:10,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1339 transitions. [2023-01-28 09:02:10,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1339 transitions. [2023-01-28 09:02:10,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:10,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1339 transitions. [2023-01-28 09:02:10,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,327 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1339 transitions. [2023-01-28 09:02:10,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-01-28 09:02:10,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:02:10,331 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-01-28 09:02:10,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-01-28 09:02:10,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-01-28 09:02:10,334 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-01-28 09:02:10,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:10,336 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, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:10,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:02:10,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:10,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-01-28 09:02:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:10,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482323150] [2023-01-28 09:02:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:10,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:10,462 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 09:02:10,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482323150] [2023-01-28 09:02:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482323150] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:10,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:10,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:02:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96900116] [2023-01-28 09:02:10,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:10,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:02:10,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:10,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:02:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:02:10,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-28 09:02:10,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:10,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-28 09:02:10,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:10,595 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-01-28 09:02:10,595 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-28 09:02:10,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-01-28 09:02:10,599 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-01-28 09:02:10,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-01-28 09:02:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:02:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:02:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2023-01-28 09:02:10,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40484022556390975 [2023-01-28 09:02:10,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2023-01-28 09:02:10,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2023-01-28 09:02:10,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:10,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2023-01-28 09:02:10,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,612 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,612 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1723 transitions. [2023-01-28 09:02:10,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-01-28 09:02:10,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:02:10,614 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-01-28 09:02:10,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-01-28 09:02:10,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-01-28 09:02:10,615 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-01-28 09:02:10,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:10,616 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:10,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:02:10,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:10,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:10,617 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-01-28 09:02:10,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:10,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553654494] [2023-01-28 09:02:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:10,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:10,722 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 09:02:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553654494] [2023-01-28 09:02:10,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553654494] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:10,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:10,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:02:10,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71216336] [2023-01-28 09:02:10,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:10,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:02:10,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:02:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:02:10,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-28 09:02:10,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:10,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-28 09:02:10,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:10,856 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-01-28 09:02:10,856 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-28 09:02:10,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-01-28 09:02:10,860 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-01-28 09:02:10,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-01-28 09:02:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:02:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:02:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2023-01-28 09:02:10,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050751879699248 [2023-01-28 09:02:10,863 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2023-01-28 09:02:10,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2023-01-28 09:02:10,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:10,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2023-01-28 09:02:10,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,873 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,873 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1724 transitions. [2023-01-28 09:02:10,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-01-28 09:02:10,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:02:10,875 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-01-28 09:02:10,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-01-28 09:02:10,876 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-01-28 09:02:10,876 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-01-28 09:02:10,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:10,877 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:10,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:02:10,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:10,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-01-28 09:02:10,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:10,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170389665] [2023-01-28 09:02:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:10,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:10,985 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 09:02:10,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:10,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170389665] [2023-01-28 09:02:10,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170389665] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:10,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:10,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:02:10,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058018208] [2023-01-28 09:02:10,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:10,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:02:10,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:10,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:02:10,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:02:10,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 09:02:10,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:10,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 09:02:10,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:11,126 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-01-28 09:02:11,127 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-01-28 09:02:11,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-01-28 09:02:11,131 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-01-28 09:02:11,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-01-28 09:02:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:02:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:02:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 09:02:11,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 09:02:11,135 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 09:02:11,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 09:02:11,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:11,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 09:02:11,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,142 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,142 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1735 transitions. [2023-01-28 09:02:11,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-01-28 09:02:11,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:02:11,144 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-01-28 09:02:11,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-01-28 09:02:11,144 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-01-28 09:02:11,144 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-01-28 09:02:11,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:11,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:02:11,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:11,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-01-28 09:02:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:11,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848396660] [2023-01-28 09:02:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:11,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:02:11,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848396660] [2023-01-28 09:02:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848396660] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:02:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911816907] [2023-01-28 09:02:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:11,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:02:11,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:02:11,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:02:11,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:02:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:11,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 09:02:11,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:02:11,486 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 09:02:11,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:02:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911816907] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:11,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:02:11,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-01-28 09:02:11,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872154713] [2023-01-28 09:02:11,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:11,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:02:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:11,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:02:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:11,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 09:02:11,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:11,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 09:02:11,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:11,662 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-01-28 09:02:11,662 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-28 09:02:11,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-01-28 09:02:11,666 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-01-28 09:02:11,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-01-28 09:02:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:02:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:02:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 09:02:11,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 09:02:11,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 09:02:11,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 09:02:11,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:11,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 09:02:11,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,677 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,677 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1735 transitions. [2023-01-28 09:02:11,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-01-28 09:02:11,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:02:11,679 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-01-28 09:02:11,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-01-28 09:02:11,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-01-28 09:02:11,680 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-01-28 09:02:11,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:11,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:11,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 09:02:11,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:02:11,887 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:11,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-01-28 09:02:11,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:11,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415388817] [2023-01-28 09:02:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:11,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 09:02:12,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:12,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415388817] [2023-01-28 09:02:12,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415388817] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:12,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:12,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:02:12,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187500332] [2023-01-28 09:02:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:12,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:02:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:02:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:02:12,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 09:02:12,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:12,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:12,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 09:02:12,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:12,214 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-01-28 09:02:12,214 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-01-28 09:02:12,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-01-28 09:02:12,219 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-01-28 09:02:12,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-01-28 09:02:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:02:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:02:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 09:02:12,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 09:02:12,223 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 09:02:12,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 09:02:12,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:12,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 09:02:12,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:12,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:12,235 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:12,235 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1735 transitions. [2023-01-28 09:02:12,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-01-28 09:02:12,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:02:12,237 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-01-28 09:02:12,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-01-28 09:02:12,239 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-01-28 09:02:12,239 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-01-28 09:02:12,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:12,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:12,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:12,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:02:12,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:12,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-01-28 09:02:12,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:12,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372096123] [2023-01-28 09:02:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:12,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:13,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372096123] [2023-01-28 09:02:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372096123] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:13,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:13,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-28 09:02:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250965902] [2023-01-28 09:02:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 09:02:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 09:02:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-01-28 09:02:13,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 1064 [2023-01-28 09:02:13,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 17 states, 17 states have (on average 338.05882352941177) internal successors, (5747), 17 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:13,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:13,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 1064 [2023-01-28 09:02:13,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:16,051 INFO L130 PetriNetUnfolder]: 2269/3572 cut-off events. [2023-01-28 09:02:16,051 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-01-28 09:02:16,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8196 conditions, 3572 events. 2269/3572 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19020 event pairs, 402 based on Foata normal form. 1/3277 useless extension candidates. Maximal degree in co-relation 8185. Up to 866 conditions per place. [2023-01-28 09:02:16,065 INFO L137 encePairwiseOnDemand]: 1044/1064 looper letters, 194 selfloop transitions, 62 changer transitions 7/263 dead transitions. [2023-01-28 09:02:16,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 263 transitions, 1256 flow [2023-01-28 09:02:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 09:02:16,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 09:02:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7307 transitions. [2023-01-28 09:02:16,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32702291442892945 [2023-01-28 09:02:16,077 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7307 transitions. [2023-01-28 09:02:16,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7307 transitions. [2023-01-28 09:02:16,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:16,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7307 transitions. [2023-01-28 09:02:16,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 347.95238095238096) internal successors, (7307), 21 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:16,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:16,108 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:16,108 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 21 states and 7307 transitions. [2023-01-28 09:02:16,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 263 transitions, 1256 flow [2023-01-28 09:02:16,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 263 transitions, 1250 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:02:16,119 INFO L231 Difference]: Finished difference. Result has 83 places, 116 transitions, 633 flow [2023-01-28 09:02:16,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=633, PETRI_PLACES=83, PETRI_TRANSITIONS=116} [2023-01-28 09:02:16,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-01-28 09:02:16,120 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 116 transitions, 633 flow [2023-01-28 09:02:16,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 338.05882352941177) internal successors, (5747), 17 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:16,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:16,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:16,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:02:16,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:16,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-01-28 09:02:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:16,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595468415] [2023-01-28 09:02:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:16,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:17,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595468415] [2023-01-28 09:02:17,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595468415] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:17,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:17,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 09:02:17,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830067946] [2023-01-28 09:02:17,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:02:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:02:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:02:17,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 1064 [2023-01-28 09:02:17,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 633 flow. Second operand has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:17,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:17,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 1064 [2023-01-28 09:02:17,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:19,355 INFO L130 PetriNetUnfolder]: 5246/8500 cut-off events. [2023-01-28 09:02:19,355 INFO L131 PetriNetUnfolder]: For 13035/13035 co-relation queries the response was YES. [2023-01-28 09:02:19,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29269 conditions, 8500 events. 5246/8500 cut-off events. For 13035/13035 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 55536 event pairs, 886 based on Foata normal form. 1/8500 useless extension candidates. Maximal degree in co-relation 29246. Up to 2730 conditions per place. [2023-01-28 09:02:19,407 INFO L137 encePairwiseOnDemand]: 1047/1064 looper letters, 295 selfloop transitions, 221 changer transitions 7/523 dead transitions. [2023-01-28 09:02:19,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 523 transitions, 3808 flow [2023-01-28 09:02:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 09:02:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 09:02:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7983 transitions. [2023-01-28 09:02:19,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3572771213748657 [2023-01-28 09:02:19,422 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7983 transitions. [2023-01-28 09:02:19,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7983 transitions. [2023-01-28 09:02:19,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:19,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7983 transitions. [2023-01-28 09:02:19,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 380.14285714285717) internal successors, (7983), 21 states have internal predecessors, (7983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:19,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:19,454 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:19,454 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 633 flow. Second operand 21 states and 7983 transitions. [2023-01-28 09:02:19,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 523 transitions, 3808 flow [2023-01-28 09:02:19,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 523 transitions, 3791 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 09:02:19,578 INFO L231 Difference]: Finished difference. Result has 114 places, 353 transitions, 2987 flow [2023-01-28 09:02:19,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2987, PETRI_PLACES=114, PETRI_TRANSITIONS=353} [2023-01-28 09:02:19,580 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-01-28 09:02:19,580 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 353 transitions, 2987 flow [2023-01-28 09:02:19,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:19,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:19,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:19,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:02:19,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:19,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:19,582 INFO L85 PathProgramCache]: Analyzing trace with hash 438698926, now seen corresponding path program 3 times [2023-01-28 09:02:19,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:19,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276472068] [2023-01-28 09:02:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:19,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:20,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276472068] [2023-01-28 09:02:20,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276472068] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:20,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:20,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:02:20,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47150094] [2023-01-28 09:02:20,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:20,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:02:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:02:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:02:20,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:02:20,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 353 transitions, 2987 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:20,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:20,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:02:20,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:22,158 INFO L130 PetriNetUnfolder]: 6096/10078 cut-off events. [2023-01-28 09:02:22,158 INFO L131 PetriNetUnfolder]: For 37061/37061 co-relation queries the response was YES. [2023-01-28 09:02:22,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45605 conditions, 10078 events. 6096/10078 cut-off events. For 37061/37061 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 69059 event pairs, 1289 based on Foata normal form. 1/10078 useless extension candidates. Maximal degree in co-relation 45568. Up to 4742 conditions per place. [2023-01-28 09:02:22,231 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 606 selfloop transitions, 77 changer transitions 7/690 dead transitions. [2023-01-28 09:02:22,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 690 transitions, 7251 flow [2023-01-28 09:02:22,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:02:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:02:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3613 transitions. [2023-01-28 09:02:22,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.377297410192147 [2023-01-28 09:02:22,236 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3613 transitions. [2023-01-28 09:02:22,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3613 transitions. [2023-01-28 09:02:22,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:22,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3613 transitions. [2023-01-28 09:02:22,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 401.44444444444446) internal successors, (3613), 9 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:22,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:22,248 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:22,248 INFO L175 Difference]: Start difference. First operand has 114 places, 353 transitions, 2987 flow. Second operand 9 states and 3613 transitions. [2023-01-28 09:02:22,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 690 transitions, 7251 flow [2023-01-28 09:02:22,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 690 transitions, 7177 flow, removed 37 selfloop flow, removed 1 redundant places. [2023-01-28 09:02:22,674 INFO L231 Difference]: Finished difference. Result has 127 places, 363 transitions, 3275 flow [2023-01-28 09:02:22,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3275, PETRI_PLACES=127, PETRI_TRANSITIONS=363} [2023-01-28 09:02:22,675 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-28 09:02:22,675 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 363 transitions, 3275 flow [2023-01-28 09:02:22,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:22,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:22,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:22,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:02:22,676 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:22,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1462585081, now seen corresponding path program 1 times [2023-01-28 09:02:22,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249356075] [2023-01-28 09:02:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:22,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:22,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249356075] [2023-01-28 09:02:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249356075] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:22,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:02:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012664410] [2023-01-28 09:02:22,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:22,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:02:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:02:22,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:02:22,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1064 [2023-01-28 09:02:22,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 363 transitions, 3275 flow. Second operand has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:22,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:22,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1064 [2023-01-28 09:02:22,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:24,604 INFO L130 PetriNetUnfolder]: 7129/12371 cut-off events. [2023-01-28 09:02:24,604 INFO L131 PetriNetUnfolder]: For 50717/50717 co-relation queries the response was YES. [2023-01-28 09:02:24,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56389 conditions, 12371 events. 7129/12371 cut-off events. For 50717/50717 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 94297 event pairs, 2708 based on Foata normal form. 181/12551 useless extension candidates. Maximal degree in co-relation 56345. Up to 8320 conditions per place. [2023-01-28 09:02:24,702 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 502 selfloop transitions, 37 changer transitions 0/539 dead transitions. [2023-01-28 09:02:24,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 539 transitions, 5981 flow [2023-01-28 09:02:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:02:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:02:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1335 transitions. [2023-01-28 09:02:24,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182330827067669 [2023-01-28 09:02:24,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1335 transitions. [2023-01-28 09:02:24,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1335 transitions. [2023-01-28 09:02:24,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:24,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1335 transitions. [2023-01-28 09:02:24,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:24,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:24,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:24,711 INFO L175 Difference]: Start difference. First operand has 127 places, 363 transitions, 3275 flow. Second operand 3 states and 1335 transitions. [2023-01-28 09:02:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 539 transitions, 5981 flow [2023-01-28 09:02:25,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 539 transitions, 5860 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 09:02:25,231 INFO L231 Difference]: Finished difference. Result has 127 places, 369 transitions, 3389 flow [2023-01-28 09:02:25,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3389, PETRI_PLACES=127, PETRI_TRANSITIONS=369} [2023-01-28 09:02:25,232 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-28 09:02:25,232 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 369 transitions, 3389 flow [2023-01-28 09:02:25,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:25,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:25,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:25,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:02:25,233 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:25,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2026890830, now seen corresponding path program 4 times [2023-01-28 09:02:25,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:25,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122980579] [2023-01-28 09:02:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:25,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:25,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:25,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122980579] [2023-01-28 09:02:25,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122980579] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:25,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:25,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 09:02:25,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075191033] [2023-01-28 09:02:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:25,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:02:25,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:25,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:02:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-01-28 09:02:25,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1064 [2023-01-28 09:02:25,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 369 transitions, 3389 flow. Second operand has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:25,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:25,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1064 [2023-01-28 09:02:25,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:28,243 INFO L130 PetriNetUnfolder]: 8219/14587 cut-off events. [2023-01-28 09:02:28,243 INFO L131 PetriNetUnfolder]: For 56399/56399 co-relation queries the response was YES. [2023-01-28 09:02:28,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66673 conditions, 14587 events. 8219/14587 cut-off events. For 56399/56399 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 117520 event pairs, 1221 based on Foata normal form. 2/14588 useless extension candidates. Maximal degree in co-relation 66629. Up to 6191 conditions per place. [2023-01-28 09:02:28,346 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 659 selfloop transitions, 78 changer transitions 7/744 dead transitions. [2023-01-28 09:02:28,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 744 transitions, 8186 flow [2023-01-28 09:02:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:02:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:02:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4230 transitions. [2023-01-28 09:02:28,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3614149008885851 [2023-01-28 09:02:28,352 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4230 transitions. [2023-01-28 09:02:28,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4230 transitions. [2023-01-28 09:02:28,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:28,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4230 transitions. [2023-01-28 09:02:28,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 384.54545454545456) internal successors, (4230), 11 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:28,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:28,365 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:28,366 INFO L175 Difference]: Start difference. First operand has 127 places, 369 transitions, 3389 flow. Second operand 11 states and 4230 transitions. [2023-01-28 09:02:28,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 744 transitions, 8186 flow [2023-01-28 09:02:29,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 744 transitions, 8107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:02:29,054 INFO L231 Difference]: Finished difference. Result has 142 places, 380 transitions, 3717 flow [2023-01-28 09:02:29,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3717, PETRI_PLACES=142, PETRI_TRANSITIONS=380} [2023-01-28 09:02:29,055 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2023-01-28 09:02:29,055 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 380 transitions, 3717 flow [2023-01-28 09:02:29,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:29,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:29,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:29,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 09:02:29,056 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:29,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 5 times [2023-01-28 09:02:29,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:29,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132282260] [2023-01-28 09:02:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:29,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132282260] [2023-01-28 09:02:29,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132282260] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:29,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:29,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:02:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539105176] [2023-01-28 09:02:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:02:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:02:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:02:29,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:02:29,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 380 transitions, 3717 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:29,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:29,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:02:29,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:32,419 INFO L130 PetriNetUnfolder]: 8453/15378 cut-off events. [2023-01-28 09:02:32,420 INFO L131 PetriNetUnfolder]: For 71719/71719 co-relation queries the response was YES. [2023-01-28 09:02:32,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72155 conditions, 15378 events. 8453/15378 cut-off events. For 71719/71719 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 128508 event pairs, 2359 based on Foata normal form. 1/15378 useless extension candidates. Maximal degree in co-relation 72105. Up to 7695 conditions per place. [2023-01-28 09:02:32,545 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 476 selfloop transitions, 48 changer transitions 8/532 dead transitions. [2023-01-28 09:02:32,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 532 transitions, 6034 flow [2023-01-28 09:02:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:02:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:02:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3615 transitions. [2023-01-28 09:02:32,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3775062656641604 [2023-01-28 09:02:32,551 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3615 transitions. [2023-01-28 09:02:32,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3615 transitions. [2023-01-28 09:02:32,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:32,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3615 transitions. [2023-01-28 09:02:32,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 401.6666666666667) internal successors, (3615), 9 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:32,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:32,560 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:32,560 INFO L175 Difference]: Start difference. First operand has 142 places, 380 transitions, 3717 flow. Second operand 9 states and 3615 transitions. [2023-01-28 09:02:32,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 532 transitions, 6034 flow [2023-01-28 09:02:33,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 532 transitions, 5973 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-01-28 09:02:33,415 INFO L231 Difference]: Finished difference. Result has 150 places, 394 transitions, 3979 flow [2023-01-28 09:02:33,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3979, PETRI_PLACES=150, PETRI_TRANSITIONS=394} [2023-01-28 09:02:33,416 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2023-01-28 09:02:33,416 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 394 transitions, 3979 flow [2023-01-28 09:02:33,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:33,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:33,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:33,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 09:02:33,417 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:33,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1165735616, now seen corresponding path program 6 times [2023-01-28 09:02:33,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:33,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235006877] [2023-01-28 09:02:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:34,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235006877] [2023-01-28 09:02:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235006877] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:34,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 09:02:34,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207899027] [2023-01-28 09:02:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:34,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:02:34,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:34,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:02:34,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:02:34,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 1064 [2023-01-28 09:02:34,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 394 transitions, 3979 flow. Second operand has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:34,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:34,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 1064 [2023-01-28 09:02:34,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:39,251 INFO L130 PetriNetUnfolder]: 14218/26052 cut-off events. [2023-01-28 09:02:39,251 INFO L131 PetriNetUnfolder]: For 135566/135566 co-relation queries the response was YES. [2023-01-28 09:02:39,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124384 conditions, 26052 events. 14218/26052 cut-off events. For 135566/135566 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 237832 event pairs, 5116 based on Foata normal form. 2/26053 useless extension candidates. Maximal degree in co-relation 124330. Up to 12972 conditions per place. [2023-01-28 09:02:39,475 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 845 selfloop transitions, 76 changer transitions 7/928 dead transitions. [2023-01-28 09:02:39,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 928 transitions, 11055 flow [2023-01-28 09:02:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:02:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:02:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3804 transitions. [2023-01-28 09:02:39,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575187969924812 [2023-01-28 09:02:39,480 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3804 transitions. [2023-01-28 09:02:39,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3804 transitions. [2023-01-28 09:02:39,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:39,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3804 transitions. [2023-01-28 09:02:39,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.4) internal successors, (3804), 10 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:39,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:39,489 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:39,489 INFO L175 Difference]: Start difference. First operand has 150 places, 394 transitions, 3979 flow. Second operand 10 states and 3804 transitions. [2023-01-28 09:02:39,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 928 transitions, 11055 flow [2023-01-28 09:02:41,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 928 transitions, 10907 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:41,365 INFO L231 Difference]: Finished difference. Result has 162 places, 454 transitions, 5059 flow [2023-01-28 09:02:41,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5059, PETRI_PLACES=162, PETRI_TRANSITIONS=454} [2023-01-28 09:02:41,367 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2023-01-28 09:02:41,369 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 454 transitions, 5059 flow [2023-01-28 09:02:41,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:41,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:41,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:41,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 09:02:41,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:41,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1788906114, now seen corresponding path program 7 times [2023-01-28 09:02:41,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:41,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62270426] [2023-01-28 09:02:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:41,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:41,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:41,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62270426] [2023-01-28 09:02:41,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62270426] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:41,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:41,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:02:41,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883036841] [2023-01-28 09:02:41,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:41,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:02:41,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:02:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:02:41,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:02:41,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 454 transitions, 5059 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:41,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:41,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:02:41,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:47,597 INFO L130 PetriNetUnfolder]: 15648/28811 cut-off events. [2023-01-28 09:02:47,598 INFO L131 PetriNetUnfolder]: For 176467/176467 co-relation queries the response was YES. [2023-01-28 09:02:47,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142018 conditions, 28811 events. 15648/28811 cut-off events. For 176467/176467 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 268566 event pairs, 4073 based on Foata normal form. 1/28811 useless extension candidates. Maximal degree in co-relation 141958. Up to 14575 conditions per place. [2023-01-28 09:02:47,912 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 610 selfloop transitions, 69 changer transitions 8/687 dead transitions. [2023-01-28 09:02:47,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 687 transitions, 8629 flow [2023-01-28 09:02:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:02:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:02:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-28 09:02:47,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-28 09:02:47,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-28 09:02:47,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-28 09:02:47,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:47,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-28 09:02:47,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:47,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:47,925 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:47,925 INFO L175 Difference]: Start difference. First operand has 162 places, 454 transitions, 5059 flow. Second operand 9 states and 3631 transitions. [2023-01-28 09:02:47,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 687 transitions, 8629 flow [2023-01-28 09:02:50,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 687 transitions, 8535 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:50,459 INFO L231 Difference]: Finished difference. Result has 172 places, 480 transitions, 5549 flow [2023-01-28 09:02:50,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5549, PETRI_PLACES=172, PETRI_TRANSITIONS=480} [2023-01-28 09:02:50,460 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-01-28 09:02:50,460 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 480 transitions, 5549 flow [2023-01-28 09:02:50,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:50,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:50,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:50,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 09:02:50,461 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:50,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:50,461 INFO L85 PathProgramCache]: Analyzing trace with hash 977259368, now seen corresponding path program 8 times [2023-01-28 09:02:50,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:50,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062166947] [2023-01-28 09:02:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:50,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:51,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062166947] [2023-01-28 09:02:51,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062166947] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:51,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:51,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 09:02:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244055315] [2023-01-28 09:02:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:51,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 09:02:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 09:02:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 09:02:51,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1064 [2023-01-28 09:02:51,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 480 transitions, 5549 flow. Second operand has 15 states, 15 states have (on average 349.3333333333333) internal successors, (5240), 15 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:51,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:51,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1064 [2023-01-28 09:02:51,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:58,844 INFO L130 PetriNetUnfolder]: 18518/34214 cut-off events. [2023-01-28 09:02:58,844 INFO L131 PetriNetUnfolder]: For 225443/225443 co-relation queries the response was YES. [2023-01-28 09:02:59,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172078 conditions, 34214 events. 18518/34214 cut-off events. For 225443/225443 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 328469 event pairs, 4128 based on Foata normal form. 4/34217 useless extension candidates. Maximal degree in co-relation 172013. Up to 9992 conditions per place. [2023-01-28 09:02:59,301 INFO L137 encePairwiseOnDemand]: 1047/1064 looper letters, 578 selfloop transitions, 600 changer transitions 8/1186 dead transitions. [2023-01-28 09:02:59,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 1186 transitions, 14932 flow [2023-01-28 09:02:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 09:02:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 09:02:59,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7546 transitions. [2023-01-28 09:02:59,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33771929824561403 [2023-01-28 09:02:59,308 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7546 transitions. [2023-01-28 09:02:59,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7546 transitions. [2023-01-28 09:02:59,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:59,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7546 transitions. [2023-01-28 09:02:59,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 359.3333333333333) internal successors, (7546), 21 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:59,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:59,326 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:59,326 INFO L175 Difference]: Start difference. First operand has 172 places, 480 transitions, 5549 flow. Second operand 21 states and 7546 transitions. [2023-01-28 09:02:59,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 1186 transitions, 14932 flow [2023-01-28 09:03:02,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 1186 transitions, 14698 flow, removed 39 selfloop flow, removed 3 redundant places. [2023-01-28 09:03:02,792 INFO L231 Difference]: Finished difference. Result has 201 places, 844 transitions, 11876 flow [2023-01-28 09:03:02,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=5437, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=11876, PETRI_PLACES=201, PETRI_TRANSITIONS=844} [2023-01-28 09:03:02,793 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2023-01-28 09:03:02,793 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 844 transitions, 11876 flow [2023-01-28 09:03:02,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 349.3333333333333) internal successors, (5240), 15 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:02,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:02,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:02,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:03:02,794 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:03:02,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1362034862, now seen corresponding path program 9 times [2023-01-28 09:03:02,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:02,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683683788] [2023-01-28 09:03:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:02,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683683788] [2023-01-28 09:03:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683683788] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:03,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:03,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:03:03,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35534837] [2023-01-28 09:03:03,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:03,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:03:03,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:03,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:03:03,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:03:03,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:03:03,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 844 transitions, 11876 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:03,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:03,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:03:03,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:12,594 INFO L130 PetriNetUnfolder]: 20471/37978 cut-off events. [2023-01-28 09:03:12,594 INFO L131 PetriNetUnfolder]: For 366447/366447 co-relation queries the response was YES. [2023-01-28 09:03:13,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218306 conditions, 37978 events. 20471/37978 cut-off events. For 366447/366447 co-relation queries the response was YES. Maximal size of possible extension queue 2499. Compared 370305 event pairs, 6191 based on Foata normal form. 1/37978 useless extension candidates. Maximal degree in co-relation 218229. Up to 18558 conditions per place. [2023-01-28 09:03:13,208 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 1062 selfloop transitions, 95 changer transitions 7/1164 dead transitions. [2023-01-28 09:03:13,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 1164 transitions, 17871 flow [2023-01-28 09:03:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:03:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:03:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3643 transitions. [2023-01-28 09:03:13,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38043024227234756 [2023-01-28 09:03:13,211 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3643 transitions. [2023-01-28 09:03:13,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3643 transitions. [2023-01-28 09:03:13,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:13,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3643 transitions. [2023-01-28 09:03:13,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 404.77777777777777) internal successors, (3643), 9 states have internal predecessors, (3643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:13,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:13,219 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:13,219 INFO L175 Difference]: Start difference. First operand has 201 places, 844 transitions, 11876 flow. Second operand 9 states and 3643 transitions. [2023-01-28 09:03:13,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 1164 transitions, 17871 flow [2023-01-28 09:03:23,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1164 transitions, 17622 flow, removed 100 selfloop flow, removed 3 redundant places. [2023-01-28 09:03:23,130 INFO L231 Difference]: Finished difference. Result has 212 places, 872 transitions, 12483 flow [2023-01-28 09:03:23,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=11722, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12483, PETRI_PLACES=212, PETRI_TRANSITIONS=872} [2023-01-28 09:03:23,131 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2023-01-28 09:03:23,131 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 872 transitions, 12483 flow [2023-01-28 09:03:23,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:23,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:23,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:23,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 09:03:23,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:03:23,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:23,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1669446438, now seen corresponding path program 10 times [2023-01-28 09:03:23,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:23,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313474896] [2023-01-28 09:03:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:23,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313474896] [2023-01-28 09:03:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313474896] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:23,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:23,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 09:03:23,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021515460] [2023-01-28 09:03:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:23,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:03:23,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:23,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:03:23,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:03:23,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 1064 [2023-01-28 09:03:23,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 872 transitions, 12483 flow. Second operand has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:23,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:23,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 1064 [2023-01-28 09:03:23,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:34,444 INFO L130 PetriNetUnfolder]: 20493/38039 cut-off events. [2023-01-28 09:03:34,445 INFO L131 PetriNetUnfolder]: For 386924/386924 co-relation queries the response was YES. [2023-01-28 09:03:34,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221603 conditions, 38039 events. 20493/38039 cut-off events. For 386924/386924 co-relation queries the response was YES. Maximal size of possible extension queue 2508. Compared 371577 event pairs, 6893 based on Foata normal form. 2/38040 useless extension candidates. Maximal degree in co-relation 221520. Up to 16626 conditions per place. [2023-01-28 09:03:35,064 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1118 selfloop transitions, 72 changer transitions 8/1198 dead transitions. [2023-01-28 09:03:35,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1198 transitions, 18917 flow [2023-01-28 09:03:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:03:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:03:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3802 transitions. [2023-01-28 09:03:35,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35733082706766917 [2023-01-28 09:03:35,068 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3802 transitions. [2023-01-28 09:03:35,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3802 transitions. [2023-01-28 09:03:35,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:35,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3802 transitions. [2023-01-28 09:03:35,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.2) internal successors, (3802), 10 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:35,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:35,075 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:35,076 INFO L175 Difference]: Start difference. First operand has 212 places, 872 transitions, 12483 flow. Second operand 10 states and 3802 transitions. [2023-01-28 09:03:35,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1198 transitions, 18917 flow [2023-01-28 09:03:42,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1198 transitions, 18619 flow, removed 81 selfloop flow, removed 2 redundant places. [2023-01-28 09:03:42,701 INFO L231 Difference]: Finished difference. Result has 224 places, 888 transitions, 12904 flow [2023-01-28 09:03:42,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=12345, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=872, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12904, PETRI_PLACES=224, PETRI_TRANSITIONS=888} [2023-01-28 09:03:42,702 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-01-28 09:03:42,702 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 888 transitions, 12904 flow [2023-01-28 09:03:42,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:42,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:42,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 09:03:42,703 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:03:42,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:42,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1563823200, now seen corresponding path program 11 times [2023-01-28 09:03:42,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:42,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761590769] [2023-01-28 09:03:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:42,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:43,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:43,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761590769] [2023-01-28 09:03:43,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761590769] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:43,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:43,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:03:43,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109303324] [2023-01-28 09:03:43,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:43,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:03:43,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:43,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:03:43,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:03:43,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:03:43,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 888 transitions, 12904 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:43,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:43,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:03:43,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:56,236 INFO L130 PetriNetUnfolder]: 26490/49576 cut-off events. [2023-01-28 09:03:56,236 INFO L131 PetriNetUnfolder]: For 525377/525377 co-relation queries the response was YES. [2023-01-28 09:03:57,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290463 conditions, 49576 events. 26490/49576 cut-off events. For 525377/525377 co-relation queries the response was YES. Maximal size of possible extension queue 3334. Compared 507995 event pairs, 10421 based on Foata normal form. 1/49576 useless extension candidates. Maximal degree in co-relation 290375. Up to 28414 conditions per place. [2023-01-28 09:03:57,173 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1360 selfloop transitions, 113 changer transitions 7/1480 dead transitions. [2023-01-28 09:03:57,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1480 transitions, 23963 flow [2023-01-28 09:03:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:03:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:03:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3635 transitions. [2023-01-28 09:03:57,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3795948203842941 [2023-01-28 09:03:57,177 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3635 transitions. [2023-01-28 09:03:57,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3635 transitions. [2023-01-28 09:03:57,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:57,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3635 transitions. [2023-01-28 09:03:57,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.8888888888889) internal successors, (3635), 9 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:57,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:57,188 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:57,188 INFO L175 Difference]: Start difference. First operand has 224 places, 888 transitions, 12904 flow. Second operand 9 states and 3635 transitions. [2023-01-28 09:03:57,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1480 transitions, 23963 flow [2023-01-28 09:04:11,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1480 transitions, 23854 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-01-28 09:04:11,291 INFO L231 Difference]: Finished difference. Result has 234 places, 942 transitions, 14256 flow [2023-01-28 09:04:11,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=12831, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14256, PETRI_PLACES=234, PETRI_TRANSITIONS=942} [2023-01-28 09:04:11,292 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2023-01-28 09:04:11,292 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 942 transitions, 14256 flow [2023-01-28 09:04:11,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:11,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:11,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:11,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 09:04:11,293 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:04:11,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:11,293 INFO L85 PathProgramCache]: Analyzing trace with hash -984770268, now seen corresponding path program 12 times [2023-01-28 09:04:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:11,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489188731] [2023-01-28 09:04:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:11,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:11,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489188731] [2023-01-28 09:04:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489188731] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:11,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:11,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:04:11,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101744985] [2023-01-28 09:04:11,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:11,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:04:11,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:11,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:04:11,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:04:11,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:04:11,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 942 transitions, 14256 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:11,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:11,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:04:11,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:27,118 INFO L130 PetriNetUnfolder]: 26489/49567 cut-off events. [2023-01-28 09:04:27,118 INFO L131 PetriNetUnfolder]: For 564938/564938 co-relation queries the response was YES. [2023-01-28 09:04:28,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294874 conditions, 49567 events. 26489/49567 cut-off events. For 564938/564938 co-relation queries the response was YES. Maximal size of possible extension queue 3304. Compared 507034 event pairs, 10655 based on Foata normal form. 1/49567 useless extension candidates. Maximal degree in co-relation 294780. Up to 28414 conditions per place. [2023-01-28 09:04:28,677 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1256 selfloop transitions, 176 changer transitions 8/1440 dead transitions. [2023-01-28 09:04:28,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1440 transitions, 23971 flow [2023-01-28 09:04:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:04:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:04:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3624 transitions. [2023-01-28 09:04:28,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-01-28 09:04:28,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3624 transitions. [2023-01-28 09:04:28,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3624 transitions. [2023-01-28 09:04:28,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:28,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3624 transitions. [2023-01-28 09:04:28,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.6666666666667) internal successors, (3624), 9 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:28,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:28,692 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:28,692 INFO L175 Difference]: Start difference. First operand has 234 places, 942 transitions, 14256 flow. Second operand 9 states and 3624 transitions. [2023-01-28 09:04:28,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1440 transitions, 23971 flow [2023-01-28 09:04:43,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1440 transitions, 23859 flow, removed 56 selfloop flow, removed 1 redundant places. [2023-01-28 09:04:43,876 INFO L231 Difference]: Finished difference. Result has 246 places, 1010 transitions, 15941 flow [2023-01-28 09:04:43,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14196, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15941, PETRI_PLACES=246, PETRI_TRANSITIONS=1010} [2023-01-28 09:04:43,877 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2023-01-28 09:04:43,877 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 1010 transitions, 15941 flow [2023-01-28 09:04:43,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:43,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:43,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:43,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 09:04:43,878 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:04:43,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1999783334, now seen corresponding path program 13 times [2023-01-28 09:04:43,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:43,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512447601] [2023-01-28 09:04:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:43,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:44,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:44,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512447601] [2023-01-28 09:04:44,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512447601] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:44,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:44,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:04:44,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946410025] [2023-01-28 09:04:44,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:44,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:04:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:04:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:04:44,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:04:44,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 1010 transitions, 15941 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:44,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:44,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:04:44,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:59,627 INFO L130 PetriNetUnfolder]: 27658/51752 cut-off events. [2023-01-28 09:04:59,628 INFO L131 PetriNetUnfolder]: For 605019/605019 co-relation queries the response was YES. [2023-01-28 09:05:00,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310774 conditions, 51752 events. 27658/51752 cut-off events. For 605019/605019 co-relation queries the response was YES. Maximal size of possible extension queue 3469. Compared 533021 event pairs, 10518 based on Foata normal form. 1/51752 useless extension candidates. Maximal degree in co-relation 310674. Up to 28475 conditions per place. [2023-01-28 09:05:00,775 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1380 selfloop transitions, 179 changer transitions 7/1566 dead transitions. [2023-01-28 09:05:00,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 1566 transitions, 26504 flow [2023-01-28 09:05:00,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:05:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:05:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3640 transitions. [2023-01-28 09:05:00,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38011695906432746 [2023-01-28 09:05:00,778 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3640 transitions. [2023-01-28 09:05:00,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3640 transitions. [2023-01-28 09:05:00,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:00,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3640 transitions. [2023-01-28 09:05:00,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 404.44444444444446) internal successors, (3640), 9 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:00,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:00,784 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:00,784 INFO L175 Difference]: Start difference. First operand has 246 places, 1010 transitions, 15941 flow. Second operand 9 states and 3640 transitions. [2023-01-28 09:05:00,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 1566 transitions, 26504 flow [2023-01-28 09:05:17,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 1566 transitions, 26229 flow, removed 69 selfloop flow, removed 2 redundant places. [2023-01-28 09:05:17,164 INFO L231 Difference]: Finished difference. Result has 256 places, 1038 transitions, 16780 flow [2023-01-28 09:05:17,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=15709, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16780, PETRI_PLACES=256, PETRI_TRANSITIONS=1038} [2023-01-28 09:05:17,165 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2023-01-28 09:05:17,165 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 1038 transitions, 16780 flow [2023-01-28 09:05:17,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:17,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:17,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:17,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 09:05:17,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:05:17,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:17,166 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 14 times [2023-01-28 09:05:17,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:17,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519463464] [2023-01-28 09:05:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:17,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519463464] [2023-01-28 09:05:17,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519463464] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:05:17,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:05:17,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:05:17,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578645550] [2023-01-28 09:05:17,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:17,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:05:17,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:17,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:05:17,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:05:17,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:05:17,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 1038 transitions, 16780 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:17,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:17,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:05:17,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:33,410 INFO L130 PetriNetUnfolder]: 27657/51743 cut-off events. [2023-01-28 09:05:33,410 INFO L131 PetriNetUnfolder]: For 624318/624318 co-relation queries the response was YES. [2023-01-28 09:05:34,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312034 conditions, 51743 events. 27657/51743 cut-off events. For 624318/624318 co-relation queries the response was YES. Maximal size of possible extension queue 3489. Compared 532246 event pairs, 11057 based on Foata normal form. 1/51743 useless extension candidates. Maximal degree in co-relation 311930. Up to 28475 conditions per place. [2023-01-28 09:05:34,601 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1267 selfloop transitions, 197 changer transitions 7/1471 dead transitions. [2023-01-28 09:05:34,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1471 transitions, 25457 flow [2023-01-28 09:05:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:05:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:05:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3627 transitions. [2023-01-28 09:05:34,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37875939849624063 [2023-01-28 09:05:34,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3627 transitions. [2023-01-28 09:05:34,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3627 transitions. [2023-01-28 09:05:34,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:34,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3627 transitions. [2023-01-28 09:05:34,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:34,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:34,612 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:34,612 INFO L175 Difference]: Start difference. First operand has 256 places, 1038 transitions, 16780 flow. Second operand 9 states and 3627 transitions. [2023-01-28 09:05:34,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1471 transitions, 25457 flow [2023-01-28 09:05:52,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1471 transitions, 25137 flow, removed 47 selfloop flow, removed 3 redundant places. [2023-01-28 09:05:52,685 INFO L231 Difference]: Finished difference. Result has 262 places, 1039 transitions, 16931 flow [2023-01-28 09:05:52,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16490, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16931, PETRI_PLACES=262, PETRI_TRANSITIONS=1039} [2023-01-28 09:05:52,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2023-01-28 09:05:52,686 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 1039 transitions, 16931 flow [2023-01-28 09:05:52,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:52,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:52,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:52,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 09:05:52,687 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:05:52,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:52,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1617919318, now seen corresponding path program 15 times [2023-01-28 09:05:52,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:52,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737424098] [2023-01-28 09:05:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:52,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:53,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:53,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737424098] [2023-01-28 09:05:53,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737424098] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:05:53,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:05:53,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:05:53,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326729432] [2023-01-28 09:05:53,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:53,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:05:53,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:53,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:05:53,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:05:53,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:05:53,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 1039 transitions, 16931 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:53,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:53,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:05:53,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:08,568 INFO L130 PetriNetUnfolder]: 27653/51739 cut-off events. [2023-01-28 09:06:08,568 INFO L131 PetriNetUnfolder]: For 631949/631949 co-relation queries the response was YES. [2023-01-28 09:06:09,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312748 conditions, 51739 events. 27653/51739 cut-off events. For 631949/631949 co-relation queries the response was YES. Maximal size of possible extension queue 3468. Compared 532242 event pairs, 11139 based on Foata normal form. 1/51739 useless extension candidates. Maximal degree in co-relation 312643. Up to 28475 conditions per place. [2023-01-28 09:06:09,696 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1386 selfloop transitions, 200 changer transitions 7/1593 dead transitions. [2023-01-28 09:06:09,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1593 transitions, 27300 flow [2023-01-28 09:06:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:06:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:06:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3651 transitions. [2023-01-28 09:06:09,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38126566416040103 [2023-01-28 09:06:09,698 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3651 transitions. [2023-01-28 09:06:09,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3651 transitions. [2023-01-28 09:06:09,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:09,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3651 transitions. [2023-01-28 09:06:09,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 405.6666666666667) internal successors, (3651), 9 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:09,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:09,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:09,705 INFO L175 Difference]: Start difference. First operand has 262 places, 1039 transitions, 16931 flow. Second operand 9 states and 3651 transitions. [2023-01-28 09:06:09,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1593 transitions, 27300 flow [2023-01-28 09:06:28,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1593 transitions, 27051 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-28 09:06:28,078 INFO L231 Difference]: Finished difference. Result has 272 places, 1073 transitions, 18068 flow [2023-01-28 09:06:28,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16727, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18068, PETRI_PLACES=272, PETRI_TRANSITIONS=1073} [2023-01-28 09:06:28,079 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2023-01-28 09:06:28,079 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 1073 transitions, 18068 flow [2023-01-28 09:06:28,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:28,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:28,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 09:06:28,080 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:06:28,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:28,080 INFO L85 PathProgramCache]: Analyzing trace with hash 841868078, now seen corresponding path program 16 times [2023-01-28 09:06:28,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:28,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722539117] [2023-01-28 09:06:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:28,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:28,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:28,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722539117] [2023-01-28 09:06:28,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722539117] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:28,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:28,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:06:28,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878627594] [2023-01-28 09:06:28,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:28,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:06:28,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:28,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:06:28,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:06:28,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:06:28,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 1073 transitions, 18068 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:28,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:28,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:06:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:47,077 INFO L130 PetriNetUnfolder]: 27875/52445 cut-off events. [2023-01-28 09:06:47,077 INFO L131 PetriNetUnfolder]: For 671717/671717 co-relation queries the response was YES. [2023-01-28 09:06:47,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318576 conditions, 52445 events. 27875/52445 cut-off events. For 671717/671717 co-relation queries the response was YES. Maximal size of possible extension queue 3518. Compared 543510 event pairs, 10474 based on Foata normal form. 1/52445 useless extension candidates. Maximal degree in co-relation 318466. Up to 28475 conditions per place. [2023-01-28 09:06:48,164 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1335 selfloop transitions, 268 changer transitions 7/1610 dead transitions. [2023-01-28 09:06:48,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1610 transitions, 28418 flow [2023-01-28 09:06:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:06:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:06:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3623 transitions. [2023-01-28 09:06:48,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37834168755221387 [2023-01-28 09:06:48,167 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3623 transitions. [2023-01-28 09:06:48,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3623 transitions. [2023-01-28 09:06:48,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:48,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3623 transitions. [2023-01-28 09:06:48,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.55555555555554) internal successors, (3623), 9 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:48,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:48,173 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:48,173 INFO L175 Difference]: Start difference. First operand has 272 places, 1073 transitions, 18068 flow. Second operand 9 states and 3623 transitions. [2023-01-28 09:06:48,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1610 transitions, 28418 flow [2023-01-28 09:07:06,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1610 transitions, 28065 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-01-28 09:07:06,233 INFO L231 Difference]: Finished difference. Result has 282 places, 1130 transitions, 19945 flow [2023-01-28 09:07:06,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17752, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19945, PETRI_PLACES=282, PETRI_TRANSITIONS=1130} [2023-01-28 09:07:06,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2023-01-28 09:07:06,234 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 1130 transitions, 19945 flow [2023-01-28 09:07:06,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:06,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:06,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:06,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 09:07:06,235 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:07:06,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1896731414, now seen corresponding path program 17 times [2023-01-28 09:07:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838763029] [2023-01-28 09:07:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:06,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:06,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:06,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838763029] [2023-01-28 09:07:06,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838763029] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:06,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:06,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 09:07:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124113732] [2023-01-28 09:07:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:06,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:07:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:07:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:07:06,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 1064 [2023-01-28 09:07:06,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1130 transitions, 19945 flow. Second operand has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:06,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:06,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 1064 [2023-01-28 09:07:06,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:28,407 INFO L130 PetriNetUnfolder]: 28076/52886 cut-off events. [2023-01-28 09:07:28,408 INFO L131 PetriNetUnfolder]: For 727779/727779 co-relation queries the response was YES. [2023-01-28 09:07:29,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325856 conditions, 52886 events. 28076/52886 cut-off events. For 727779/727779 co-relation queries the response was YES. Maximal size of possible extension queue 3569. Compared 549961 event pairs, 10597 based on Foata normal form. 1/52886 useless extension candidates. Maximal degree in co-relation 325741. Up to 28484 conditions per place. [2023-01-28 09:07:29,753 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 1279 selfloop transitions, 284 changer transitions 8/1571 dead transitions. [2023-01-28 09:07:29,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1571 transitions, 28576 flow [2023-01-28 09:07:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:07:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:07:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4233 transitions. [2023-01-28 09:07:29,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36167122351332875 [2023-01-28 09:07:29,757 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4233 transitions. [2023-01-28 09:07:29,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4233 transitions. [2023-01-28 09:07:29,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:29,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4233 transitions. [2023-01-28 09:07:29,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 384.8181818181818) internal successors, (4233), 11 states have internal predecessors, (4233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:29,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:29,764 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:29,764 INFO L175 Difference]: Start difference. First operand has 282 places, 1130 transitions, 19945 flow. Second operand 11 states and 4233 transitions. [2023-01-28 09:07:29,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1571 transitions, 28576 flow [2023-01-28 09:07:53,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1571 transitions, 28286 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-01-28 09:07:53,184 INFO L231 Difference]: Finished difference. Result has 295 places, 1208 transitions, 21795 flow [2023-01-28 09:07:53,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19685, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=864, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21795, PETRI_PLACES=295, PETRI_TRANSITIONS=1208} [2023-01-28 09:07:53,186 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2023-01-28 09:07:53,187 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1208 transitions, 21795 flow [2023-01-28 09:07:53,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 372.1818181818182) internal successors, (4094), 11 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:53,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:53,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:53,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 09:07:53,188 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:07:53,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 2 times [2023-01-28 09:07:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241566360] [2023-01-28 09:07:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:53,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:53,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241566360] [2023-01-28 09:07:53,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241566360] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:53,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:53,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:07:53,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860341250] [2023-01-28 09:07:53,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:53,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:07:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:07:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:07:53,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1064 [2023-01-28 09:07:53,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1208 transitions, 21795 flow. Second operand has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:53,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:53,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1064 [2023-01-28 09:07:53,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:17,005 INFO L130 PetriNetUnfolder]: 29540/54072 cut-off events. [2023-01-28 09:08:17,005 INFO L131 PetriNetUnfolder]: For 791159/791159 co-relation queries the response was YES. [2023-01-28 09:08:18,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340719 conditions, 54072 events. 29540/54072 cut-off events. For 791159/791159 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 544532 event pairs, 9515 based on Foata normal form. 622/54693 useless extension candidates. Maximal degree in co-relation 340598. Up to 29781 conditions per place. [2023-01-28 09:08:18,759 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 1526 selfloop transitions, 146 changer transitions 0/1672 dead transitions. [2023-01-28 09:08:18,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1672 transitions, 32781 flow [2023-01-28 09:08:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:08:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:08:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1343 transitions. [2023-01-28 09:08:18,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207393483709273 [2023-01-28 09:08:18,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1343 transitions. [2023-01-28 09:08:18,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1343 transitions. [2023-01-28 09:08:18,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:08:18,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1343 transitions. [2023-01-28 09:08:18,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:18,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:18,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:18,765 INFO L175 Difference]: Start difference. First operand has 295 places, 1208 transitions, 21795 flow. Second operand 3 states and 1343 transitions. [2023-01-28 09:08:18,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1672 transitions, 32781 flow [2023-01-28 09:08:38,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1672 transitions, 32373 flow, removed 74 selfloop flow, removed 3 redundant places. [2023-01-28 09:08:38,800 INFO L231 Difference]: Finished difference. Result has 295 places, 1220 transitions, 22459 flow [2023-01-28 09:08:38,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20509, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1015, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22459, PETRI_PLACES=295, PETRI_TRANSITIONS=1220} [2023-01-28 09:08:38,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2023-01-28 09:08:38,801 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1220 transitions, 22459 flow [2023-01-28 09:08:38,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:38,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:38,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:38,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 09:08:38,802 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:08:38,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:38,802 INFO L85 PathProgramCache]: Analyzing trace with hash -342469808, now seen corresponding path program 18 times [2023-01-28 09:08:38,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:38,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729542361] [2023-01-28 09:08:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:38,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:08:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729542361] [2023-01-28 09:08:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729542361] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:08:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:08:39,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:08:39,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021575235] [2023-01-28 09:08:39,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:08:39,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:08:39,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:39,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:08:39,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:08:39,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:08:39,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1220 transitions, 22459 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:39,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:39,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:08:39,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:59,011 INFO L130 PetriNetUnfolder]: 29540/54071 cut-off events. [2023-01-28 09:08:59,011 INFO L131 PetriNetUnfolder]: For 793426/793426 co-relation queries the response was YES. [2023-01-28 09:09:00,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345839 conditions, 54071 events. 29540/54071 cut-off events. For 793426/793426 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 544433 event pairs, 10963 based on Foata normal form. 1/54071 useless extension candidates. Maximal degree in co-relation 345718. Up to 30908 conditions per place. [2023-01-28 09:09:00,519 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1294 selfloop transitions, 273 changer transitions 7/1574 dead transitions. [2023-01-28 09:09:00,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1574 transitions, 30174 flow [2023-01-28 09:09:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:09:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:09:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3620 transitions. [2023-01-28 09:09:00,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780284043441938 [2023-01-28 09:09:00,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3620 transitions. [2023-01-28 09:09:00,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3620 transitions. [2023-01-28 09:09:00,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:00,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3620 transitions. [2023-01-28 09:09:00,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.22222222222223) internal successors, (3620), 9 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:00,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:00,529 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:00,529 INFO L175 Difference]: Start difference. First operand has 295 places, 1220 transitions, 22459 flow. Second operand 9 states and 3620 transitions. [2023-01-28 09:09:00,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1574 transitions, 30174 flow [2023-01-28 09:09:23,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1574 transitions, 29829 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-28 09:09:23,251 INFO L231 Difference]: Finished difference. Result has 304 places, 1235 transitions, 23219 flow [2023-01-28 09:09:23,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=22125, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23219, PETRI_PLACES=304, PETRI_TRANSITIONS=1235} [2023-01-28 09:09:23,252 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2023-01-28 09:09:23,252 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 1235 transitions, 23219 flow [2023-01-28 09:09:23,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:23,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:23,253 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:23,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 09:09:23,253 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:09:23,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash 144662842, now seen corresponding path program 19 times [2023-01-28 09:09:23,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:23,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079133415] [2023-01-28 09:09:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:23,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:09:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079133415] [2023-01-28 09:09:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079133415] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:09:23,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:09:23,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:09:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656422378] [2023-01-28 09:09:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:09:23,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:09:23,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:09:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:09:23,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:09:23,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1235 transitions, 23219 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:23,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:23,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:09:23,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:45,053 INFO L130 PetriNetUnfolder]: 29535/54169 cut-off events. [2023-01-28 09:09:45,053 INFO L131 PetriNetUnfolder]: For 805426/805426 co-relation queries the response was YES. [2023-01-28 09:09:46,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346476 conditions, 54169 events. 29535/54169 cut-off events. For 805426/805426 co-relation queries the response was YES. Maximal size of possible extension queue 3493. Compared 547397 event pairs, 11078 based on Foata normal form. 2/54170 useless extension candidates. Maximal degree in co-relation 346351. Up to 30910 conditions per place. [2023-01-28 09:09:46,545 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1296 selfloop transitions, 259 changer transitions 9/1564 dead transitions. [2023-01-28 09:09:46,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1564 transitions, 30492 flow [2023-01-28 09:09:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:09:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:09:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3629 transitions. [2023-01-28 09:09:46,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2023-01-28 09:09:46,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3629 transitions. [2023-01-28 09:09:46,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3629 transitions. [2023-01-28 09:09:46,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:46,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3629 transitions. [2023-01-28 09:09:46,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.22222222222223) internal successors, (3629), 9 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:46,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:46,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:46,554 INFO L175 Difference]: Start difference. First operand has 304 places, 1235 transitions, 23219 flow. Second operand 9 states and 3629 transitions. [2023-01-28 09:09:46,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1564 transitions, 30492 flow [2023-01-28 09:10:07,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1564 transitions, 30038 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 09:10:07,049 INFO L231 Difference]: Finished difference. Result has 311 places, 1251 transitions, 23931 flow [2023-01-28 09:10:07,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=22789, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=978, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23931, PETRI_PLACES=311, PETRI_TRANSITIONS=1251} [2023-01-28 09:10:07,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-01-28 09:10:07,052 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 1251 transitions, 23931 flow [2023-01-28 09:10:07,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:07,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:07,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:07,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 09:10:07,053 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:10:07,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash -841565252, now seen corresponding path program 20 times [2023-01-28 09:10:07,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:07,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966473397] [2023-01-28 09:10:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:07,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:10:07,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:07,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966473397] [2023-01-28 09:10:07,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966473397] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:07,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:07,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:10:07,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848038686] [2023-01-28 09:10:07,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:07,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:10:07,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:07,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:10:07,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:10:07,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:10:07,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 1251 transitions, 23931 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:07,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:07,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:10:07,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:30,056 INFO L130 PetriNetUnfolder]: 29525/54143 cut-off events. [2023-01-28 09:10:30,057 INFO L131 PetriNetUnfolder]: For 808235/808235 co-relation queries the response was YES. [2023-01-28 09:10:31,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347733 conditions, 54143 events. 29525/54143 cut-off events. For 808235/808235 co-relation queries the response was YES. Maximal size of possible extension queue 3491. Compared 546618 event pairs, 10881 based on Foata normal form. 2/54144 useless extension candidates. Maximal degree in co-relation 347605. Up to 30910 conditions per place. [2023-01-28 09:10:31,766 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1327 selfloop transitions, 257 changer transitions 8/1592 dead transitions. [2023-01-28 09:10:31,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1592 transitions, 31355 flow [2023-01-28 09:10:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:10:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:10:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3642 transitions. [2023-01-28 09:10:31,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38032581453634084 [2023-01-28 09:10:31,775 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3642 transitions. [2023-01-28 09:10:31,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3642 transitions. [2023-01-28 09:10:31,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:31,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3642 transitions. [2023-01-28 09:10:31,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 404.6666666666667) internal successors, (3642), 9 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:31,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:31,789 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:31,789 INFO L175 Difference]: Start difference. First operand has 311 places, 1251 transitions, 23931 flow. Second operand 9 states and 3642 transitions. [2023-01-28 09:10:31,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1592 transitions, 31355 flow [2023-01-28 09:10:58,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1592 transitions, 30931 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-01-28 09:10:58,797 INFO L231 Difference]: Finished difference. Result has 318 places, 1259 transitions, 24333 flow [2023-01-28 09:10:58,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=23537, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=994, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24333, PETRI_PLACES=318, PETRI_TRANSITIONS=1259} [2023-01-28 09:10:58,798 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2023-01-28 09:10:58,798 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 1259 transitions, 24333 flow [2023-01-28 09:10:58,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:58,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:58,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-28 09:10:58,799 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:10:58,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash 685727524, now seen corresponding path program 21 times [2023-01-28 09:10:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:58,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904321489] [2023-01-28 09:10:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:10:59,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:59,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904321489] [2023-01-28 09:10:59,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904321489] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:59,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:59,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:10:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284170010] [2023-01-28 09:10:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:59,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:10:59,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:10:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:10:59,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:10:59,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 1259 transitions, 24333 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:59,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:59,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:10:59,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:11:20,705 INFO L130 PetriNetUnfolder]: 29523/54125 cut-off events. [2023-01-28 09:11:20,705 INFO L131 PetriNetUnfolder]: For 818351/818351 co-relation queries the response was YES. [2023-01-28 09:11:22,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348132 conditions, 54125 events. 29523/54125 cut-off events. For 818351/818351 co-relation queries the response was YES. Maximal size of possible extension queue 3489. Compared 546426 event pairs, 10795 based on Foata normal form. 2/54126 useless extension candidates. Maximal degree in co-relation 348001. Up to 30910 conditions per place. [2023-01-28 09:11:22,696 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1337 selfloop transitions, 254 changer transitions 9/1600 dead transitions. [2023-01-28 09:11:22,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1600 transitions, 31955 flow [2023-01-28 09:11:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:11:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:11:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3629 transitions. [2023-01-28 09:11:22,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2023-01-28 09:11:22,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3629 transitions. [2023-01-28 09:11:22,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3629 transitions. [2023-01-28 09:11:22,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:11:22,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3629 transitions. [2023-01-28 09:11:22,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.22222222222223) internal successors, (3629), 9 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:22,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:22,710 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:22,710 INFO L175 Difference]: Start difference. First operand has 318 places, 1259 transitions, 24333 flow. Second operand 9 states and 3629 transitions. [2023-01-28 09:11:22,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1600 transitions, 31955 flow [2023-01-28 09:11:45,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1600 transitions, 31683 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-28 09:11:45,819 INFO L231 Difference]: Finished difference. Result has 326 places, 1273 transitions, 25131 flow [2023-01-28 09:11:45,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=24069, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1005, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25131, PETRI_PLACES=326, PETRI_TRANSITIONS=1273} [2023-01-28 09:11:45,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2023-01-28 09:11:45,820 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 1273 transitions, 25131 flow [2023-01-28 09:11:45,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:45,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:11:45,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:11:45,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-28 09:11:45,823 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:11:45,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:11:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1859402644, now seen corresponding path program 22 times [2023-01-28 09:11:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:11:45,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312067208] [2023-01-28 09:11:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:11:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:11:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:11:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:11:46,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:11:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312067208] [2023-01-28 09:11:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312067208] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:11:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:11:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:11:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541896564] [2023-01-28 09:11:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:11:46,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:11:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:11:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:11:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:11:46,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:11:46,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1273 transitions, 25131 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:46,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:11:46,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:11:46,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:12:06,679 INFO L130 PetriNetUnfolder]: 29513/54099 cut-off events. [2023-01-28 09:12:06,679 INFO L131 PetriNetUnfolder]: For 835155/835155 co-relation queries the response was YES. [2023-01-28 09:12:08,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349408 conditions, 54099 events. 29513/54099 cut-off events. For 835155/835155 co-relation queries the response was YES. Maximal size of possible extension queue 3463. Compared 545986 event pairs, 10701 based on Foata normal form. 2/54100 useless extension candidates. Maximal degree in co-relation 349274. Up to 30910 conditions per place. [2023-01-28 09:12:08,325 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1301 selfloop transitions, 277 changer transitions 7/1585 dead transitions. [2023-01-28 09:12:08,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1585 transitions, 31950 flow [2023-01-28 09:12:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:12:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:12:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-28 09:12:08,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-28 09:12:08,330 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-28 09:12:08,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-28 09:12:08,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:12:08,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-28 09:12:08,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:08,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:08,336 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:08,336 INFO L175 Difference]: Start difference. First operand has 326 places, 1273 transitions, 25131 flow. Second operand 9 states and 3631 transitions. [2023-01-28 09:12:08,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1585 transitions, 31950 flow [2023-01-28 09:12:32,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1585 transitions, 31398 flow, removed 44 selfloop flow, removed 6 redundant places. [2023-01-28 09:12:32,116 INFO L231 Difference]: Finished difference. Result has 330 places, 1275 transitions, 25283 flow [2023-01-28 09:12:32,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=24593, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25283, PETRI_PLACES=330, PETRI_TRANSITIONS=1275} [2023-01-28 09:12:32,116 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2023-01-28 09:12:32,116 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 1275 transitions, 25283 flow [2023-01-28 09:12:32,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:32,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:12:32,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:12:32,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-01-28 09:12:32,117 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:12:32,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:12:32,117 INFO L85 PathProgramCache]: Analyzing trace with hash 82747270, now seen corresponding path program 23 times [2023-01-28 09:12:32,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:12:32,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385037802] [2023-01-28 09:12:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:12:32,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:12:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:12:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:12:32,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:12:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385037802] [2023-01-28 09:12:32,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385037802] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:12:32,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:12:32,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:12:32,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425644031] [2023-01-28 09:12:32,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:12:32,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:12:32,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:12:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:12:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:12:32,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:12:32,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1275 transitions, 25283 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:32,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:12:32,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:12:32,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:12:54,194 INFO L130 PetriNetUnfolder]: 29507/54077 cut-off events. [2023-01-28 09:12:54,195 INFO L131 PetriNetUnfolder]: For 831026/831026 co-relation queries the response was YES. [2023-01-28 09:12:55,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349122 conditions, 54077 events. 29507/54077 cut-off events. For 831026/831026 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 545673 event pairs, 10813 based on Foata normal form. 2/54078 useless extension candidates. Maximal degree in co-relation 348986. Up to 30910 conditions per place. [2023-01-28 09:12:55,867 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1345 selfloop transitions, 252 changer transitions 8/1605 dead transitions. [2023-01-28 09:12:55,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1605 transitions, 32564 flow [2023-01-28 09:12:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:12:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:12:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-28 09:12:55,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-28 09:12:55,886 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-28 09:12:55,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-28 09:12:55,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:12:55,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-28 09:12:55,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:55,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:55,893 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:55,893 INFO L175 Difference]: Start difference. First operand has 330 places, 1275 transitions, 25283 flow. Second operand 9 states and 3631 transitions. [2023-01-28 09:12:55,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1605 transitions, 32564 flow [2023-01-28 09:13:16,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1605 transitions, 31926 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-01-28 09:13:16,855 INFO L231 Difference]: Finished difference. Result has 333 places, 1283 transitions, 25456 flow [2023-01-28 09:13:16,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=24655, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1023, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25456, PETRI_PLACES=333, PETRI_TRANSITIONS=1283} [2023-01-28 09:13:16,856 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2023-01-28 09:13:16,856 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 1283 transitions, 25456 flow [2023-01-28 09:13:16,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:16,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:13:16,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:13:16,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-01-28 09:13:16,857 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:13:16,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:13:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1737866682, now seen corresponding path program 24 times [2023-01-28 09:13:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:13:16,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940673596] [2023-01-28 09:13:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:13:16,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:13:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:13:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:13:17,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:13:17,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940673596] [2023-01-28 09:13:17,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940673596] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:13:17,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:13:17,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:13:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573867116] [2023-01-28 09:13:17,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:13:17,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:13:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:13:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:13:17,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:13:17,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:13:17,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1283 transitions, 25456 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:17,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:13:17,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:13:17,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:13:41,181 INFO L130 PetriNetUnfolder]: 29505/54059 cut-off events. [2023-01-28 09:13:41,182 INFO L131 PetriNetUnfolder]: For 831406/831406 co-relation queries the response was YES. [2023-01-28 09:13:42,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348943 conditions, 54059 events. 29505/54059 cut-off events. For 831406/831406 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 545438 event pairs, 10703 based on Foata normal form. 2/54060 useless extension candidates. Maximal degree in co-relation 348805. Up to 30910 conditions per place. [2023-01-28 09:13:43,034 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1316 selfloop transitions, 274 changer transitions 7/1597 dead transitions. [2023-01-28 09:13:43,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1597 transitions, 32410 flow [2023-01-28 09:13:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:13:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:13:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3634 transitions. [2023-01-28 09:13:43,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794903926482874 [2023-01-28 09:13:43,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3634 transitions. [2023-01-28 09:13:43,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3634 transitions. [2023-01-28 09:13:43,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:13:43,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3634 transitions. [2023-01-28 09:13:43,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.77777777777777) internal successors, (3634), 9 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:43,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:43,202 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:43,202 INFO L175 Difference]: Start difference. First operand has 333 places, 1283 transitions, 25456 flow. Second operand 9 states and 3634 transitions. [2023-01-28 09:13:43,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 1597 transitions, 32410 flow [2023-01-28 09:14:05,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 1597 transitions, 31936 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 09:14:05,255 INFO L231 Difference]: Finished difference. Result has 336 places, 1288 transitions, 25768 flow [2023-01-28 09:14:05,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=24990, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25768, PETRI_PLACES=336, PETRI_TRANSITIONS=1288} [2023-01-28 09:14:05,256 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2023-01-28 09:14:05,256 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 1288 transitions, 25768 flow [2023-01-28 09:14:05,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:05,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:14:05,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:14:05,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-28 09:14:05,257 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:14:05,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:14:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1295481114, now seen corresponding path program 25 times [2023-01-28 09:14:05,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:14:05,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796663660] [2023-01-28 09:14:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:14:05,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:14:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:14:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:14:05,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:14:05,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796663660] [2023-01-28 09:14:05,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796663660] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:14:05,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:14:05,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:14:05,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325871270] [2023-01-28 09:14:05,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:14:05,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:14:05,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:14:05,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:14:05,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:14:05,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:14:05,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 1288 transitions, 25768 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:05,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:14:05,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:14:05,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:14:26,423 INFO L130 PetriNetUnfolder]: 29499/54037 cut-off events. [2023-01-28 09:14:26,423 INFO L131 PetriNetUnfolder]: For 837924/837924 co-relation queries the response was YES. [2023-01-28 09:14:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349212 conditions, 54037 events. 29499/54037 cut-off events. For 837924/837924 co-relation queries the response was YES. Maximal size of possible extension queue 3481. Compared 544946 event pairs, 10707 based on Foata normal form. 2/54038 useless extension candidates. Maximal degree in co-relation 349073. Up to 30910 conditions per place. [2023-01-28 09:14:28,143 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1318 selfloop transitions, 269 changer transitions 8/1595 dead transitions. [2023-01-28 09:14:28,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1595 transitions, 32520 flow [2023-01-28 09:14:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:14:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:14:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3634 transitions. [2023-01-28 09:14:28,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794903926482874 [2023-01-28 09:14:28,146 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3634 transitions. [2023-01-28 09:14:28,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3634 transitions. [2023-01-28 09:14:28,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:14:28,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3634 transitions. [2023-01-28 09:14:28,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.77777777777777) internal successors, (3634), 9 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:28,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:28,152 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:28,152 INFO L175 Difference]: Start difference. First operand has 336 places, 1288 transitions, 25768 flow. Second operand 9 states and 3634 transitions. [2023-01-28 09:14:28,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1595 transitions, 32520 flow [2023-01-28 09:14:49,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1595 transitions, 32096 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 09:14:49,718 INFO L231 Difference]: Finished difference. Result has 337 places, 1286 transitions, 25814 flow [2023-01-28 09:14:49,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=25352, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1019, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25814, PETRI_PLACES=337, PETRI_TRANSITIONS=1286} [2023-01-28 09:14:49,719 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2023-01-28 09:14:49,719 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 1286 transitions, 25814 flow [2023-01-28 09:14:49,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:49,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:14:49,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:14:49,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-28 09:14:49,720 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:14:49,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:14:49,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1542995430, now seen corresponding path program 26 times [2023-01-28 09:14:49,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:14:49,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812202911] [2023-01-28 09:14:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:14:49,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:14:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:14:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:14:50,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:14:50,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812202911] [2023-01-28 09:14:50,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812202911] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:14:50,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:14:50,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:14:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821056780] [2023-01-28 09:14:50,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:14:50,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:14:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:14:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:14:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:14:50,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:14:50,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 1286 transitions, 25814 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:50,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:14:50,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:14:50,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-28 09:15:02,885 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:15:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:15:03,712 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:15:03,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-28 09:15:03,712 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 387/1064 universal loopers) in iteration 36,while PetriNetUnfolder was constructing finite prefix that currently has 244684 conditions, 35898 events (21535/35897 cut-off events. For 673943/673943 co-relation queries the response was YES. Maximal size of possible extension queue 3479. Compared 339390 event pairs, 8408 based on Foata normal form. 0/39003 useless extension candidates. Maximal degree in co-relation 244547. Up to 21227 conditions per place.). [2023-01-28 09:15:03,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:15:03,714 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:15:03,714 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:15:03,714 INFO L445 BasicCegarLoop]: Path program histogram: [26, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:03,716 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:15:03,716 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:15:03,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:15:03 BasicIcfg [2023-01-28 09:15:03,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:15:03,718 INFO L158 Benchmark]: Toolchain (without parser) took 790210.21ms. Allocated memory was 346.0MB in the beginning and 14.7GB in the end (delta: 14.4GB). Free memory was 311.0MB in the beginning and 9.5GB in the end (delta: -9.2GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2023-01-28 09:15:03,718 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 346.0MB. Free memory is still 295.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:15:03,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.52ms. Allocated memory is still 346.0MB. Free memory was 311.0MB in the beginning and 298.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 09:15:03,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.82ms. Allocated memory is still 346.0MB. Free memory was 298.3MB in the beginning and 294.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 09:15:03,719 INFO L158 Benchmark]: Boogie Preprocessor took 29.40ms. Allocated memory is still 346.0MB. Free memory was 294.9MB in the beginning and 292.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:15:03,719 INFO L158 Benchmark]: RCFGBuilder took 672.54ms. Allocated memory is still 346.0MB. Free memory was 292.4MB in the beginning and 257.1MB in the end (delta: 35.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-01-28 09:15:03,719 INFO L158 Benchmark]: TraceAbstraction took 789289.16ms. Allocated memory was 346.0MB in the beginning and 14.7GB in the end (delta: 14.4GB). Free memory was 256.7MB in the beginning and 9.5GB in the end (delta: -9.3GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-01-28 09:15:03,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 346.0MB. Free memory is still 295.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 171.52ms. Allocated memory is still 346.0MB. Free memory was 311.0MB in the beginning and 298.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.82ms. Allocated memory is still 346.0MB. Free memory was 298.3MB in the beginning and 294.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.40ms. Allocated memory is still 346.0MB. Free memory was 294.9MB in the beginning and 292.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 672.54ms. Allocated memory is still 346.0MB. Free memory was 292.4MB in the beginning and 257.1MB in the end (delta: 35.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 789289.16ms. Allocated memory was 346.0MB in the beginning and 14.7GB in the end (delta: 14.4GB). Free memory was 256.7MB in the beginning and 9.5GB in the end (delta: -9.3GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.2s, 457 PlacesBefore, 42 PlacesAfterwards, 488 TransitionsBefore, 42 TransitionsAfterwards, 17280 CoEnabledTransitionPairs, 11 FixpointIterations, 281 TrivialSequentialCompositions, 140 ConcurrentSequentialCompositions, 76 TrivialYvCompositions, 35 ConcurrentYvCompositions, 31 ChoiceCompositions, 563 TotalNumberOfCompositions, 21051 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17976, independent: 17711, independent conditional: 0, independent unconditional: 17711, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10069, independent: 10017, independent conditional: 0, independent unconditional: 10017, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17976, independent: 7694, independent conditional: 0, independent unconditional: 7694, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 10069, unknown conditional: 0, unknown unconditional: 10069] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 387/1064 universal loopers) in iteration 36,while PetriNetUnfolder was constructing finite prefix that currently has 244684 conditions, 35898 events (21535/35897 cut-off events. For 673943/673943 co-relation queries the response was YES. Maximal size of possible extension queue 3479. Compared 339390 event pairs, 8408 based on Foata normal form. 0/39003 useless extension candidates. Maximal degree in co-relation 244547. Up to 21227 conditions per place.). - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 387/1064 universal loopers) in iteration 36,while PetriNetUnfolder was constructing finite prefix that currently has 244684 conditions, 35898 events (21535/35897 cut-off events. For 673943/673943 co-relation queries the response was YES. Maximal size of possible extension queue 3479. Compared 339390 event pairs, 8408 based on Foata normal form. 0/39003 useless extension candidates. Maximal degree in co-relation 244547. Up to 21227 conditions per place.). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 387/1064 universal loopers) in iteration 36,while PetriNetUnfolder was constructing finite prefix that currently has 244684 conditions, 35898 events (21535/35897 cut-off events. For 673943/673943 co-relation queries the response was YES. Maximal size of possible extension queue 3479. Compared 339390 event pairs, 8408 based on Foata normal form. 0/39003 useless extension candidates. Maximal degree in co-relation 244547. Up to 21227 conditions per place.). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 387/1064 universal loopers) in iteration 36,while PetriNetUnfolder was constructing finite prefix that currently has 244684 conditions, 35898 events (21535/35897 cut-off events. For 673943/673943 co-relation queries the response was YES. Maximal size of possible extension queue 3479. Compared 339390 event pairs, 8408 based on Foata normal form. 0/39003 useless extension candidates. Maximal degree in co-relation 244547. Up to 21227 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 599 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 789.1s, OverallIterations: 36, TraceHistogramMax: 1, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 758.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4008 SdHoareTripleChecker+Valid, 11.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4008 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 9.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20489 IncrementalHoareTripleChecker+Invalid, 20564 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 0 mSDtfsCounter, 20489 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 559 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25814occurred in iteration=35, InterpolantAutomatonStates: 301, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 1255 NumberOfCodeBlocks, 1255 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1218 ConstructedInterpolants, 0 QuantifiedInterpolants, 11349 SizeOfPredicates, 2 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 37 InterpolantComputations, 36 PerfectInterpolantSequences, 186/187 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown